CN102633495A - Preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic - Google Patents
Preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic Download PDFInfo
- Publication number
- CN102633495A CN102633495A CN2012101062129A CN201210106212A CN102633495A CN 102633495 A CN102633495 A CN 102633495A CN 2012101062129 A CN2012101062129 A CN 2012101062129A CN 201210106212 A CN201210106212 A CN 201210106212A CN 102633495 A CN102633495 A CN 102633495A
- Authority
- CN
- China
- Prior art keywords
- preparation
- thin slice
- room
- pottery
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 230000005294 ferromagnetic effect Effects 0.000 title claims abstract description 22
- 239000000919 ceramic Substances 0.000 title abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 19
- 238000000498 ball milling Methods 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims 2
- 239000012298 atmosphere Substances 0.000 abstract description 7
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 abstract 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 abstract 1
- 229910000018 strontium carbonate Inorganic materials 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Abstract
The invention discloses a preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic, wherein m is 10/9, n is 8/9 or m is 7/6 and n is 5/6. The preparation method comprises the following steps of: carrying out ball-milling, pre-sintering and ball-milling on mixture of powder by utilizing SrCO3, Fe2O3 and MoO3 powder, tabletting the obtained powder mixture which is uniformly mixed and then sintering the powder mixture under N2 atmosphere, wherein the sintering temperature is 1160 DEG C and the sintering time is 40 hours. Single-phase Sr2Fe10/9Mo8/9O6 and Sr2Fe7/6Mo5/6O6 ceramics with high qualities are obtained by adopting the preparation method disclosed by the invention. The ceramics have ferromagnetic curie temperature higher than the room temperature; and the required device and preparation process for preparation of the ceramics are simple without H2 atmosphere, and the preparation condition is easier.
Description
Technical field
The present invention relates to a kind of preparation method of pottery.
Background technology
Sr
2FeMoO
6Type double-perovskite oxide material has the ferromagnetic Curie temperature (T that is higher than room temperature (300K)
c～420K), higher spin polarizability and bigger magneto-resistor, therefore in much working in room temperature or above device, very important application prospect is arranged.While Sr
2FeMoO
6Sections magnetic double-perovskite oxide compound also is the various basic physical problems of research; Important materials like coexistence, coupling and competitive relation complicated between the spin in the strong correlation electron system, track, electric charge and the lattice degree of freedom; In these years, the research about ferromegnetism double-perovskite oxide material has obtained good development.But the preparation condition of sample is comparatively harsh, and high-quality pottery and film sample can only be at H
2Obtain under the atmosphere with conditions such as certain sintering temperature and sintering time under obtain, and these not only can cause cost and the increases of testing danger, also can reduce the repeatability of specimen preparation and character thereof, for example, the Sr of various different structures
2FeMoO
3Report is all arranged.
So, need a kind of new preparation method to address the above problem.
Summary of the invention
Goal of the invention: the objective of the invention is to prior art Sr
2FeMoO
6The preparation condition of type double-perovskite oxide material is harsh, and high-quality pottery and film sample can only be at H
2The defective that obtains under the atmosphere provides a kind of room-temperature ferromagnetic Sr
2Fe
mMo
nO
6The preparation method of pottery is to address the above problem.
Technical scheme: for realizing foregoing invention purpose, room-temperature ferromagnetic Sr of the present invention
2Fe
mMo
nO
6The preparation method of pottery can adopt following technical scheme:
A kind of room-temperature ferromagnetic Sr
2Fe
mMo
nO
6The preparation method of pottery, m=10/9 wherein, n=8/9 or m=7/6, n=5/6 may further comprise the steps:
(1), according to chemical formula Sr
2Fe
mMo
nO
6, weighing is through the SrCO of drying treatment
3, Fe
2O
3And MoO
3Powder;
(2), with SrCO
3, Fe
2O
3And MoO
3Powder is through ball-milling processing, pre-burning for the first time, ball-milling processing makes three kinds of powder even for the second time;
(3), the powdered mixture that mixes is pressed into thin slice;
(4), will the powdered mixture of step (2) gained put into crucible, put into the thin slice of step (3) gained again, and cover said thin slice with the powdered mixture of step (2) gained, said thin slice is embedded among the powdered mixture of step (2) gained;
The crucible that (5) thin slice will be housed is put into retort furnace, and feeds mobile N
2, be warmed up to 1160 ℃ of sintering temperatures, make thin slice 1160 ℃ of sintering 40 hours, obtain Sr
2Fe
mMo
nO
6Pottery.
