JPH0581533B2 - - Google Patents
Info
- Publication number
- JPH0581533B2 JPH0581533B2 JP63195888A JP19588888A JPH0581533B2 JP H0581533 B2 JPH0581533 B2 JP H0581533B2 JP 63195888 A JP63195888 A JP 63195888A JP 19588888 A JP19588888 A JP 19588888A JP H0581533 B2 JPH0581533 B2 JP H0581533B2
- Authority
- JP
- Japan
- Prior art keywords
- ferrite
- barium
- barium ferrite
- precursor
- ions
- 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.)
- Expired - Lifetime
Links
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 claims description 71
- 239000002243 precursor Substances 0.000 claims description 64
- 239000007864 aqueous solution Substances 0.000 claims description 26
- 239000000843 powder Substances 0.000 claims description 26
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 25
- 229910001626 barium chloride Inorganic materials 0.000 claims description 25
- 150000002500 ions Chemical class 0.000 claims description 24
- 150000003752 zinc compounds Chemical class 0.000 claims description 22
- NQNBVCBUOCNRFZ-UHFFFAOYSA-N nickel ferrite Chemical compound [Ni]=O.O=[Fe]O[Fe]=O NQNBVCBUOCNRFZ-UHFFFAOYSA-N 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 12
- 229910001422 barium ion Inorganic materials 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 5
- 239000012266 salt solution Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 22
- -1 barium halide Chemical class 0.000 description 21
- 230000005415 magnetization Effects 0.000 description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000010304 firing Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 229910052596 spinel Inorganic materials 0.000 description 9
- 239000011029 spinel Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000006467 substitution reaction Methods 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 229910052788 barium Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 5
- 229940007718 zinc hydroxide Drugs 0.000 description 5
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 150000002815 nickel Chemical class 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- QDZRBIRIPNZRSG-UHFFFAOYSA-N titanium nitrate Chemical compound [O-][N+](=O)O[Ti](O[N+]([O-])=O)(O[N+]([O-])=O)O[N+]([O-])=O QDZRBIRIPNZRSG-UHFFFAOYSA-N 0.000 description 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000011667 zinc carbonate Substances 0.000 description 2
- 235000004416 zinc carbonate Nutrition 0.000 description 2
- 229910000010 zinc carbonate Inorganic materials 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- PCHQDTOLHOFHHK-UHFFFAOYSA-L zinc;hydrogen carbonate Chemical compound [Zn+2].OC([O-])=O.OC([O-])=O PCHQDTOLHOFHHK-UHFFFAOYSA-L 0.000 description 2
- 229910021583 Cobalt(III) fluoride Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001552 barium Chemical class 0.000 description 1
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 1
- ISFLYIRWQDJPDR-UHFFFAOYSA-L barium chlorate Chemical compound [Ba+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O ISFLYIRWQDJPDR-UHFFFAOYSA-L 0.000 description 1
- OOULUYZFLXDWDQ-UHFFFAOYSA-L barium perchlorate Chemical compound [Ba+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O OOULUYZFLXDWDQ-UHFFFAOYSA-L 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- BSUSEPIPTZNHMN-UHFFFAOYSA-L cobalt(2+);diperchlorate Chemical compound [Co+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O BSUSEPIPTZNHMN-UHFFFAOYSA-L 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- IQYVXTLKMOTJKI-UHFFFAOYSA-L cobalt(ii) chlorate Chemical compound [Co+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O IQYVXTLKMOTJKI-UHFFFAOYSA-L 0.000 description 1
- YCYBZKSMUPTWEE-UHFFFAOYSA-L cobalt(ii) fluoride Chemical compound F[Co]F YCYBZKSMUPTWEE-UHFFFAOYSA-L 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 description 1
- JRSGPUNYCADJCW-UHFFFAOYSA-K iron(3+);trichlorate Chemical compound [Fe+3].[O-]Cl(=O)=O.[O-]Cl(=O)=O.[O-]Cl(=O)=O JRSGPUNYCADJCW-UHFFFAOYSA-K 0.000 description 1
- LHOWRPZTCLUDOI-UHFFFAOYSA-K iron(3+);triperchlorate Chemical compound [Fe+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O LHOWRPZTCLUDOI-UHFFFAOYSA-K 0.000 description 1
