CA1310416C - Magnetooptical recording medium - Google Patents
Magnetooptical recording mediumInfo
- Publication number
- CA1310416C CA1310416C CA000580362A CA580362A CA1310416C CA 1310416 C CA1310416 C CA 1310416C CA 000580362 A CA000580362 A CA 000580362A CA 580362 A CA580362 A CA 580362A CA 1310416 C CA1310416 C CA 1310416C
- Authority
- CA
- Canada
- Prior art keywords
- magnetooptical recording
- film
- atom
- recording medium
- magnetooptical
- 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
- 239000010408 film Substances 0.000 claims abstract description 259
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 239000000956 alloy Substances 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 26
- 230000007797 corrosion Effects 0.000 claims abstract description 24
- 238000005260 corrosion Methods 0.000 claims abstract description 24
- 150000003624 transition metals Chemical class 0.000 claims abstract description 24
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 18
- 230000005415 magnetization Effects 0.000 claims abstract description 10
- 239000010409 thin film Substances 0.000 claims abstract description 10
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 7
- 125000004429 atom Chemical group 0.000 claims description 132
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 32
- 229910052742 iron Inorganic materials 0.000 claims description 24
- 229910052697 platinum Inorganic materials 0.000 claims description 24
- 229910052763 palladium Inorganic materials 0.000 claims description 22
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 21
- 239000005977 Ethylene Substances 0.000 claims description 21
- 239000011651 chromium Substances 0.000 claims description 20
- 230000002708 enhancing effect Effects 0.000 claims description 18
- 150000001925 cycloalkenes Chemical class 0.000 claims description 17
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 9
- 229910052771 Terbium Inorganic materials 0.000 claims description 9
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229920005604 random copolymer Polymers 0.000 claims description 8
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052779 Neodymium Inorganic materials 0.000 claims description 7
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- 229910004205 SiNX Inorganic materials 0.000 claims description 7
- 229910052689 Holmium Inorganic materials 0.000 claims description 6
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 6
- XBFJAVXCNXDMBH-UHFFFAOYSA-N tetracyclo[6.2.1.1(3,6).0(2,7)]dodec-4-ene Chemical compound C1C(C23)C=CC1C3C1CC2CC1 XBFJAVXCNXDMBH-UHFFFAOYSA-N 0.000 claims description 6
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 5
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 5
- 229910052772 Samarium Inorganic materials 0.000 claims description 5
- 125000005843 halogen group Chemical group 0.000 claims description 5
- 150000002430 hydrocarbons Chemical group 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910019589 Cr—Fe Inorganic materials 0.000 claims description 2
- 229910052691 Erbium Inorganic materials 0.000 claims description 2
- 229910018054 Ni-Cu Inorganic materials 0.000 claims description 2
- 229910018481 Ni—Cu Inorganic materials 0.000 claims description 2
- 229910052775 Thulium Inorganic materials 0.000 claims description 2
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 2
- 238000005275 alloying Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 2
- 229910052693 Europium Inorganic materials 0.000 claims 2
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims 2
- 229910017060 Fe Cr Inorganic materials 0.000 claims 1
- 229910002544 Fe-Cr Inorganic materials 0.000 claims 1
- 229910018098 Ni-Si Inorganic materials 0.000 claims 1
- 229910018529 Ni—Si Inorganic materials 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 229920000620 organic polymer Polymers 0.000 claims 1
- 229910052702 rhenium Inorganic materials 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 22
- 238000007254 oxidation reaction Methods 0.000 abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 42
- 229920001577 copolymer Polymers 0.000 description 34
- 239000010410 layer Substances 0.000 description 30
- 230000008859 change Effects 0.000 description 23
- 239000000203 mixture Substances 0.000 description 22
- 239000010936 titanium Substances 0.000 description 12
- OTTZHAVKAVGASB-UHFFFAOYSA-N 2-heptene Natural products CCCCC=CC OTTZHAVKAVGASB-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 230000007704 transition Effects 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004544 sputter deposition Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1-dodecene Chemical compound CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 4
- GQEZCXVZFLOKMC-UHFFFAOYSA-N 1-hexadecene Chemical compound CCCCCCCCCCCCCCC=C GQEZCXVZFLOKMC-UHFFFAOYSA-N 0.000 description 4
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- HFDVRLIODXPAHB-UHFFFAOYSA-N 1-tetradecene Chemical compound CCCCCCCCCCCCC=C HFDVRLIODXPAHB-UHFFFAOYSA-N 0.000 description 4
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 4
- 229910017061 Fe Co Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- WLTSXAIICPDFKI-FNORWQNLSA-N (E)-3-dodecene Chemical compound CCCCCCCC\C=C\CC WLTSXAIICPDFKI-FNORWQNLSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229940069096 dodecene Drugs 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 238000010301 surface-oxidation reaction Methods 0.000 description 3
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910002837 PtCo Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical class C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 230000005381 magnetic domain Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- CCCMONHAUSKTEQ-UHFFFAOYSA-N octadec-1-ene Chemical compound CCCCCCCCCCCCCCCCC=C CCCMONHAUSKTEQ-UHFFFAOYSA-N 0.000 description 2
- -1 poly(4-methyl-1-pentene) Polymers 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- GVRWIAHBVAYKIZ-FNORWQNLSA-N (e)-dec-3-ene Chemical compound CCCCCC\C=C\CC GVRWIAHBVAYKIZ-FNORWQNLSA-N 0.000 description 1
- BNGUZDGWNATSIB-VQHVLOKHSA-N (e)-heptadec-4-ene Chemical compound CCCCCCCCCCCC\C=C\CCC BNGUZDGWNATSIB-VQHVLOKHSA-N 0.000 description 1
- IYDCZCBVYAESDR-VQHVLOKHSA-N (e)-pentadec-4-ene Chemical compound CCCCCCCCCC\C=C\CCC IYDCZCBVYAESDR-VQHVLOKHSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000005698 Diels-Alder reaction Methods 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910005091 Si3N Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- QHAKCXNTAVONCS-UHFFFAOYSA-N docos-5-ene Chemical compound CCCCCCCCCCCCCCCCC=CCCCC QHAKCXNTAVONCS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910052699 polonium Inorganic materials 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910021484 silicon-nickel alloy Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 229910052713 technetium Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33555487A JPH01179241A (ja) | 1987-12-28 | 1987-12-28 | 光磁気記録媒体 |
| JP335554/1987 | 1987-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1310416C true CA1310416C (en) | 1992-11-17 |
Family
ID=18289880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000580362A Expired - Lifetime CA1310416C (en) | 1987-12-28 | 1988-10-17 | Magnetooptical recording medium |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH01179241A (zh) |
| CN (1) | CN1019241B (zh) |
| CA (1) | CA1310416C (zh) |
| MY (1) | MY103623A (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5810588B2 (ja) * | 2011-03-31 | 2015-11-11 | Ｄｏｗａサーモテック株式会社 | 浸炭雰囲気炉用熱反射板及び浸炭処理方法 |
-
1987
- 1987-12-28 JP JP33555487A patent/JPH01179241A/ja active Pending
-
1988
- 1988-10-17 CN CN 88107242 patent/CN1019241B/zh not_active Expired
- 1988-10-17 MY MYPI88001169A patent/MY103623A/en unknown
- 1988-10-17 CA CA000580362A patent/CA1310416C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| MY103623A (en) | 1993-08-28 |
| CN1019241B (zh) | 1992-11-25 |
| CN1033892A (zh) | 1989-07-12 |
| JPH01179241A (ja) | 1989-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |