WO2004066386A1 - 電子素子、それを使用した集積電子素子及びそれを使用した動作方法 - Google Patents
電子素子、それを使用した集積電子素子及びそれを使用した動作方法 Download PDFInfo
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- WO2004066386A1 WO2004066386A1 PCT/JP2004/000569 JP2004000569W WO2004066386A1 WO 2004066386 A1 WO2004066386 A1 WO 2004066386A1 JP 2004000569 W JP2004000569 W JP 2004000569W WO 2004066386 A1 WO2004066386 A1 WO 2004066386A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/231—Multistable switching devices, e.g. memristors based on solid-state phase change, e.g. between amorphous and crystalline phases, Ovshinsky effect
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/253—Multistable switching devices, e.g. memristors having three or more terminals, e.g. transistor-like devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
Definitions
- the present invention relates to an electronic element and a recording method using the same, and particularly to a method for transmitting a current.
- It relates to a recording method.
- an image recording medium and a recording / reproducing apparatus using the same there are mainly a video tape, a digital versatile disk, and a hard disk.
- magnetic tapes, writable compact disks, and flash memories floating gate transistors
- Floppy disks, hard disks, digital versatile disks, writable compact disks, flash memories, and ferroelectric memories have been used to store data such as computers.
- Writable types of storage devices that retain their recorded contents even when the power is turned off can be classified according to their methods, such as magnetic recording devices, magneto-optical recording devices that scan or rotate the recording medium, and magnetic recording devices. It can be classified into a change recording device, and a semiconductor memory and a ferroelectric memory which are made into a matrix and do not require mechanical scanning and rotation.
- Japanese Unexamined Patent Publication No. Hei 6-28841 discloses the electric and chemical properties of atoms and molecules in an ion conductive material (electrolyte).
- a memory device using electrophoresis or electrochemical reaction is described.
- US Pat. No. 3,271,591 discloses a phase change memory using a phase change characteristic of chalcogenide depending on temperature. .
- U.S. Pat. No. 5,366,329 the principle of ion migration was misidentified as electromigration, or the phenomenon of metal ion precipitation in chalcogenide, which is an ion conductive substance, was mistakenly applied. Devices have also been devised.
- the electronic devices to which the electromigration based on the present invention is applied are the electronic devices disclosed in JP-A-08-295585 and JP-A-2001-26. There is an electronic device disclosed in Japanese Patent Application Publication No. 7513, and the former is poor in practicality, while the latter is considered to be practical.
- the type of recording / reproducing apparatus which requires scanning or rotation of the recording medium requires a mechanically movable part, and the reduction in size and weight has reached its limit. It is also vulnerable to mechanical impact, and the time it takes to move to the recording position on the medium greatly impairs the speed of writing and reading.
- Memory devices that use the electrochemical reaction of the electrolyte are slow to read and write because the ion-conductive material always has a response delay to high-frequency or short-time pulses (depending on the capacitance and charge storage time due to molecular polarization).
- materials that come into contact with chemically active ion conductive materials have a narrow selection range.
- noble metals or refractory metals must be used as electrode materials. Nevertheless, there is difficulty in long-term durability of the element.
- void generation time is about l X 10 0 if Estimate from 9 s
- the diffusion coefficient is about 10 times the diffusion coefficient of 200 ° C at 8 0 ° C
- void generation time is about 1 X 1 0 7 s.
- An object of the present invention is to provide an electronic device which has a large storage capacity higher than that of a magnetic recording device and a high read / write speed, is inexpensive to manufacture, and employs electromigration which is as compact as a semiconductor memory. With the goal.
- Another object of the present invention is to develop a material which enables a large storage capacity and a high read / write speed.
- Still another object of the present invention is to provide an integrated electronic device using an electronic device having the above characteristics and an operation method using the same.
- Japanese Patent Application Laid-Open No. 2001-267513 describes an In-Au alloy and a Sn-Ni alloy or a Sn (75 at.%)-Ni (25 at.%) Alloy. Examples of these alloys are those whose composition is not limited or whose composition is disclosed, cannot utilize the non-equilibrium state and metastable state in the solid phase of the present invention as described below.