- SHXXPRJOPFJRHA-UHFFFAOYSA-K iron(iii) fluoride Chemical compound F[Fe](F)F SHXXPRJOPFJRHA-UHFFFAOYSA-K 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229940078494 nickel acetate Drugs 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- RZLUIDROFNIMHF-UHFFFAOYSA-L nickel(2+);dichlorate Chemical compound [Ni+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O RZLUIDROFNIMHF-UHFFFAOYSA-L 0.000 description 1
- ZLQBNKOPBDZKDP-UHFFFAOYSA-L nickel(2+);diperchlorate Chemical compound [Ni+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O ZLQBNKOPBDZKDP-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
- XROWMBWRMNHXMF-UHFFFAOYSA-J titanium tetrafluoride Chemical compound [F-].[F-].[F-].[F-].[Ti+4] XROWMBWRMNHXMF-UHFFFAOYSA-J 0.000 description 1
- SOCDLWOJPVKBHF-UHFFFAOYSA-J titanium(4+) tetraperchlorate Chemical compound [Ti+4].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O SOCDLWOJPVKBHF-UHFFFAOYSA-J 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical group O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/80—Compounds containing cobalt, with or without oxygen or hydrogen, and containing one or more other elements
- C01G51/82—Compounds containing cobalt, with or without oxygen or hydrogen, and containing two or more other elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70678—Ferrites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/30—Three-dimensional structures
- C01P2002/32—Three-dimensional structures spinel-type (AB2O4)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/32—Thermal properties
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63195888A JPH0247209A (ja) | 1988-08-04 | 1988-08-04 | æ¿ç¶ããªãŠã ããšã©ã€ã埮ç²æ«ã®è£œé æ¹æ³ |
| DE3925374A DE3925374A1 (de) | 1988-08-04 | 1989-07-29 | Verfahren zur herstellung mikrokristalliner co/ti-substituierter bariumferrit-plaettchen |
| US07/387,965 US4960582A (en) | 1988-08-04 | 1989-08-01 | Process for producing microcrystalline Co/Ti-substituted barium ferrite platelets |
| KR1019890011227A KR960002626B1 (ko) | 1988-08-04 | 1989-08-04 | íì ë°ë¥šíëŒìŽíž 믞ë¶ë§ì ì ì¡°ë°©ë² |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63195888A JPH0247209A (ja) | 1988-08-04 | 1988-08-04 | æ¿ç¶ããªãŠã ããšã©ã€ã埮ç²æ«ã®è£œé æ¹æ³ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0247209A JPH0247209A (ja) | 1990-02-16 |
| JPH0581533B2 true JPH0581533B2 (ja) | 1993-11-15 |
Family
ID=16348654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63195888A Granted JPH0247209A (ja) | 1988-08-04 | 1988-08-04 | æ¿ç¶ããªãŠã ããšã©ã€ã埮ç²æ«ã®è£œé æ¹æ³ |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4960582A (ja) |
| JP (1) | JPH0247209A (ja) |
| KR (1) | KR960002626B1 (ja) |
| DE (1) | DE3925374A1 (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042626C (zh) * | 1995-07-06 | 1999-03-24 | å京çå·¥å€§åŠ | è¶ ç»å è§æ¶ç³»éæ°§äœçå¶å€æ¹æ³ |
| ES2164528B1 (es) * | 1999-04-27 | 2003-10-16 | Univ Barcelona Autonoma | Procedimiento para aumentar la coercitividad de un material ferromagnetico. |
| US7091412B2 (en) | 2002-03-04 | 2006-08-15 | Nanoset, Llc | Magnetically shielded assembly |
| US7162302B2 (en) | 2002-03-04 | 2007-01-09 | Nanoset Llc | Magnetically shielded assembly |
| CN104308173B (zh) * | 2014-09-25 | 2016-09-07 | äžåœäººæ°å€§åŠ | äžç§å¶å€é¶ä»·çº³ç±³éé¢ç²çæ¹æ³ |
| CN115180934B (zh) * | 2022-07-19 | 2023-01-06 | æµæ±å€§åŠ | äžç§å ·æå€å埮ç»æä»çµå¯è°ååæºæé¡éæ°§äœèèåå ¶å¶å€æ¹æ³ |
| CN119954505B (zh) * | 2025-02-08 | 2025-10-21 | äžåœç§åŠé¢è¿çšå·¥çšç 究æ | äžç§æ¹åçé¢æ¶Šæ¹¿æ§çéæºæéé žéé¶ç·äœåå ¶å¶å€æ¹æ³äžåºçš |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2904491A1 (de) * | 1979-02-07 | 1980-08-21 | Bayer Ag | Plaettchenfoermige eisenoxidpigmente und verfahren zu deren herstellung sowie deren verwendung |
| US4865834A (en) * | 1987-02-16 | 1989-09-12 | Toda Kogyo Corp. | Process for producing plate-like magnetite particles and plate-like maghemite particles |
-
1988
- 1988-08-04 JP JP63195888A patent/JPH0247209A/ja active Granted
-
1989
- 1989-07-29 DE DE3925374A patent/DE3925374A1/de not_active Withdrawn
- 1989-08-01 US US07/387,965 patent/US4960582A/en not_active Expired - Fee Related
- 1989-08-04 KR KR1019890011227A patent/KR960002626B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR960002626B1 (ko) | 1996-02-24 |
| JPH0247209A (ja) | 1990-02-16 |
| KR900003070A (ko) | 1990-03-23 |
| DE3925374A1 (de) | 1990-02-08 |
| US4960582A (en) | 1990-10-02 |
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