Beneficial effect: compared with prior art, room-temperature ferromagnetic Sr of the present invention
2Fe
mMo
nO
6The preparation method of pottery is at N
2Can prepare high quality, monophasic Sr under the atmosphere
2Fe
10/9Mo
8/9O
6And Sr
2Fe
7/6Mo
5/6O
6Pottery, these potteries have the ferromagnetic Curie temperature that is higher than room temperature, and it is simple to prepare these potteries required equipment and preparation process, need not H
2Atmosphere, preparation condition is loose.
Description of drawings
Fig. 1 is the Sr that specific embodiment 1 prepares
2Fe
10/9Mo
8/9O
6The Sr for preparing with specific embodiment 2
2Fe
7/6Mo
5/6O
6The x ray diffraction spectra (XRD) of pottery;
Fig. 2 is the Sr that specific embodiment 1 prepares
2Fe
10/9Mo
8/9O
6The Sr for preparing with specific embodiment 2
2Fe
7/6Mo
5/6O
6The room temperature magnetic hysteresis loop of pottery;
Fig. 3 is the Sr that specific embodiment 1 prepares
2Fe
10/9Mo
8/9O
6The Sr that pottery and specific embodiment 2 prepare
2Fe
7/6Mo
5/6O
6The specific magnetising moment-the temperature curve of pottery.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Specific embodiment 1:
(1), according to chemical formula Sr
2Fe
10/9Mo
8/9O
6, weighing through the purity of drying treatment more than or equal to 99.0% SrCO
3, Fe
2O
3And MoO
3Powder adds alcohol in the mixture of three kinds of powder, ball-milling processing (320 rev/mins, 24 hours) makes powder even then;
(2), the powdered mixture of step (1) gained carried out drying treatment after, grinds with mortar and to make it evenly, and in 800 ℃, pre-burning is 5 hours in the air, and then grind with mortar and to make it even;
(3), in the powdered mixture of step (2) gained, add alcohol, ball-milling processing (320 rev/mins, 24 hours) makes it further to mix then, and drying treatment;
(4), the powdered mixture with step (3) gained of the pressure handle of 20MPa is pressed into thin slice.Thin slice is a rectangle, and length is 10mm ± 1mm, and width is 5mm ± 1mm, and the thickness of thin slice is 1mm ± 0.1mm, with the electronic transport character detection of convenient pottery;
(5), the powdered mixture of step (3) gained is put into crucible, put into thin slice again, and, thin slice is embedded among the powdered mixture of step (3) gained with the powdered mixture cover sheet of step (3) gained;
(6), crucible that thin slice will be housed is put into retort furnace, and is fed mobile N
2, temperature rise rate is controlled at 3 ℃/minute.In temperature-rise period, temperature is incubated 30 minutes in the time of 400 ℃, and then is warmed up to 1160 ℃ of sintering temperatures.Make thin slice 1160 ℃ of sintering 40 hours, obtain corresponding pottery.
Specific embodiment 2:
(1), according to chemical formula Sr
2Fe
7/6Mo
5/6O
6, weighing through drying treatment purity more than or equal to 99.0% SrCO
3, Fe
2O
3And MoO
3Powder adds alcohol in the mixture of three kinds of powder, ball-milling processing (320 rev/mins, 24 hours) makes powder even then;
(2), the powdered mixture of step (1) gained carried out drying treatment after, grinds with mortar and to make it evenly, and in 800 ℃, pre-burning is 5 hours in the air, and then grind with mortar and to make it even;
(3), in the powdered mixture of step (2) gained, add alcohol, ball-milling processing (320 rev/mins, 24 hours) makes it further to mix then, and drying treatment;
(4), the pressure with 20MPa is pressed into thin slice to the powdered mixture of step (3) gained.Thin slice is a rectangle, and length is 10mm ± 1mm, and width is 5mm ± 1mm, and the thickness of thin slice is 1mm ± 0.1mm, with the electronic transport character detection of convenient pottery;
(5), the powdered mixture of step (3) gained is put into crucible, put into thin slice again, and, thin slice is embedded among the powdered mixture of step (3) gained with the powdered mixture cover sheet of step (3) gained.