- the invention disclosed in Japanese Patent Application Laid-Open No. 2001-26753 uses a non-equilibrium state or a metastable state in a solid phase. Concept does not exist.
- the electronic element according to the first invention of the present application is an electronic element having at least a storage core made of an alloy which is an electronic conductor and electrodes at both ends thereof, is a supersaturated solid solution before writing or at the time of recording and storage, and It is characterized in that this memory core is made of an alloy in which phase separation can occur.
- the electronic element according to the second invention of the present application is characterized in that this memory core is made of an alloy which is a phase-separated mixture before writing or during recording and storage, and which can form a solid solution when the temperature rises.
- the electronic element according to the third invention of the present application is characterized in that the memory core is made of an alloy that is a compound before writing or at the time of recording and storage, and that contains a component that can cause phase separation when the temperature rises.
- the electronic element according to the fourth invention of the present application is characterized in that the memory core is made of an alloy that is a phase-separated mixture before writing or during recording and storage, and that can generate a compound when the temperature rises.
- the electronic element according to the fifth invention of the present application is characterized in that the memory core is formed of an alloy which is an amorphous substance before writing or during recording and storage, and which can be crystallized when the temperature rises.
- the electronic element according to the sixth aspect of the present invention is characterized in that the memory core is composed of a compound that is a compound before writing or during recording and storage, and contains a component that can undergo a phase transition to another crystal phase having the same composition when the temperature rises.
- the electronic element according to the seventh aspect of the present invention is that the memory core is formed of an alloy which is a supersaturated solid solution or a phase-separated mixture before writing or during storage of a record, and which can undergo spinodal decomposition or solid solution as a reverse process when the temperature rises. It is characterized by
- the electronic device is an alloy which is a compound or a phase-separated mixture before writing or during storage of a record, and which can cause martensitic transformation when the temperature is increased.
- This storage core is characterized in that:
- the electronic element according to the ninth aspect of the present invention is composed of an alloy which is in a crystallographically stable state before writing or during recording storage, and which can be in a non-equilibrium state with a phase transition between solid phases at a temperature rise. It is characterized by doing.
- the electronic element according to the tenth aspect of the present invention is configured such that the memory core is made of an alloy which is in a crystallographic metastable state before writing or during recording storage, and which can be in a non-equilibrium state with a phase transition between solid phases when the temperature rises. It is characterized by doing.
- At least one of the electrodes connected to the storage core can be made of a semiconductor having a function of detecting a junction resistance.
- a third electrode directly connected to the storage core or a third electrode which is close to and insulated from the storage core for detecting junction resistance, resistance, potential, or capacitance can be provided.
- a chemical potential adjusting layer of at least 0.1 atomic layer or more is provided at an interface between the storage core and an electrode directly connected to the storage core.
- the composition of the alloy constituting the electronic element is biased, and recording is performed on the electronic element.
- the eleventh invention of the present application is directed to an eleventh aspect of the present invention, in which a plurality of the above-described electronic elements are arranged vertically and horizontally, an electrode connected to one of both ends of the storage core is a word line, and the remaining electrodes of the storage core are directly connected to the storage core.
- the electrode provided is at least a bit line, and by selecting a pad line and a bit line, a specific electronic element among a plurality of electronic elements arranged vertically and horizontally is accessed to perform writing and reading operations of the electronic element. It is an integrated electronic device.
- the method for operating an electronic element according to the present invention is a method for operating an electronic element having at least an alloy storage core as an electronic conductor and electrodes at both ends thereof.
- the storage core is made of a supersaturated solid solution alloy before writing or during recording and storage, and the temperature is changed so that the supersaturated solid solution is phase-separated during writing.
- the operation method of the electronic device according to the thirteenth invention of the present application is characterized in that the storage core is made of an alloy that is a phase-separated mixture before writing or during recording and storage, and the temperature is changed so that the phase-separated mixture becomes a solid solution during writing. It is characterized by.
