Antiferromagnetically coupled media for magnetic recording with weak coupling layer

An embodiment of the invention is a layered magnetic thin film structure that uses antiferromagnetically coupled (AFC) magnetic layers where the top layer structure consists of an upper magnetic layer that is weakly ferromagnetically coupled via a nonmagnetic or weakly magnetic exchange coupling lay...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SUPPER NATACHA FREDERIQUE, DO HOA VAN, FULLERTON ERIC EDWARD, MARGULIES DAVID THOMAS
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator SUPPER NATACHA FREDERIQUE
DO HOA VAN
FULLERTON ERIC EDWARD
MARGULIES DAVID THOMAS
description An embodiment of the invention is a layered magnetic thin film structure that uses antiferromagnetically coupled (AFC) magnetic layers where the top layer structure consists of an upper magnetic layer that is weakly ferromagnetically coupled via a nonmagnetic or weakly magnetic exchange coupling layer (interlayer) to a ferromagnetic exchange enhancing layer that is in turn, AF coupled to the lower ferromagnetic layer of the AFC structure. Preferred materials for the weak coupling layer include alloys of cobalt such as CoRu, CoBRu and CoCr in which the Co content is below the point at which the material would be ferromagnetic. A second embodiment of the invention is a laminated, AF-coupled media structure. In this structure the lower AFC layer that makes up the lower laminate layer includes: the middle magnetic layer, the weak ferromagnetic coupling layer, and the exchange enhancing layer.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US7556870B2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US7556870B2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US7556870B23</originalsourceid><addsrcrecordid>eNrjZAh2zCvJTEstKsrPTUzPSy3JTE7MyalUSM4vLchJTVHITU3JTFRIyy9SgEkrFKUm5xelZOalK5RnlmQolKcmZkOUg4RyEitTi3gYWNMSc4pTeaE0N4OCm2uIs4duakF-fGpxQWJyKtCo-NBgc1NTMwtzAycjYyKUAABVtzj2</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Antiferromagnetically coupled media for magnetic recording with weak coupling layer</title><source>esp@cenet</source><creator>SUPPER NATACHA FREDERIQUE ; DO HOA VAN ; FULLERTON ERIC EDWARD ; MARGULIES DAVID THOMAS</creator><creatorcontrib>SUPPER NATACHA FREDERIQUE ; DO HOA VAN ; FULLERTON ERIC EDWARD ; MARGULIES DAVID THOMAS</creatorcontrib><description>An embodiment of the invention is a layered magnetic thin film structure that uses antiferromagnetically coupled (AFC) magnetic layers where the top layer structure consists of an upper magnetic layer that is weakly ferromagnetically coupled via a nonmagnetic or weakly magnetic exchange coupling layer (interlayer) to a ferromagnetic exchange enhancing layer that is in turn, AF coupled to the lower ferromagnetic layer of the AFC structure. Preferred materials for the weak coupling layer include alloys of cobalt such as CoRu, CoBRu and CoCr in which the Co content is below the point at which the material would be ferromagnetic. A second embodiment of the invention is a laminated, AF-coupled media structure. In this structure the lower AFC layer that makes up the lower laminate layer includes: the middle magnetic layer, the weak ferromagnetic coupling layer, and the exchange enhancing layer.</description><language>eng</language><subject>INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS</subject><creationdate>2009</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&amp;date=20090707&amp;DB=EPODOC&amp;CC=US&amp;NR=7556870B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20090707&amp;DB=EPODOC&amp;CC=US&amp;NR=7556870B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUPPER NATACHA FREDERIQUE</creatorcontrib><creatorcontrib>DO HOA VAN</creatorcontrib><creatorcontrib>FULLERTON ERIC EDWARD</creatorcontrib><creatorcontrib>MARGULIES DAVID THOMAS</creatorcontrib><title>Antiferromagnetically coupled media for magnetic recording with weak coupling layer</title><description>An embodiment of the invention is a layered magnetic thin film structure that uses antiferromagnetically coupled (AFC) magnetic layers where the top layer structure consists of an upper magnetic layer that is weakly ferromagnetically coupled via a nonmagnetic or weakly magnetic exchange coupling layer (interlayer) to a ferromagnetic exchange enhancing layer that is in turn, AF coupled to the lower ferromagnetic layer of the AFC structure. Preferred materials for the weak coupling layer include alloys of cobalt such as CoRu, CoBRu and CoCr in which the Co content is below the point at which the material would be ferromagnetic. A second embodiment of the invention is a laminated, AF-coupled media structure. In this structure the lower AFC layer that makes up the lower laminate layer includes: the middle magnetic layer, the weak ferromagnetic coupling layer, and the exchange enhancing layer.</description><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2009</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZAh2zCvJTEstKsrPTUzPSy3JTE7MyalUSM4vLchJTVHITU3JTFRIyy9SgEkrFKUm5xelZOalK5RnlmQolKcmZkOUg4RyEitTi3gYWNMSc4pTeaE0N4OCm2uIs4duakF-fGpxQWJyKtCo-NBgc1NTMwtzAycjYyKUAABVtzj2</recordid><startdate>20090707</startdate><enddate>20090707</enddate><creator>SUPPER NATACHA FREDERIQUE</creator><creator>DO HOA VAN</creator><creator>FULLERTON ERIC EDWARD</creator><creator>MARGULIES DAVID THOMAS</creator><scope>EVB</scope></search><sort><creationdate>20090707</creationdate><title>Antiferromagnetically coupled media for magnetic recording with weak coupling layer</title><author>SUPPER NATACHA FREDERIQUE ; DO HOA VAN ; FULLERTON ERIC EDWARD ; MARGULIES DAVID THOMAS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US7556870B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2009</creationdate><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>SUPPER NATACHA FREDERIQUE</creatorcontrib><creatorcontrib>DO HOA VAN</creatorcontrib><creatorcontrib>FULLERTON ERIC EDWARD</creatorcontrib><creatorcontrib>MARGULIES DAVID THOMAS</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUPPER NATACHA FREDERIQUE</au><au>DO HOA VAN</au><au>FULLERTON ERIC EDWARD</au><au>MARGULIES DAVID THOMAS</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Antiferromagnetically coupled media for magnetic recording with weak coupling layer</title><date>2009-07-07</date><risdate>2009</risdate><abstract>An embodiment of the invention is a layered magnetic thin film structure that uses antiferromagnetically coupled (AFC) magnetic layers where the top layer structure consists of an upper magnetic layer that is weakly ferromagnetically coupled via a nonmagnetic or weakly magnetic exchange coupling layer (interlayer) to a ferromagnetic exchange enhancing layer that is in turn, AF coupled to the lower ferromagnetic layer of the AFC structure. Preferred materials for the weak coupling layer include alloys of cobalt such as CoRu, CoBRu and CoCr in which the Co content is below the point at which the material would be ferromagnetic. A second embodiment of the invention is a laminated, AF-coupled media structure. In this structure the lower AFC layer that makes up the lower laminate layer includes: the middle magnetic layer, the weak ferromagnetic coupling layer, and the exchange enhancing layer.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_US7556870B2
source esp@cenet
subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Antiferromagnetically coupled media for magnetic recording with weak coupling layer
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-13T19%3A31%3A46IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=SUPPER%20NATACHA%20FREDERIQUE&rft.date=2009-07-07&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS7556870B2%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true