(6), crucible that thin slice will be housed is put into retort furnace, and is fed mobile N
2, temperature rise rate is controlled at 3 ℃/minute.In temperature-rise period, temperature is incubated 30 minutes, and then is warmed up to sintering temperature in the time of 400 ℃.Make thin slice 1160 ℃ of sintering 40 hours, obtain corresponding pottery.
Test result:
Fig. 1 is the Sr that specific embodiment 1 prepares
2Fe
10/9Mo
8/9O
6The Sr that pottery and specific embodiment 2 prepare
2Fe
7/6Mo
5/6O
6The x ray diffraction spectra (XRD) of pottery, it explains that the pottery for preparing under this condition is monophasic and do not have other dephasigns.
Fig. 2 is the Sr that specific embodiment 1 prepares
2Fe
10/9Mo
8/9O
6The Sr that pottery and specific embodiment 2 prepare
2Fe
7/6Mo
5/6O
6The room temperature magnetic hysteresis loop of pottery, Sr
2Fe
10/9Mo
8/9O
6The saturation magnetization and the residual magnetization of pottery are respectively 9.62emu/g and 0.12emu/g, and Sr
2Fe
7/6Mo
5/6O
6Saturation magnetization and residual magnetization be respectively 4.07emu/g and 0.04emu/g.Its magnetic reduces along with the increase of Fe/Mo ratio.This be since Fe/Mo than greater than after 1, the antiferromagnetic coupling between the adjacent Fe ion strengthens, thereby has reduced the macroscopic ferromegnetism.
Fig. 3 is the Sr that specific embodiment 1 prepares
2Fe
10/9Mo
8/9O
6The Sr that pottery and specific embodiment 2 prepare
2Fe
7/6Mo
5/6O
6The specific magnetising moment-the temperature curve of pottery, externally-applied magnetic field 200 oersteds during test.As can be seen from Figure 3, these ceramic ferromagnetic Curie temperatures are respectively 385K and 380K.
As stated, adopt Sr of the present invention
2Fe
mMo
nO
6The preparation method of pottery can be at N
2Prepare high quality, monophasic Sr under the atmosphere
2Fe
10/9Mo
8/9O
6Pottery and Sr
2Fe
7/6Mo
5/6O
6Pottery, these potteries have the ferromagnetic Curie temperature that is higher than room temperature, and it is simple to prepare these potteries required equipment and preparation process, need not H
2Atmosphere, preparation condition is loose.
Claims (10)
1. room-temperature ferromagnetic Sr
2Fe
mMo
nO
6The preparation method of pottery is characterized in that, m=10/9 wherein, and n=8/9 or m=7/6, n=5/6 may further comprise the steps:
(1), according to chemical formula Sr
2Fe
mMo
nO
6, weighing is through the SrCO of drying treatment
3, Fe
2O
3And MoO
3Powder;
(2), with SrCO
3, Fe
2O
3And MoO
3Powder is through ball-milling processing, pre-burning for the first time, ball-milling processing makes three kinds of powder even for the second time;
(3), the powdered mixture that mixes is pressed into thin slice;
(4), will the powdered mixture of step (2) gained put into crucible, put into the thin slice of step (3) gained again, and cover said thin slice with the powdered mixture of step (2) gained, said thin slice is embedded among the powdered mixture of step (2) gained;
The crucible that (5) thin slice will be housed is put into retort furnace, and feeds mobile N
2, be warmed up to 1160 ℃ of sintering temperatures, make thin slice 1160 ℃ of sintering 40 hours, obtain Sr
2Fe
mMo
nO
6Pottery.
2. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The preparation method of stupalith is characterized in that, the SrCO described in the step (1)
3, Fe
2O
3And MoO
3The purity of powder is more than or equal to 99.0%.
3. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The preparation method of pottery is characterized in that, the first time described in the step (2), ball-milling processing may further comprise the steps: in the mixture of three kinds of powder, add alcohol, make three kinds of powder even with ball-milling processing.
4. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The preparation method of pottery; It is characterized in that; Pre-burning may further comprise the steps described in the step (2): after the powdered mixture that the first time, ball-milling processing obtained is carried out drying treatment; Make it to mix with the mortar grinding, pre-burning is 5 hours in 800 ℃ air, and then makes it to mix with the mortar grinding.
5. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The preparation method of pottery is characterized in that, the second time described in the step (2), ball-milling processing may further comprise the steps: add alcohol in the powdered mixture that after pre-burning, obtains, ball-milling processing mixes powdered mixture then, and carries out drying treatment.
6. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The preparation method of pottery is characterized in that, thin slice described in the step (3) is the thin slice that the pressure with 20Mpa is pressed into the powdered mixture that mixes.
7. room-temperature ferromagnetic Sr as claimed in claim 3
2Fe
mMo
nO
6The preparation method of pottery is characterized in that, the first time described in the step (2), ball-milling processing was under 320 rev/mins condition, to handle 24 hours.
8. room-temperature ferromagnetic Sr as claimed in claim 4
2Fe
mMo
nO
6The preparation method of pottery is characterized in that, the second time described in the step (2), ball-milling processing was under 320 rev/mins condition, to handle 24 hours.
9. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The pottery the preparation method, it is characterized in that, in the step (5) from the room temperature to the sintering temperature 1160 ℃ temperature rise rate be controlled at 3 ℃/minute, in temperature-rise period, temperature is incubated 30 minutes in the time of 400 ℃, and then is warmed up to 1160 ℃ of sintering temperatures.
10. room-temperature ferromagnetic Sr as claimed in claim 1
2Fe
mMo
nO
6The preparation method of stupalith is characterized in that, the thin slice described in the step (4) is a rectangle, and the length of said thin slice is 10mm ± 1mm, and the width of said thin slice is 5mm ± 1mm, and the thickness of said thin slice is 1mm ± 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210106212.9A CN102633495B (en) | 2012-04-11 | 2012-04-11 | Preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210106212.9A CN102633495B (en) | 2012-04-11 | 2012-04-11 | Preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102633495A true CN102633495A (en) | 2012-08-15 |
| CN102633495B CN102633495B (en) | 2013-07-10 |
Family
ID=46618097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210106212.9A Expired - Fee Related CN102633495B (en) | 2012-04-11 | 2012-04-11 | Preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102633495B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193487A (en) * | 2013-04-22 | 2013-07-10 | 南京大学 | Method for quantitatively controlling B-position antiposition defect concentration of Sr2FeMoO6 ceramic |
| CN103342551A (en) * | 2013-06-28 | 2013-10-09 | 南京大学 | Preparation methods of room-temperature ferromagnetic Sr3FeCrMoO9 ceramic and film |
| CN104108924A (en) * | 2014-05-19 | 2014-10-22 | 华北水利水电大学 | Material having ferrimagnetism and preparation method thereof |
| CN107473742A (en) * | 2017-09-08 | 2017-12-15 | 河南师范大学 | A kind of single-phase double-perovskite Sr of high quality2FeMoO6The preparation method of ceramics |
| CN112331435A (en) * | 2020-10-09 | 2021-02-05 | 河南师范大学 | Sr2FeMoO6(1-x)-CoFe2O4(x) Method for regulating and controlling magneto-resistive switching behavior of composite material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257850A (en) * | 1999-11-30 | 2000-06-28 | 中国科学院固体物理研究所 | Process for preparing magnetic material of alkali-earth metal and iron and molybdenum oxides by sol-gel method |
| JP2009215145A (en) * | 2008-03-13 | 2009-09-24 | Murata Mfg Co Ltd | Ferromagnetic ceramic composition, magnetoresistive element composed using the same, and magnetic sensor |
| CN102074713A (en) * | 2010-12-17 | 2011-05-25 | 天津大学 | Anode material for solid oxide fuel cell, preparation method thereof and fuel cell |
| CN102351524A (en) * | 2011-06-22 | 2012-02-15 | 南京大学 | Preparation method for high purity single-phase Sr2FeMoO6 |
-
2012
- 2012-04-11 CN CN201210106212.9A patent/CN102633495B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257850A (en) * | 1999-11-30 | 2000-06-28 | 中国科学院固体物理研究所 | Process for preparing magnetic material of alkali-earth metal and iron and molybdenum oxides by sol-gel method |
| JP2009215145A (en) * | 2008-03-13 | 2009-09-24 | Murata Mfg Co Ltd | Ferromagnetic ceramic composition, magnetoresistive element composed using the same, and magnetic sensor |
| CN102074713A (en) * | 2010-12-17 | 2011-05-25 | 天津大学 | Anode material for solid oxide fuel cell, preparation method thereof and fuel cell |
| CN102351524A (en) * | 2011-06-22 | 2012-02-15 | 南京大学 | Preparation method for high purity single-phase Sr2FeMoO6 |
Non-Patent Citations (1)
| Title |
|---|
| 王凯等: "机械球磨对Sr2FeMoO6磁电阻性能的影响", 《哈尔滨工业大学学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193487A (en) * | 2013-04-22 | 2013-07-10 | 南京大学 | Method for quantitatively controlling B-position antiposition defect concentration of Sr2FeMoO6 ceramic |
| CN103342551A (en) * | 2013-06-28 | 2013-10-09 | 南京大学 | Preparation methods of room-temperature ferromagnetic Sr3FeCrMoO9 ceramic and film |
| CN104108924A (en) * | 2014-05-19 | 2014-10-22 | 华北水利水电大学 | Material having ferrimagnetism and preparation method thereof |
| CN107473742A (en) * | 2017-09-08 | 2017-12-15 | 河南师范大学 | A kind of single-phase double-perovskite Sr of high quality2FeMoO6The preparation method of ceramics |
| CN107473742B (en) * | 2017-09-08 | 2020-07-17 | 河南师范大学 | High-quality single-phase double perovskite Sr2FeMoO6Method for producing ceramic |
| CN112331435A (en) * | 2020-10-09 | 2021-02-05 | 河南师范大学 | Sr2FeMoO6(1-x)-CoFe2O4(x) Method for regulating and controlling magneto-resistive switching behavior of composite material |
| CN112331435B (en) * | 2020-10-09 | 2024-01-19 | 河南师范大学 | Sr 2 FeMoO 6 (1-x)-CoFe 2 O 4 (x) Method for regulating and controlling magnetic resistance conversion behavior of composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102633495B (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102633495B (en) | Preparation method of room-temperature ferromagnetic Sr2FemMonO6 ceramic | |
| Zhang et al. | Structural and magnetic properties in Bi1− xRxFeO3 (x= 0–1, R= La, Nd, Sm, Eu and Tb) polycrystalline ceramics | |
| TWI460320B (en) | Effective substitutions for rare earth metals in compositions and materials for electronic applications | |
| CN102875145B (en) | Layered perovskite structural ceramic and preparation method thereof | |
| Xu et al. | Densification and magnetic properties of NiCuZn low-sintering temperature ferrites with Bi2O3-Nb2O5 composite additives | |
| CN107417266A (en) | One kind is without rare earth garnet ferrite material and preparation method thereof | |
| CN101367645B (en) | Novel method for preparing ferrite ceramic soft magnetic material | |
| CN105884342A (en) | Preparation method for Bi-substituted LiZnTiMn gyromagnetic ferrite baseplate material | |
| CN102757235B (en) | Permanent magnetic strontium-ferrite material powder and preparation method thereof | |
| CN104973858A (en) | Sintered permanent magnetic ferrite material and preparation method thereof | |
| CN103911660B (en) | A kind of dilute magnetic semiconductor material and preparation method thereof | |
| Tsay et al. | Low temperature sintering of microwave magnetic garnet materials | |
| CN106542826B (en) | A kind of magnetism carbofrax material and preparation method thereof | |
| Kamani et al. | Studying the cold sintering process of zinc ferrite as an incongruent dissolution system | |
| CN105777097A (en) | Preparation method for improving purity and saturation magnetization of YIG target | |
| Sun et al. | Analysis of losses in NiO doped MnZn ferrites | |
| CN107473742B (en) | High-quality single-phase double perovskite Sr2FeMoO6Method for producing ceramic | |
| Peng et al. | Effect of La–Co substitution on the crystal structure and magnetic properties of hot press sintered Sr1− xLaxFe12− xCoxO19 (x= 0− 0.5) ferrites for use in LTCC technology | |
| CN103193476B (en) | Wet chemical method for preparing pure phase BiFeO3 ceramics | |
| Kaiser et al. | Mössbauer effect and dielectric behavior of NixCu0. 8− xZn0. 2Fe2O4 compound | |
| CN101723660A (en) | Method for preparing BiFeO3 based multiferroic composite material | |
| Li et al. | Microstructure and Raman spectroscopy analysis of LiNiZn ferrite ceramics sintered by spark plasma method | |
| Wang et al. | Structural and magnetic characterization of rhombohedral Ga1. 2Fe0. 8O3 ceramics prepared by high-pressure synthesis | |
| CN107993831B (en) | Method for inducing ferromagnetism by trace doping and compound prepared by method | |
| CN106810254A (en) | Double-perovskite Sr2MnWO6The synthetic method of ceramic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20140411 |