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Influence of the interface on the magnetic anisotropy of CoCu granular alloys
We present zero-field cooling (ZFC) DC magnetization measurements on Co x Cu 100 - x ( x = 5 , 10 ) granular ribbons. The analysis of these curves has allowed us to deepen on the study of the Co superparamagnetic phase. On one hand, the fitting of the ZFC magnetization curves has given values of the...
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| Published in: | Physica. B, Condensed matter Condensed matter, 2004-12, Vol.354 (1), p.92-97 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c364t-ae0885ae662a682d5dcbae67ca8a040c14d6618c246b11344b694202e66a63673 |
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| cites | cdi_FETCH-LOGICAL-c364t-ae0885ae662a682d5dcbae67ca8a040c14d6618c246b11344b694202e66a63673 |
| container_end_page | 97 |
| container_issue | 1 |
| container_start_page | 92 |
| container_title | Physica. B, Condensed matter |
| container_volume | 354 |
| creator | Prieto, A Garcia Fdez-Gubieda, M L |
| description | We present zero-field cooling (ZFC) DC magnetization measurements on
Co
x
Cu
100
-
x
(
x
=
5
,
10
)
granular ribbons. The analysis of these curves has allowed us to deepen on the study of the Co superparamagnetic phase. On one hand, the fitting of the ZFC magnetization curves has given values of the size and size-distribution of the Co nanoclusters in good agreement with previous results obtained from the analysis of the room temperature hysteresis loops on the same samples. On the other hand, we have obtained information about the effective volume magnetic crystalline anisotropy. The values found for this parameter are about one order of magnitude larger than that of FCC Co and size dependent, increasing as the cluster size decreases. We have related this enhancement of the magnetic anisotropy to the large contribution coming from the atoms at the surface of the Co nanoclusters. |
| doi_str_mv | 10.1016/j.physb.2004.09.025 |
| format | article |
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Co
x
Cu
100
-
x
(
x
=
5
,
10
)
granular ribbons. The analysis of these curves has allowed us to deepen on the study of the Co superparamagnetic phase. On one hand, the fitting of the ZFC magnetization curves has given values of the size and size-distribution of the Co nanoclusters in good agreement with previous results obtained from the analysis of the room temperature hysteresis loops on the same samples. On the other hand, we have obtained information about the effective volume magnetic crystalline anisotropy. The values found for this parameter are about one order of magnitude larger than that of FCC Co and size dependent, increasing as the cluster size decreases. We have related this enhancement of the magnetic anisotropy to the large contribution coming from the atoms at the surface of the Co nanoclusters.</description><identifier>ISSN: 0921-4526</identifier><identifier>DOI: 10.1016/j.physb.2004.09.025</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Diamagnetism, paramagnetism and superparamagnetism ; Exact sciences and technology ; Giant magnetoresistance ; Granular alloys ; Magnetic anisotropy ; Magnetic properties and materials ; Magnetotransport phenomena, materials for magnetotransport ; Physics</subject><ispartof>Physica. B, Condensed matter, 2004-12, Vol.354 (1), p.92-97</ispartof><rights>2004 Elsevier B.V.</rights><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-ae0885ae662a682d5dcbae67ca8a040c14d6618c246b11344b694202e66a63673</citedby><cites>FETCH-LOGICAL-c364t-ae0885ae662a682d5dcbae67ca8a040c14d6618c246b11344b694202e66a63673</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,778,782,787,788,23913,23914,25123,27907,27908</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16355838$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Prieto, A Garcia</creatorcontrib><creatorcontrib>Fdez-Gubieda, M L</creatorcontrib><title>Influence of the interface on the magnetic anisotropy of CoCu granular alloys</title><title>Physica. B, Condensed matter</title><description>We present zero-field cooling (ZFC) DC magnetization measurements on
Co
x
Cu
100
-
x
(
x
=
5
,
10
)