- the method of operating an electronic device according to the fifteenth aspect of the present invention is characterized in that the storage core is made of an alloy containing a component that is a compound before writing or during recording and storage, and the temperature is changed so that the compound is phase-separated during writing.
- the method of operating an electronic device according to the fifteenth invention of the present application is characterized in that the storage core is formed of an alloy that is a phase-separated mixture before writing or during recording and storage, and the temperature is changed so that the phase-separated mixture is compounded during writing. It is characterized by.
- the method of operating an electronic device according to the sixteenth aspect of the present invention is characterized in that the storage core is formed of an alloy that is an amorphous substance before writing or during recording and storage, and the temperature is changed so that the amorphous substance is crystallized during writing.
- the memory core is formed of an alloy containing a component which is a compound before writing or during recording and storage, and the compound undergoes a phase transition to another crystal phase having the same composition during writing.
- the temperature is changed as follows.
- the operation method of the electronic device is characterized in that the storage core is formed of an alloy that is a supersaturated solid solution or a phase-separated mixture before writing or during recording and storage, and the supersaturated solid solution or the phase-separated mixture is spinodally decomposed during writing. Alternatively, it is characterized in that the temperature is changed so as to form a solid solution, which is a reverse process.
- the method of operating an electronic device according to the nineteenth aspect of the present invention comprises the step of: constructing the storage core with a compound or an alloy that is a phase-separated mixture before writing or during recording and storage. The method is characterized in that the temperature is changed so that the compound or the phase-separated mixture is transformed into martensite at the time of completion.
- the method of operating an electronic element according to the twenty-second invention of the present application is characterized in that the storage core is formed of an alloy which is in a crystallographically stable state before writing or during recording and storage, and the alloy is subjected to a non-solid phase transition between solid phases during writing. It is characterized in that the temperature is changed so as to be in an equilibrium state.
- the operation method of an electronic device is characterized in that the storage core is made of an alloy which is in a crystallographic metastable state before writing or during recording and storage, and the alloy undergoes a phase transition between solid phases during writing. It is characterized in that the temperature is changed so as to bring it into a non-equilibrium state.
- a current is applied to the electronic element to cause a bias in the composition of the alloy constituting the electronic element, thereby writing a record to the electronic element.
- a basic feature of the present invention is to apply an extremely high-speed electromigration in a non-equilibrium state during a phase transition from a stable state or a metastable state to operate an electronic element at a high speed to secure a stable writing or rewriting operation. It is to be.
- phase change memory which is a known technique, records the state itself
- the state of the material itself does not need to be stored, and the state of the storage material to be stored does not need to be two or more.
- the storage material may be a material that returns to the original state (phase) after operation.
- stable state refers to an extremely long-lived non-equilibrium state associated with a phase transition in thermodynamics. For example, a supercooled state (including a phase separation and a delay in compound formation), a supersaturated state (in a solid solution) (Including excessive solid solution) and amorphous state. These phenomena are caused by microscopic processing by thinning and microfabrication. The effect is caused by the effect of surface roughness or surface interface, the formation of alloy thin films such as co-evaporation, and rapid cooling. A long-life supercooled state or a supersaturated state obtained by quenching may be strictly classified as a non-equilibrium state, but is here called a metastable state.
- the non-equilibrium state here refers only to the non-equilibrium state that exists for a short time at the moment of general phase transition.
- phase separation from solid solution or supersaturated solid solution (2) solid solution formation from phase separation mixture, (3) phase separation from compound, and (4) phase separation from phase separation mixture.
- Compound formation (5) crystallization from the amorphous state, (6) phase transition with the same composition but different crystal structure, (7) spinodal decomposition, (8) martensitic transformation.
- the starting state of the phase transition (the state in which nothing is written in the storage element or the storage state)
- a metastable state due to rapid cooling and a size effect can be used.
- a metastable state may require a structure that is considered to maintain that state.
