CN108445058A - Multiferroic liquid physics characteristic test device - Google Patents
Multiferroic liquid physics characteristic test device Download PDFInfo
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- CN108445058A CN108445058A CN201810186510.0A CN201810186510A CN108445058A CN 108445058 A CN108445058 A CN 108445058A CN 201810186510 A CN201810186510 A CN 201810186510A CN 108445058 A CN108445058 A CN 108445058A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a kind of multiferroic liquid physics characteristic test devices, including test container, the test container includes cricoid middle layer and is located at two electrodes of the middle layer both sides, two electrodes surround to form the sealing structure with accommodating cavity with middle layer, there is closed inlet opening and venthole, the inlet opening and venthole are connected to accommodating cavity in the middle layer；The middle layer uses insulating materials, and the electrode is sheet, and uses nonmagnetic transparent conductive material.Using multiferroic liquid physics characteristic test device provided by the invention, structure novel is ingenious in design, it is easy to accomplish, it can accurately measure magnetic performance, electric property, optical property and the multi-field coupling effects of multiferroic liquid.
Description
Technical field
The invention belongs to multiferroic fluent material technical field of performance test, and in particular to a kind of multiferroic liquid physics is special
System safety testing device.
Background technology
With the fast development of global IT application, the arrival in big data epoch, the information content constantly generated is in explosive increasing
It is long, stern challenge is proposed to the storage capacity (capacity and read or write speed) of data.Magnetic storage is currently the most important ones storage
How technology improves access speed since its storage speed that limits of " reading of magnetic write magnetic " principle and microelectronic technique has approached the limit
Degree is the major issue currently faced.Therefore, it researches and develops novel " read-write " technology and has become the important trend studied both at home and abroad.
In numerous read-write technologies, using " reading of the autotelegraph magnetic " technology of multi-ferroic material magnetoelectric effect due to the fast, work(with speed
Consuming the advantages that low, non-volatile is concerned.
The factors such as composition, electric/magnetic field by regulation and control magnetic core/ferroelectricity shell material can be with Effective Regulation magnetism/ferroelectricity
The variation of size, to increase magneto-electric coupled coefficient.Although realizing nucleocapsid magnetoelectricity by regulating and controlling magnetic/polarized variable quantity
The enhancing of coupling effect, but coupling (induction magnetic/polarization) mechanism of this structure determines that magnetic/polarization direction is difficult to change.If
Its magnetic/polarization direction can be regulated and controled by outfield, then can greatly improve magnetoelectric effect.
We have found under study for action：Magnetic particle in liquid can rotate with outer magnetic field direction, the direction of magnetization
Corresponding change occurs therewith.In addition, the ferroelectricity particle in liquid can generate movement and change its polarization under the action of an external electric field
Direction.Based on this, it is contemplated that the dispersion of iron ferromagnetic-ferroelectric nucleocapsid composite particles is formed into " multiferroic liquid " in a liquid,
The characteristics of capable of changing its magnetic/polarization direction under magnetic electric field effect using ferromagnetic-ferromagnetic fine particles in liquid, realize electric/magnetic field pair
The Effective Regulation of magnetic/polarization direction and obtain strong magnetoelectric effect.
In addition, can be used for storing data using the transformation of graininess in liquid, the big, at low cost " liquid of capacity is made
HDD hard disks ".For solid multi-iron material, multiferroic liquid has following features：1, multi-iron material has flowable
Property, form is amorphous；2, multiferroic particle due to having ferroelectricity and magnetism simultaneously, in electric field or magnetic fields
Under, it can rotate with the particle of multiferroic, and due in a liquid, so its coercive field can be smaller, due to cloth
Bright movement, the steering under electric field or magnetic field are easier.3, under electric field or magnetic fields, electricdomain takes in solid-state multi-iron material
To can only along certain orientations close to direction of an electric field, might not along direction of an electric field, and for ferroelectricity liquid,
Since ferromagnetic fine particles can be freely rotated in a liquid, the orientation of electricdomain can be completely along direction of an electric field.
Although multiferroic liquid has ferroelectricity, magnetism and mobility simultaneously, therefore perhaps can have many unique electricity
, magnetics, hydrodynamics, optics and acoustic characteristic, but since multiferroic liquid has the magnetic of solid multi-ferroic material simultaneously
Electrical property and the mobility with liquid.Therefore, the performance for measuring multiferroic liquid not only needs to measure electric property, also needs
Magnetic performance is measured, at the same time, it must also be considered that the mobility of liquid.It is thus impossible to indiscriminately imitate the measurement of ordinary solid material
Device.However, electrical property, magnetic property, optical property and the magnetoelectricity of multiferroic liquid can be tested currently without a kind of device
Coupling effect.Solving problem above becomes the task of top priority.
Invention content
In order to solve the above technical problems, the present invention provides a kind of multiferroic liquid physics characteristic test device, can survey
Obtain magnetic performance, electric property, optical property and the multi-field coupling effects of multiferroic liquid.
To achieve the above object, technical solution of the present invention is as follows：
A kind of multiferroic liquid physics characteristic test device, including test container, are characterized by：The test container packet
Cricoid middle layer and two electrodes for being located at the middle layer both sides are included, two electrodes surround to form tool with middle layer
There is the sealing structure of accommodating cavity, there is closed inlet opening and venthole, the inlet opening and venthole in the middle layer
It is connected to accommodating cavity；The middle layer uses insulating materials, and the electrode is sheet, and uses nonmagnetic electrically conducting transparent material
Material.
Using the above structure, multiferroic liquid to be measured is injected from inlet opening, the gas in accommodating cavity then can be from outlet
Hole is discharged, after being full of multiferroic liquid in accommodating cavity, you can stops injection multiferroic liquid, and blocks inlet opening and outlet
Then hole carries out magnetic performance, electric property, optical property and multi-field coupling effects by two electrodes to multiferroic liquid
Test.
As preferred：The inlet opening and venthole are respectively positioned on the same end of middle layer, and highly consistent.Using the above knot
Structure, to ensure to be completely filled with multiferroic liquid in accommodating cavity, and completely without gas, to ensure the accuracy of test result.
As preferred：The test container is configured with magnetic performance test suite, electrical performance testing component, optical property
Test suite and thermal property test suite；When needing to test electric light coupling effect, electrical performance testing component and optical
It can test suite startup；When needing to test magnetoelectric effect, magnetic performance test suite and electrical performance testing component open
It is dynamic；When needing to test magneto-optic coupling effect, magnetic performance test suite and optical performance test component start；When needing to test
When magnetoelectricity optical coupling effect, magnetic performance test suite, electrical performance testing component and optical performance test component start；When need
When testing magnetoelectricity photo-thermal coupling effect, magnetic performance test suite, electrical performance testing component, optical performance test component and
Thermal property test suite starts.Using the above structure, can by magnetic performance test suite, electrical performance testing component,
Optical performance test component and the thermal property test suite test electric light coupling effect of multiferroic liquid, magnetoelectric effect,
Magneto-optic coupling effect, magnetoelectricity optical coupling effect and magnetoelectricity photo-thermal coupling effect etc., have implemented the survey of multi-field coupling effects
Examination.
As preferred：The magnetic performance test suite includes two opposite magnetic poles of magnetism, and two magnetic poles are opposite
It is arranged in the outside of two electrodes.Using the above structure, simple and reliable, easy to implement and adjusting, with to more iron in accommodating cavity
Property liquid provide magnetic field, test multiferroic liquid magnetic performance.
As preferred：The electrical performance testing component includes power supply, and the anode of the power supply is electrically connected with one of electrode
It connects, cathode is electrically connected with another electrode.Using the above structure, simple and reliable, easy to implement and adjusting, in accommodating cavity
Multiferroic liquid provides electric field, tests the electric property of multiferroic liquid.
As preferred：The optical performance test component includes that light source and light intensity incude component, the light source and light intensity sense
Component is answered to be oppositely arranged on the outside of two electrodes.Simple and reliable using the above structure, easy to implement and adjusting is accommodating to measure
The light transmission of the multiferroic liquid of intracavitary.
As preferred：The thermal property test suite includes changing device, and the changing device is for changing in accommodating cavity
The temperature of liquid.Using the above structure, simple and reliable, easy to implement and adjusting, to measure the multiferroic liquid in accommodating cavity
Thermal property.
As preferred：Two electrodes are connected with dielectric analysis instrument respectively.Using the above structure, accommodating cavity can be measured
The dielectricity of interior multiferroic liquid.
