Study of the Underlayer of a PdPtMn Spin-Valve Film

Study of the Underlayer of a PdPtMn Spin-Valve Film

We investigated the PdPtMn bottom spin-valve, which had an high resistivity NiFeCr underlayer. The MR ratio of the NiFeCr-underlayer spin-valve became 1.14 times higher than that of a NiFe-underlayer, because the shunt loss of the underlayer was reduced, and the Hua of the pinned layer also became h...

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Veröffentlicht in:Journal of the Magnetics Society of Japan 1998, Vol.22(4_2), pp.501-504
Hauptverfasser: Aoshima, K., Mukouyama, N., Yamada, K., Kane, J., Kanai, H.
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
antiferromagnetic film
exchange coupling
MR head
NiFeCr
shift of operating point
shunt loss
spin-valve head
underlayer
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container_end_page 504
container_issue 4_2
container_start_page 501
container_title Journal of the Magnetics Society of Japan
container_volume 22
creator Aoshima, K.
Mukouyama, N.
Yamada, K.
Kane, J.
Kanai, H.
description We investigated the PdPtMn bottom spin-valve, which had an high resistivity NiFeCr underlayer. The MR ratio of the NiFeCr-underlayer spin-valve became 1.14 times higher than that of a NiFe-underlayer, because the shunt loss of the underlayer was reduced, and the Hua of the pinned layer also became higher. We found by X-ray diffraction that a PdPtMn spin-valve with a Ta/NiFeCr underlayer had a strong (111) texture. Cross-sectional TEM observation revealed that PdPtMn on a NiFeCr underlayer had a larger grain than PdPtMn on a Ta underlayer. The initial layer of the PdPtMn with the NiFeCr underlayer had a stronger (111) orientation than the PdPtMn with the Ta underlayer. To achieve a large Hua, PdPtMn with a (111) texture and large grain size is required. We simulated the R-H curves of the spin-valve in the head shape. The shift in the quiescent operating point on the R-H curve was smaller for an NiFeCr underlayer than for an NiFe one.
doi_str_mv 10.3379/jmsjmag.22.501
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The MR ratio of the NiFeCr-underlayer spin-valve became 1.14 times higher than that of a NiFe-underlayer, because the shunt loss of the underlayer was reduced, and the Hua of the pinned layer also became higher. We found by X-ray diffraction that a PdPtMn spin-valve with a Ta/NiFeCr underlayer had a strong (111) texture. Cross-sectional TEM observation revealed that PdPtMn on a NiFeCr underlayer had a larger grain than PdPtMn on a Ta underlayer. The initial layer of the PdPtMn with the NiFeCr underlayer had a stronger (111) orientation than the PdPtMn with the Ta underlayer. To achieve a large Hua, PdPtMn with a (111) texture and large grain size is required. We simulated the R-H curves of the spin-valve in the head shape. The shift in the quiescent operating point on the R-H curve was smaller for an NiFeCr underlayer than for an NiFe one.</description><identifier>ISSN: 0285-0192</identifier><identifier>EISSN: 1880-4004</identifier><identifier>DOI: 10.3379/jmsjmag.22.501</identifier><language>eng ; jpn</language><publisher>The Magnetics Society of Japan</publisher><subject>antiferromagnetic film ; exchange coupling ; MR head ; NiFeCr ; shift of operating point ; shunt loss ; spin-valve head ; underlayer</subject><ispartof>Journal of the Magnetics Society of Japan, 1998, Vol.22(4_2), pp.501-504</ispartof><rights>1998 by The Magnetics Society of Japan</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2451-b26a9ab4985d4781dac29c67d765ee41a7a8b83db426b0a5f178100b01fa323d3</citedby><cites>FETCH-LOGICAL-c2451-b26a9ab4985d4781dac29c67d765ee41a7a8b83db426b0a5f178100b01fa323d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Aoshima, K.</creatorcontrib><creatorcontrib>Mukouyama, N.</creatorcontrib><creatorcontrib>Yamada, K.</creatorcontrib><creatorcontrib>Kane, J.</creatorcontrib><creatorcontrib>Kanai, H.</creatorcontrib><title>Study of the Underlayer of a PdPtMn Spin-Valve Film</title><title>Journal of the Magnetics Society of Japan</title><addtitle>J. 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The shift in the quiescent operating point on the R-H curve was smaller for an NiFeCr underlayer than for an NiFe one.</description><subject>antiferromagnetic film</subject><subject>exchange coupling</subject><subject>MR head</subject><subject>NiFeCr</subject><subject>shift of operating point</subject><subject>shunt loss</subject><subject>spin-valve head</subject><subject>underlayer</subject><issn>0285-0192</issn><issn>1880-4004</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNpNj11LwzAYhYMoWKe3XucPtObNR5teynBTmDiY8za8bdKtpe1GUoX9ezs2h1cHDs9z4BDyCCwRIsufmi40HW4SzhPF4IpEoDWLJWPymkSMaxUzyPktuQuhGUtQABERq-HbHuiuosPW0XVvnW_x4PyxQbq0y-G9p6t93cdf2P44Oqvb7p7cVNgG93DOCVnPXj6nr_HiY_42fV7EJZcK4oKnmGMhc62szDRYLHleppnNUuWcBMxQF1rYQvK0YKgqGCHGCgYVCi6smJDktFv6XQjeVWbv6w79wQAzx8vmfNlwbsbLozA_CU0YcOMuOPqhLlv3H5eG_8VoXohyi964XvwCltdjZg</recordid><startdate>1998</startdate><enddate>1998</enddate><creator>Aoshima, K.</creator><creator>Mukouyama, N.</creator><creator>Yamada, K.</creator><creator>Kane, J.</creator><creator>Kanai, H.</creator><general>The Magnetics Society of Japan</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>1998</creationdate><title>Study of the Underlayer of a PdPtMn Spin-Valve Film</title><author>Aoshima, K. ; Mukouyama, N. ; Yamada, K. ; Kane, J. ; Kanai, H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2451-b26a9ab4985d4781dac29c67d765ee41a7a8b83db426b0a5f178100b01fa323d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>1998</creationdate><topic>antiferromagnetic film</topic><topic>exchange coupling</topic><topic>MR head</topic><topic>NiFeCr</topic><topic>shift of operating point</topic><topic>shunt loss</topic><topic>spin-valve head</topic><topic>underlayer</topic><toplevel>online_resources</toplevel><creatorcontrib>Aoshima, K.</creatorcontrib><creatorcontrib>Mukouyama, N.</creatorcontrib><creatorcontrib>Yamada, K.</creatorcontrib><creatorcontrib>Kane, J.</creatorcontrib><creatorcontrib>Kanai, H.</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of the Magnetics Society of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Aoshima, K.</au><au>Mukouyama, N.</au><au>Yamada, K.</au><au>Kane, J.</au><au>Kanai, H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of the Underlayer of a PdPtMn Spin-Valve Film</atitle><jtitle>Journal of the Magnetics Society of Japan</jtitle><addtitle>J. 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source J-STAGE Free; Open Access Titles of Japan; EZB-FREE-00999 freely available EZB journals
subjects antiferromagnetic film
exchange coupling
MR head
NiFeCr
shift of operating point
shunt loss
spin-valve head
underlayer
title Study of the Underlayer of a PdPtMn Spin-Valve Film
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