- phase separation starts just by contacting the electrode material, and segregation of the electrode occurs.
- hydrogen, halogen, oxygen or nitrogen It can be realized by chemisorbing atoms.
- the chemical potential adjustment layer at this interface must not function as an insulating film, but the insulating film can be used as a chemical potential adjustment layer at the interface as long as it is extremely thin and allows electrons to freely pass through tunnel conduction. .
- the amount of adsorbed atoms must be about 0.1 atomic layer or more, where all atomic bonds at the interface are defined as one atomic layer.
- the thickness of the insulating film through which electrons can freely pass through tunnel conduction must be about 2 nm or less.
- FIG. 1 is a conceptual binary phase diagram for explaining the electronic device of the present invention.
- FIG. 2 is a conceptual binary phase diagram for explaining the electronic device of the present invention.
- FIG. 3 is a cross-sectional view of a main part of an element for explaining a first embodiment of the electronic element of the present invention.
- FIG. 4 is a cross-sectional view of a main part of an element for describing a second embodiment of the electronic element of the present invention.
- FIG. 5 is a sectional view of a main part of an element for explaining a third embodiment of the electronic element of the present invention.
- FIG. 6 is a graph for explaining (a) the case where the electronic device of the present invention is operated near the solid solution limit and (b) the case where it is operated near the compound formation temperature.
- FIG. 7 is an Au-In binary diagram showing an embodiment of the present invention.
- FIG. 8 is an Au-Bi binary state diagram showing one embodiment of the present invention.
- FIG. 9 is an Au-P binary phase diagram showing one embodiment of the present invention.
- FIG. 10 is a Fe-C binary phase diagram showing one embodiment of the present invention.
- FIG. 11 is a (a) projected plan view, (b) a projected left side view, and (c) a projected right side view of a unit cell of an electronic element (storage device) showing an embodiment of the present invention.
- FIG. 1 is a binary phase diagram for explaining the concept of the present invention.
- the solid solution region 106 of B in A is Assume that the element B is represented by an atomic concentration of 101 and a temperature of 102.
- Reference numeral 110 denotes a liquid phase region
- 105 denotes a eutectic melting point
- 103 denotes a melting point of element A
- 104 denotes a melting point of element B.
- An alloy having a composition in the metastable solid solution region 107 at room temperature can be used as a supersaturated solid solution in which phase separation can occur when the temperature rises.
- an alloy with a composition in the A-B phase separated mixed phase 109 which is crystallographically stable, changes to a solid solution region 106 of B in A and a metastable solid solution region 107 when the temperature rises. What can be used can be used as an alloy in which solid solution can occur.
- a metastable solid solution region 108 in FIG. 1 may appear.
- the alloy in the metastable solid solution region 108 can be used in the same manner as described above.
- spinodal decomposition can also be used as described above.
- FIG. 2 is also a conceptual binary state diagram for explaining the present invention.
- the horizontal axis is the element
- the atomic concentration of D is 201
- the vertical axis is temperature 202.
- compound X205 exists at critical temperature Tc213 or higher as shown in Fig. 2.
- Tc213 critical temperature
- a metastable region 210 containing the compound X that has expanded below the critical temperature Tc213 may appear and expand to room temperature.
- This metastable compound X can be used as a compound in which phase separation can occur. Such an enlargement of the region may occur metastable even by the minute size effect.
- a rapid temperature change turns into a metastable amorphous phase 2 12 and crystallizes when the temperature rises.
- Alloys of a composition can be used as amorphous materials where crystallization can occur.
- the amorphous phase 2 12 may appear metastable due to simultaneous vapor deposition and minute size effect.
- the compound Y 20 when the solid solution region 208 of C in D exists, the compound Y 20 An alloy having a composition that changes its state to a solid solution region 208 of C in D when the temperature rises in a separated state of 6 and the simple substance D can be used as a phase separation mixture in which a solid solution can occur when the temperature rises.
- the compound Y 206 may have the same composition at the critical temperature T c 213 and have the same composition, but only the crystal phase may be changed to the compound Ya 214.
- Such a compound Y 206 is a compound that can undergo phase transition in the present invention.
- a special case of a similar phase transition is the martensitic transformation. Even in the martensitic transformation, which is widely known as quenching and annealing of iron, the moment of phase transition is such that the added atoms can move at high speed. In FIG.
- reference numeral 203 denotes a melting point of element C
- 204 denotes a melting point of element D
- 207 denotes a solid solution region of D in C
- 209 denotes an enlarged metastable solid solution. Indicates the area.
- the electronic device shown in FIG. 3 is also described in Japanese Patent Application Laid-Open No. 2000-265735, but it has a memory core 310 of the alloy of the present invention provided on an insulating substrate.
- This is a nonvolatile memory element composed of an electrode A302 and an electrode B303, which also serve as a sense electrode and is directly connected to one end thereof.
- the electrode A302 is made of a highly doped semiconductor.
- the diffused species atoms in the memory core 301 show a uniform distribution (uniformly distributed diffused species 304) without offset depending on the location (Fig. 3 (a)).
- the change in the Schottky barrier due to the segregation of the diffusion species is detected as a change in the junction resistance of the sense electrode (see Figs. 3 (b) and (c)).
- the interface between the semiconductor electrode A302 and the memory core 301 is formed by chemically adsorbing stable atoms at the interface of hydrogen, halogen, oxygen or nitrogen.
- a potential adjustment layer 309 can be provided.
- reference numeral 305 denotes a current flowing from the electrode A302 to the electrode B303
- reference numeral 307 denotes a current flowing from the electrode B to the electrode A
- reference numeral 306 denotes an electrode A.
- the diffusion species concentrated on the side, symbol 308 is the diffusion species concentrated on the electrode B side.
- FIG. 4 and FIG. 5 are also embodiments of the electronic element described in Japanese Patent Application Laid-Open No. 2000-265715.
- a sense electrode 404 or 504 serving as a third electrode is provided, and a change in a junction resistance or a potential potential difference is detected to perform recording and reading.
- the write operation is performed in the same manner as in the above example.
- the third electrode 404 is a direct junction type sense electrode
- the third electrode 504 is a sense electrode close to and insulated from the storage core.
- 401 and 501 are storage cores
- 400 and 502 are electrodes A
- 400 and 503 are electrodes B
- 400 and 50. 5 is a uniformly distributed species
- 406 and 506 are currents flowing from electrode A to electrode B
- 408 and 508 are currents flowing from electrode B to electrode A
- 407 and 507 are currents flowing from electrode B to electrode A.
- the diffusion species concentrated on the electrode A side, and 409 and 509 are the diffusion species concentrated on the electrode B side.
- the above embodiment can be formed of various materials irrespective of an inorganic material and an organic material.
- FIG. 6 (a) is a conceptual graph for explaining a case where the electronic device of the present invention is operated near the solid solution limit.
- Drawing the elapsed time of write operation 6001 on the horizontal axis and the current 602 and temperature 63 on the vertical axis the element temperature 604 exceeds the total solid solution temperature 606 at the very beginning of the write operation.
- An element current 605 is applied so as to generate Joule heat.
- the device current 605 is maintained so that the device temperature 604 generates Joule heat slightly lower than the total solid solution temperature 606. This By doing so, the impurities can be uniformly distributed by once forming a solid solution, and then the impurities can be promptly segregated to the desired electrode side by electromigration.
- Reference numeral 607 denotes room temperature.
- FIG. 6 (b) is a graph for explaining a case where the electronic device of the present invention is operated near a compound formation temperature.
- an element current 609 is applied for a very short time so that the element temperature 608 generates Joule heat exceeding the phase transition temperature 610 of the compound formation, and then the element current 600 Set 9 to 0. Thereafter, the device current 609 is maintained so that the device temperature 608 generates Joule heat slightly lower than the phase transition temperature 610.
- the impurities can be uniformly distributed by generating a compound, and thereafter, segregation of the impurities to the desired electrode side can be quickly caused by electromigration.