As preferred：Configured with the alternating temperature mechanism for changing fluid temperature in accommodating cavity on the test container.Using
The above structure can measure the contact constant or dielectric loss variation with temperature curve of the multiferroic liquid in accommodating cavity.
As preferred：Two electrodes are connected with ferroelectricity analyzer respectively.Using the above structure, can measure measure it is accommodating
The ferroelectric hysteresis loop or leakage current density of the multiferroic liquid of intracavitary.
Compared with prior art, the beneficial effects of the invention are as follows：
Using multiferroic liquid physics characteristic test device provided by the invention, structure novel is ingenious in design, is easy to real
It is existing, it can accurately measure magnetic performance, electric property, optical property and the multi-field coupling effects of multiferroic liquid.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of test container；
Fig. 3 is the explosive view of Fig. 2；
Fig. 4 is the internal structure schematic diagram of Fig. 2；
Fig. 5 is the internal structure schematic diagram of test container another kind embodiment；
Fig. 6 is the hysteresis loop for applying the not nucleocapsid multiferroic liquid after same electric field prepared by us.
Specific implementation mode
The invention will be further described with attached drawing with reference to embodiments.
As shown in Figure 2 to 4, a kind of multiferroic liquid physics characteristic test device, including test container 1, the test
Container 1 includes cricoid middle layer 12 and is located at two electrodes 11 of 12 both sides of middle layer, two electrodes 11 with
Middle layer 12 surrounds to form the sealing structure with accommodating cavity 13, has 121 He of closed inlet opening in the middle layer 12
Venthole 122, the inlet opening 121 and venthole 122 are connected to accommodating cavity 13.Wherein, the cross section of middle layer 12 may be used also
With the closed shape such as rectangle, circle, ellipse, it is box-like knot that two electrodes 11 surround the sealing structure to be formed with middle layer 12
Structure.
Wherein, the electrode 11 is sheet, and uses nonmagnetic transparent conductive material, such as transparent conducting glass, excellent
Choosing is using ito glass (indium tin oxide transparent conductive semiconductor glass), the FTO electro-conductive glass (SnO of doping fluorine2Electrically conducting transparent
Glass) etc..The middle layer 12 uses insulating materials, it is preferred to use non-magnetic insulating cement, such as epoxy resin.
Also, electrode 11 is flake, and preferred thickness 0.5mm, width cannot be too wide, preferably in 1cm hereinafter, to reduce
Error when Magnetic Measurement.Likewise, the voltage that applies when electrically being measured to reduce, middle layer 12 can not empress dowager, preferably
Thickness is 0.5mm.
Further, Fig. 5 is referred to, when the electrode 11 is using electro-conductive glass, which includes glassy layer 11a and position
Conductive layer 11b on the inside of glassy layer 11a, such design must be contacted with multiferroic liquid because of conductive layer 11b, because
This, conductive layer 11b is located at glassy layer 11a close to 13 side of accommodating cavity.
Further, it is connect with conducting wire 14 for convenience of conductive layer 11b, at least side outer rim of the electrode 11 protrudes from centre
Layer 12 makes conductive layer 11b expose.
Fig. 4 is referred to, in order to ensure to be completely filled with multiferroic liquid in accommodating cavity, and completely without gas, it is ensured that test
As a result accuracy, the inlet opening 121 and venthole 122 are respectively positioned on the same end of middle layer 12, and highly consistent.Work as outlet
When hole 122 starts liquid, illustrate that the gas in accommodating cavity 13 has emptied.At this point, to ensure the closure of test container 1, need
Inlet opening 121 and venthole 122 are blocked.Both inlet opening 121 and venthole can be blocked with epoxy resin or glue
122, and plug 123 can be used to block inlet opening 121 and venthole 122.Wherein, survey is advantageous in that using the closure of plug 123
Examination container 1 can recycle, and greatly reduce testing cost.
Further, Fig. 2~Fig. 4 is referred to, conducting wire 14 is respectively connected on two electrodes 11, in order to subsequently carry out
Magnetic performance, electric property, optical property and multi-field coupling effects test.
Refer to Fig. 1, the test container 1 is configured with magnetic performance test suite, electrical performance testing component, optical
It can test suite and thermal property test suite.
Wherein, the thermal property test suite includes changing device 6, and the changing device 6 is for changing in accommodating cavity 13
The temperature of multiferroic liquid.The changing device 6 preferably using incubator is become, can also use other heating devices, as long as can
Change the temperature of multiferroic liquid in accommodating cavity 13.
The electrical performance testing component includes power supply 3,7 (not shown) of dielectric analysis instrument and the (figure of ferroelectricity analyzer 8
In be not shown), which generally uses HVPS (high voltage power supply), and the anode of power supply 3 is electrically connected with one of electrode 11, negative
Pole is electrically connected with another electrode 11.
When two electrodes 11 are connected with the positive and negative anodes of dielectric analysis instrument 7 respectively, so that it may to measure in accommodating cavity 13
The dielectricity of multiferroic liquid.Further, changed by alternating temperature mechanism (being shared as the same part with changing device 6) and held
Set the temperature of multiferroic liquid in chamber 13, so that it may to measure the dielectric constant or dielectric loss variation with temperature of multiferroic liquid
Curve.
When two electrodes 11 are connected with the positive and negative anodes of ferroelectricity analyzer 8 respectively, you can measure more in accommodating cavity 13
The ferroelectric hysteresis loop or leakage current density of iron liquid.
The magnetic performance test suite includes two opposite magnetic poles of magnetism 2, and two magnetic poles 2 are oppositely arranged on two
The outside of a electrode 11.The magnetic pole 2 in i.e. one 11 outside of electrode is the poles N, and the magnetic pole 2 in another 11 outside of electrode is the poles S.
The optical performance test component includes light source 4 and light intensity induction component 5, and the light source 4 and light intensity incude component 5
It is oppositely arranged on the outside of two electrodes 11.The light that light source 4 is sent out is received after container 1 after tested by light intensity induction component 5, energy
Enough light transmissions for accurately measuring multiferroic liquid in test container 1.
It should be pointed out that two magnetic poles 2 are between light source 4 and light intensity induction component 5, it is equal at the center of two magnetic poles 2
It is provided with through-hole 21, in order to which the light that light source 4 is sent out passes through.
When needing to test electric light coupling effect, electrical performance testing component and optical performance test component start, and give two
A electrode 11 even connects with the mains 3, so that it may to measure the light transmission of multiferroic liquid under electric field action, i.e. electric light coupling effect.
When needing to test magnetoelectric effect, magnetic performance test suite and electrical performance testing component start, and will survey
Examination container 1 is placed between two magnetic poles 2, is even connected with the mains 3 to two electrodes 11, just can not only be measured more iron under electric field action
The magnetism of property liquid, while the electric property of multiferroic liquid can also be measured, i.e. magnetoelectric effect.
When needing to test magneto-optic coupling effect, magnetic performance test suite and optical performance test component start, and will survey
Examination container 1 is placed between two magnetic poles 2 and light source 4 and light intensity induction component 5, can not only measure the magnetic of multiferroic liquid
Property, the optical property of multiferroic liquid, i.e. magneto-optic coupling effect can also be measured.
When needing to test magnetoelectricity optical coupling effect, magnetic performance test suite, electrical performance testing component and optical
Energy test suite starts, and test container 1 is placed between two magnetic poles 2 and light source 4 and light intensity induction component 5, also gives two
Electrode 11 even connects with the mains 3, can not only measure the magnetism of multiferroic liquid under electric field action, but also can measure multiferroic liquid
The electric property of body, additionally it is possible to measure the light transmission of multiferroic liquid, just obtain magnetoelectricity optical coupling effect.
It is magnetic performance test suite, electrical performance testing component, optical when needing to test magnetoelectricity photo-thermal coupling effect
Energy test suite and thermal property test suite start, and test container 1 is placed in two magnetic poles 2 and light source 4 and light intensity incudes
Between component 5, two electrodes 11 are also given even to connect with the mains 3, while passing through changing device 6 and changing multiferroic liquid in accommodating cavity 13
Temperature, can not only measure the magnetism of the multiferroic liquid under the electric field action of varying environment temperature, but also can measure
The electric property of the multiferroic liquid of varying environment temperature, additionally it is possible to light transmission of the measurement in the multiferroic liquid of varying environment temperature
Performance just obtains magnetoelectricity optical coupling effect.
