FORMING METHOD OF PHOTOMAGNETIC RECORDING MEDIUM
PURPOSE:To increase coercive force, by a method wherein, when a recording film of photomagnetic recording medium having Pt/Co lamination structure is formed, it is formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /...
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| creator | FUCHIGAMI YASUKO WASHIMI SATOSHI |
| description | PURPOSE:To increase coercive force, by a method wherein, when a recording film of photomagnetic recording medium having Pt/Co lamination structure is formed, it is formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively. CONSTITUTION:Co layers 2 and Pt layer 3 are repeatedly laminated in this order on a glass substrate 1. When a Pt/Co lamination film is formed on the substrate 1, a rotary shaft 8 is set as a rotation center, a substrate holder 9 is rotated, and a Co target 6 and a Pt target 7 are subjected to sputtering by a power supply 10 and a power supply 11, respectively. When the substrate 1 comes to a region facing the Co target 6 isolated by a partition 5, a Co layer is formed. When the substrate 1 comes to a region facing the Pt target 7, a Pt layer is formed. When these layers are formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively, the coercive force becomes higher than or equal to 700Oe. Thus the coercive force having a level capable of practical use can be obtained. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPH04260313A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPH04260313A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPH04260313A3</originalsourceid><addsrcrecordid>eNrjZDBw8w_y9fRzV_B1DfHwd1Hwd1MI8PAP8fd1dPdzDfF0VghydfYPcoGocPEM9eVhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfFeAR4GJkZmBsaGxo7GxKgBADanJnc</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>FORMING METHOD OF PHOTOMAGNETIC RECORDING MEDIUM</title><source>esp@cenet</source><creator>FUCHIGAMI YASUKO ; WASHIMI SATOSHI</creator><creatorcontrib>FUCHIGAMI YASUKO ; WASHIMI SATOSHI</creatorcontrib><description>PURPOSE:To increase coercive force, by a method wherein, when a recording film of photomagnetic recording medium having Pt/Co lamination structure is formed, it is formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively. CONSTITUTION:Co layers 2 and Pt layer 3 are repeatedly laminated in this order on a glass substrate 1. When a Pt/Co lamination film is formed on the substrate 1, a rotary shaft 8 is set as a rotation center, a substrate holder 9 is rotated, and a Co target 6 and a Pt target 7 are subjected to sputtering by a power supply 10 and a power supply 11, respectively. When the substrate 1 comes to a region facing the Co target 6 isolated by a partition 5, a Co layer is formed. When the substrate 1 comes to a region facing the Pt target 7, a Pt layer is formed. When these layers are formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively, the coercive force becomes higher than or equal to 700Oe. Thus the coercive force having a level capable of practical use can be obtained.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; ELECTRICITY ; INDUCTANCES ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; MAGNETS ; PHYSICS ; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ; TRANSFORMERS</subject><creationdate>1992</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920916&DB=EPODOC&CC=JP&NR=H04260313A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920916&DB=EPODOC&CC=JP&NR=H04260313A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FUCHIGAMI YASUKO</creatorcontrib><creatorcontrib>WASHIMI SATOSHI</creatorcontrib><title>FORMING METHOD OF PHOTOMAGNETIC RECORDING MEDIUM</title><description>PURPOSE:To increase coercive force, by a method wherein, when a recording film of photomagnetic recording medium having Pt/Co lamination structure is formed, it is formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively. CONSTITUTION:Co layers 2 and Pt layer 3 are repeatedly laminated in this order on a glass substrate 1. When a Pt/Co lamination film is formed on the substrate 1, a rotary shaft 8 is set as a rotation center, a substrate holder 9 is rotated, and a Co target 6 and a Pt target 7 are subjected to sputtering by a power supply 10 and a power supply 11, respectively. When the substrate 1 comes to a region facing the Co target 6 isolated by a partition 5, a Co layer is formed. When the substrate 1 comes to a region facing the Pt target 7, a Pt layer is formed. When these layers are formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively, the coercive force becomes higher than or equal to 700Oe. Thus the coercive force having a level capable of practical use can be obtained.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>ELECTRICITY</subject><subject>INDUCTANCES</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>MAGNETS</subject><subject>PHYSICS</subject><subject>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</subject><subject>TRANSFORMERS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDBw8w_y9fRzV_B1DfHwd1Hwd1MI8PAP8fd1dPdzDfF0VghydfYPcoGocPEM9eVhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfFeAR4GJkZmBsaGxo7GxKgBADanJnc</recordid><startdate>19920916</startdate><enddate>19920916</enddate><creator>FUCHIGAMI YASUKO</creator><creator>WASHIMI SATOSHI</creator><scope>EVB</scope></search><sort><creationdate>19920916</creationdate><title>FORMING METHOD OF PHOTOMAGNETIC RECORDING MEDIUM</title><author>FUCHIGAMI YASUKO ; WASHIMI SATOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH04260313A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1992</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>ELECTRICITY</topic><topic>INDUCTANCES</topic><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>MAGNETS</topic><topic>PHYSICS</topic><topic>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</topic><topic>TRANSFORMERS</topic><toplevel>online_resources</toplevel><creatorcontrib>FUCHIGAMI YASUKO</creatorcontrib><creatorcontrib>WASHIMI SATOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FUCHIGAMI YASUKO</au><au>WASHIMI SATOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>FORMING METHOD OF PHOTOMAGNETIC RECORDING MEDIUM</title><date>1992-09-16</date><risdate>1992</risdate><abstract>PURPOSE:To increase coercive force, by a method wherein, when a recording film of photomagnetic recording medium having Pt/Co lamination structure is formed, it is formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively. CONSTITUTION:Co layers 2 and Pt layer 3 are repeatedly laminated in this order on a glass substrate 1. When a Pt/Co lamination film is formed on the substrate 1, a rotary shaft 8 is set as a rotation center, a substrate holder 9 is rotated, and a Co target 6 and a Pt target 7 are subjected to sputtering by a power supply 10 and a power supply 11, respectively. When the substrate 1 comes to a region facing the Co target 6 isolated by a partition 5, a Co layer is formed. When the substrate 1 comes to a region facing the Pt target 7, a Pt layer is formed. When these layers are formed under the condition that the film formation rate of Pt and that of Co are lower than or equal to 34Angstrom /min and 10Angstrom /min, respectively, the coercive force becomes higher than or equal to 700Oe. Thus the coercive force having a level capable of practical use can be obtained.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS ELECTRICITY INDUCTANCES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MAGNETS PHYSICS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS |
| title | FORMING METHOD OF PHOTOMAGNETIC RECORDING MEDIUM |
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