- Joule heat generated by the element current in the storage core is used, but a separate heat source may be provided near the element to control the temperature.
- a phase transition that can be caused by a combination of environmental changes such as pressure, electric field, magnetic field, electromagnetic wave, or light other than temperature has the same effect.
- FIG. 7 is an Au_In binary state diagram showing the first embodiment of the present invention.
- solid solution of Au in In cannot be detected.
- a metastable solid solution region 701 ie, a total solid solution region (maximum Au 20 atom%) appears. Alloy thin film of the composition of the metastable solid solution region 70 within 1 to scale the thickness Te cowpea is readily separated into I n 7 0 3 and I n 2 Au 7 0 2 by electromigration.
- a memory core is made of an Au 14 atomic% alloy thin film
- the state at the point 704 is raised to a temperature rise point 705 of 140 ° C by applying a current
- the moment I passes through the phase separation point 706 which is the boundary of the metastable solid solution region 701
- the I n 2 Au it can produce 7 0 2 segregation.
- This material may be segregation of I n 2 Au 7 0 2 by the magnitude of the current applied to the positive electrode side, can also be segregated in the negative electrode side, then when the once segregated undone Absent. Therefore, this material is useful as an element material that can be written only once.
- FIG. 8 is an Au—Bi binary phase diagram showing the second embodiment of the present invention.
- TBMassalski ed according to BINARY ALLOY PHASE DIAGRAMS 2nd ed. ( ASM, 1990)
- the compound Au 2 B 1 8 0 2 can not exist stably only at a temperature 1 1 6 ° C or more.
- 1 1 compound was expanded below 6 ° C Au 2 B i 8 0 2 nonequilibrium region 801 comprising to emergence. Alloy thin film of the temperature and composition of the non-equilibrium region 80 1, separated into Au 8 0 3 and B i 8 0 4 very quickly by elect port migration.
- FIG. 9 is an Au—Pt binary phase diagram showing the third embodiment of the present invention.
- Au and Pt phase separation mixed region 901 on the low temperature side, and on the high temperature side
- solid solution region 902 of Au and Pt there is a spinodal decomposition system with a spinodal line 903 at the boundary between them.
- FIG. 10 is a Fe-C binary phase diagram showing the fourth embodiment of the present invention.
- C is about 9 atoms. /.
- To C below has a F el 002 and F e 3 phase separated mixture area 1004 of C 1003, martensitic transformation occurs at their boundaries. It is known that the y Fe phase exists even at room temperature due to rapid cooling.
- This electronic device is an example of applying the Au 2 Bi alloy to the two-terminal device shown in FIG. 3, and can be manufactured as follows.
- an electrode A 1102 serving also as a P-doped amorphous Si sense electrode is formed on a polycarbonate insulating substrate 1101 by a sputtering method and a photolithographic process. I do.
- a memory core 1103 of Au—Bi alloy (Au: 66.7 atoms 0 /., Bi: 33.3 atom%) is formed by sputtering and photolithography.
- a protective insulating film 1104 made of a polymethyl methacrylate film is grown by a coating method, and a hole for a bit line 1106 to be connected to the electrode A 1102 is formed by a photolithographic process. And an etching step to form a Cu bit line 1106.
- the protective insulating film 1104 is grown again by the spin coating method, a hole for the electrode B1105 is formed by the photolithographic process, and the Cu electrode is formed by the sputtering method and the etching process. B and lead wire 1 107 are integrally formed.
- the entire surface is covered with a protective insulating film 1104 by spin coating.
- a storage device using the electronic elements of the present invention is realized. can do.
- the above-mentioned electronic element is repeatedly heated to a temperature of at least 116 ° C. by the Joule heat of the storage core 1103 itself by applying a predetermined current, and thereafter, segregates Bi to the desired electrode side. I can do it.
- the memory core 1103 In order for the memory core 1103 to reach a desired temperature by its own Joule heat, it is necessary to select and design peripheral materials in consideration of thermal diffusion.
- Industrial availability ADVANTAGE OF THE INVENTION According to this invention, it is an electronic device based on the principle which produces a bias in an alloy composition by electromigration, and the electronic device of a desired characteristic is obtained.
Abstract
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JP2005508120A JPWO2004066386A1 (ja) | 2003-01-23 | 2004-01-23 | 電子素子、それを使用した集積電子素子及びそれを使用した動作方法 |
US10/543,136 US7531823B2 (en) | 2003-01-23 | 2004-01-23 | Electron device, integrated electron device using same, and operating method using same |
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JP2003-015014 | 2003-01-23 | ||
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CN116936010A (zh) * | 2023-09-14 | 2023-10-24 | 江苏美特林科特殊合金股份有限公司 | 基于合金相图数据库的热力学参数影响分析方法 |
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US8878153B2 (en) * | 2009-12-08 | 2014-11-04 | Nec Corporation | Variable resistance element having gradient of diffusion coefficient of ion conducting layer |
KR20150091895A (ko) * | 2014-02-04 | 2015-08-12 | 에스케이하이닉스 주식회사 | 반도체 장치 및 그 동작방법 |
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JPH11510317A (ja) * | 1995-07-25 | 1999-09-07 | エナージー コンバーション デバイセス インコーポレイテッド | 電気的に消去可能で直接上書き可能な複数ビット単一セル記憶素子及びそれらで作製されるアレイ |
JP2001267513A (ja) * | 2000-03-21 | 2001-09-28 | Nec Corp | 電子素子およびそれを用いた記録方法 |
JP2002246561A (ja) * | 2001-02-19 | 2002-08-30 | Dainippon Printing Co Ltd | 記憶セル、この記録セルを用いたメモリマトリックス及びこれらの製造方法 |
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JPH0628841A (ja) | 1992-07-08 | 1994-02-04 | Makoto Yano | 化学反応を利用した記憶素子 |
US5825046A (en) | 1996-10-28 | 1998-10-20 | Energy Conversion Devices, Inc. | Composite memory material comprising a mixture of phase-change memory material and dielectric material |
US6087674A (en) | 1996-10-28 | 2000-07-11 | Energy Conversion Devices, Inc. | Memory element with memory material comprising phase-change material and dielectric material |
US20040124407A1 (en) * | 2000-02-11 | 2004-07-01 | Kozicki Michael N. | Scalable programmable structure, an array including the structure, and methods of forming the same |
US6709958B2 (en) * | 2001-08-30 | 2004-03-23 | Micron Technology, Inc. | Integrated circuit device and fabrication using metal-doped chalcogenide materials |
WO2003032392A2 (en) * | 2001-10-09 | 2003-04-17 | Axon Technologies Corporation | Programmable microelectronic device, structure, and system, and method of forming the same |
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JPH11510317A (ja) * | 1995-07-25 | 1999-09-07 | エナージー コンバーション デバイセス インコーポレイテッド | 電気的に消去可能で直接上書き可能な複数ビット単一セル記憶素子及びそれらで作製されるアレイ |
JP2001267513A (ja) * | 2000-03-21 | 2001-09-28 | Nec Corp | 電子素子およびそれを用いた記録方法 |
JP2002246561A (ja) * | 2001-02-19 | 2002-08-30 | Dainippon Printing Co Ltd | 記憶セル、この記録セルを用いたメモリマトリックス及びこれらの製造方法 |
Cited By (2)
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CN116936010A (zh) * | 2023-09-14 | 2023-10-24 | 江苏美特林科特殊合金股份有限公司 | 基于合金相图数据库的热力学参数影响分析方法 |
CN116936010B (zh) * | 2023-09-14 | 2023-12-01 | 江苏美特林科特殊合金股份有限公司 | 基于合金相图数据库的热力学参数影响分析方法 |
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US7531823B2 (en) | 2009-05-12 |
JPWO2004066386A1 (ja) | 2006-05-18 |
US20060139981A1 (en) | 2006-06-29 |
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