Refer to Fig. 6, the nucleocapsid multiferroic liquid applied after not same electric field prepared by us (can also be other
Liquid, the magnetoelectricity composite fluid being simply mixed etc.) hysteresis loop, it is found that remanent magnetization, coercive field can pass through electricity
Field intensity is regulated and controled, and very strong magnetoelectric effect can be obtained, and superparamagnetism is presented in liquid when not applying electric field,
I.e. no remanent magnetism applies remanent magnetism and coercive field after electric field and all increases also without coercive field.
Finally, it should be noted that foregoing description is only the preferred embodiment of the present invention, the ordinary skill people of this field
Member under the inspiration of the present invention, without prejudice to the purpose of the present invention and the claims, can make table as multiple types
Show, such transformation is each fallen within protection scope of the present invention.
Claims (10)
1. a kind of multiferroic liquid physics characteristic test device, including test container (1), it is characterised in that：The test container
(1) include cricoid middle layer (12) and be located at two electrodes (11) of middle layer (12) both sides, two electrodes
(11) it surrounds to form the sealing structure with accommodating cavity (13) with middle layer (12), have on the middle layer (12) closed
Inlet opening (121) and venthole (122), the inlet opening (121) and venthole (122) are connected to accommodating cavity (13)；
The middle layer (12) uses insulating materials, and the electrode (11) is sheet, and uses nonmagnetic transparent conductive material.
2. multiferroic liquid physics characteristic test device according to claim 1, it is characterised in that：The inlet opening
(121) and venthole (122) is respectively positioned on the same ends of middle layer (12), and highly consistent.
3. multiferroic liquid physics characteristic test device according to claim 1 or 2, it is characterised in that：The test is held
Device (1) is configured with magnetic performance test suite, electrical performance testing component, optical performance test component and thermal property test group
Part；
When needing to test electric light coupling effect, electrical performance testing component and optical performance test component start；When needing to survey
When trying magnetoelectric effect, magnetic performance test suite and electrical performance testing component start；It is imitated when needing test magneto-optic coupling
At once, magnetic performance test suite and optical performance test component start；When needing to test magnetoelectricity optical coupling effect, magnetics
It can test suite, electrical performance testing component and the startup of optical performance test component；When need test magnetoelectricity photo-thermal coupling effect
When, magnetic performance test suite, electrical performance testing component, optical performance test component and thermal property test suite start.
4. multiferroic liquid physics characteristic test device according to claim 3, it is characterised in that：The magnetic performance is surveyed
It includes two opposite magnetic poles of magnetism (2) to try component, and two magnetic poles (2) are oppositely arranged on the outside of two electrodes (11).
5. multiferroic liquid physics characteristic test device according to claim 3, it is characterised in that：The electric property is surveyed
Examination component includes power supply (3), and the anode of the power supply (3) is electrically connected with one of electrode (11), cathode and another electrode
(11) it is electrically connected.
6. multiferroic liquid physics characteristic test device according to claim 3, it is characterised in that：The optical property is surveyed
Examination component includes light source (4) and light intensity induction component (5), and the light source (4) and light intensity induction component (5) are oppositely arranged on two
The outside of electrode (11).
7. multiferroic liquid physics characteristic test device according to claim 3, it is characterised in that：The thermal property is surveyed
Try component include changing device (6), the changing device (6) for changing accommodating cavity (13) interior liquid temperature.
8. multiferroic liquid physics characteristic test device according to claim 1 or 2, it is characterised in that：Two electricity
Pole (11) is connected with dielectric analysis instrument (7) respectively.
9. multiferroic liquid physics characteristic test device according to claim 8, it is characterised in that：The test container
(1) configured with the alternating temperature mechanism for changing accommodating cavity (13) interior fluid temperature on.
10. multiferroic liquid physics characteristic test device according to claim 1 or 2, it is characterised in that：Two electricity
Pole (11) is connected with ferroelectricity analyzer (8) respectively.
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| CN201810186510.0A CN108445058B (en) | 2018-03-07 | 2018-03-07 | Multiferroic liquid physical property testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264701A (en) * | 2021-12-28 | 2022-04-01 | 重庆科技学院 | Device and method for testing electrical property of material under multiple physical fields |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264701A (en) * | 2021-12-28 | 2022-04-01 | 重庆科技学院 | Device and method for testing electrical property of material under multiple physical fields |
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