granular ribbons. The analysis of these curves has allowed us to deepen on the study of the Co superparamagnetic phase. On one hand, the fitting of the ZFC magnetization curves has given values of the size and size-distribution of the Co nanoclusters in good agreement with previous results obtained from the analysis of the room temperature hysteresis loops on the same samples. On the other hand, we have obtained information about the effective volume magnetic crystalline anisotropy. The values found for this parameter are about one order of magnitude larger than that of FCC Co and size dependent, increasing as the cluster size decreases. We have related this enhancement of the magnetic anisotropy to the large contribution coming from the atoms at the surface of the Co nanoclusters.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Diamagnetism, paramagnetism and superparamagnetism</subject><subject>Exact sciences and technology</subject><subject>Giant magnetoresistance</subject><subject>Granular alloys</subject><subject>Magnetic anisotropy</subject><subject>Magnetic properties and materials</subject><subject>Magnetotransport phenomena, materials for magnetotransport</subject><subject>Physics</subject><issn>0921-4526</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhj2ARCn8ApYssCXYjuMkAwOq-KhUxAKzdXGc1pVrBztByr_HaZHYuMW60_OedQ9CNwRnBBN-v8_63RSajGLMMlxnmBZnaIFrSlJWUH6BLkPY41ikJAv0tradGZWVKnFdMuxUou2gfAfzwB4HB9haNWiZgNXBDd7108yu3GpMth7saMAnYIybwhU678AEdf37LtHn89PH6jXdvL-sV4-bVOacDSkoXFUFKM4p8Iq2RSub2JUSKsAMS8JazkklKeMNITljDa8ZxTQGgOe8zJfo7rS39-5rVGEQBx2kMgascmMQtKZlyRiNYH4CpXcheNWJ3usD-EkQLGZdYi-OusSsS-BaRF0xdfu7HoIE08UjpQ5_UZ4XRZVXkXs4cSre-q2VF0Hq2WWrvZKDaJ3-958fc_KDKw</recordid><startdate>20041231</startdate><enddate>20041231</enddate><creator>Prieto, A Garcia</creator><creator>Fdez-Gubieda, M L</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20041231</creationdate><title>Influence of the interface on the magnetic anisotropy of CoCu granular alloys</title><author>Prieto, A Garcia ; Fdez-Gubieda, M L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-ae0885ae662a682d5dcbae67ca8a040c14d6618c246b11344b694202e66a63673</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Diamagnetism, paramagnetism and superparamagnetism</topic><topic>Exact sciences and technology</topic><topic>Giant magnetoresistance</topic><topic>Granular alloys</topic><topic>Magnetic anisotropy</topic><topic>Magnetic properties and materials</topic><topic>Magnetotransport phenomena, materials for magnetotransport</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Prieto, A Garcia</creatorcontrib><creatorcontrib>Fdez-Gubieda, M L</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. B, Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Prieto, A Garcia</au><au>Fdez-Gubieda, M L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of the interface on the magnetic anisotropy of CoCu granular alloys</atitle><jtitle>Physica. B, Condensed matter</jtitle><date>2004-12-31</date><risdate>2004</risdate><volume>354</volume><issue>1</issue><spage>92</spage><epage>97</epage><pages>92-97</pages><issn>0921-4526</issn><abstract>We present zero-field cooling (ZFC) DC magnetization measurements on
Co
x
Cu
100
-
x
(
x
=
5
,
10
)
granular ribbons. The analysis of these curves has allowed us to deepen on the study of the Co superparamagnetic phase. On one hand, the fitting of the ZFC magnetization curves has given values of the size and size-distribution of the Co nanoclusters in good agreement with previous results obtained from the analysis of the room temperature hysteresis loops on the same samples. On the other hand, we have obtained information about the effective volume magnetic crystalline anisotropy. The values found for this parameter are about one order of magnitude larger than that of FCC Co and size dependent, increasing as the cluster size decreases. We have related this enhancement of the magnetic anisotropy to the large contribution coming from the atoms at the surface of the Co nanoclusters.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2004.09.025</doi><tpages>6</tpages></addata></record> |
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| ispartof | Physica. B, Condensed matter, 2004-12, Vol.354 (1), p.92-97 |
| issn | 0921-4526 |
| language | eng |
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| source | ScienceDirect Freedom Collection |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Diamagnetism, paramagnetism and superparamagnetism Exact sciences and technology Giant magnetoresistance Granular alloys Magnetic anisotropy Magnetic properties and materials Magnetotransport phenomena, materials for magnetotransport Physics |
| title | Influence of the interface on the magnetic anisotropy of CoCu granular alloys |
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