Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films

Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films

Co doped rutile thin films were fabricated on α-Al2O3 (10-12) substrates by laser molecular beam epitaxy. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy indicated that the rutile thin films are (101) oriented and have smooth surfaces with no impurity phases. Co...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of applied physics 2004-05, Vol.95 (10), p.5330-5333
Hauptverfasser: Murakami, Makoto, Matsumoto, Yuji, Hasegawa, Tetsuya, Ahmet, Parhat, Nakajima, Kiyomi, Chikyow, Toyohiro, Ofuchi, Hironori, Nakai, Izumi, Koinuma, Hideomi
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 5333
container_issue 10
container_start_page 5330
container_title Journal of applied physics
container_volume 95
creator Murakami, Makoto
Matsumoto, Yuji
Hasegawa, Tetsuya
Ahmet, Parhat
Nakajima, Kiyomi
Chikyow, Toyohiro
Ofuchi, Hironori
Nakai, Izumi
Koinuma, Hideomi
description Co doped rutile thin films were fabricated on α-Al2O3 (10-12) substrates by laser molecular beam epitaxy. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy indicated that the rutile thin films are (101) oriented and have smooth surfaces with no impurity phases. Co K-edge x-ray absorption near-edge structure, extended x-ray absorption fine structure, and x-ray photoelectron spectroscopy revealed the coexistence of different valence states of Co in the film. Magnetic circular dichroism studies suggest that the observed ferromagnetism is uniform and is related to the electron band structure of TiO2 rutile. Contribution of oxidized (Co2+) and metallic (Co0) cobalt to the ferromagnetism is discussed.
doi_str_mv 10.1063/1.1695598
format Article
fullrecord <record><control><sourceid>crossref</sourceid><recordid>TN_cdi_crossref_primary_10_1063_1_1695598</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1063_1_1695598</sourcerecordid><originalsourceid>FETCH-LOGICAL-c225t-49673a1891b2f08d353fd91622bd8d579b326fbde3dc4edb58b2166494673bf53</originalsourceid><addsrcrecordid>eNotkL1OBCEYRYnRxHG18A1oLWblg4GB0kz8SzbZZrWdwAArhhk2gCa-vWvc6hQ35xYHoVsgayCC3cMahOJcyTPUAJGq7Tkn56ghhEIrVa8u0VUpn4QASKYa9D4ko2PF3zq6ZXK4VF1dwXqxOOWwD0vByWPvck6z3i-uhjLjsOAhYZsOzuJd2FKcv2qIDteP4-JDnMs1uvA6Fndz4gq9PT3uhpd2s31-HR427UQpr22nRM80SAWGeiIt48xbBYJSY6XlvTKMCm-sY3bqnDVcGgpCdKo7esZztkJ3_79TTqVk58dDDrPOPyOQ8S_ICOMpCPsFm3dSVA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films</title><source>AIP Journals Complete</source><source>AIP Digital Archive</source><creator>Murakami, Makoto ; Matsumoto, Yuji ; Hasegawa, Tetsuya ; Ahmet, Parhat ; Nakajima, Kiyomi ; Chikyow, Toyohiro ; Ofuchi, Hironori ; Nakai, Izumi ; Koinuma, Hideomi</creator><creatorcontrib>Murakami, Makoto ; Matsumoto, Yuji ; Hasegawa, Tetsuya ; Ahmet, Parhat ; Nakajima, Kiyomi ; Chikyow, Toyohiro ; Ofuchi, Hironori ; Nakai, Izumi ; Koinuma, Hideomi</creatorcontrib><description>Co doped rutile thin films were fabricated on α-Al2O3 (10-12) substrates by laser molecular beam epitaxy. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy indicated that the rutile thin films are (101) oriented and have smooth surfaces with no impurity phases. Co K-edge x-ray absorption near-edge structure, extended x-ray absorption fine structure, and x-ray photoelectron spectroscopy revealed the coexistence of different valence states of Co in the film. Magnetic circular dichroism studies suggest that the observed ferromagnetism is uniform and is related to the electron band structure of TiO2 rutile. Contribution of oxidized (Co2+) and metallic (Co0) cobalt to the ferromagnetism is discussed.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.1695598</identifier><language>eng</language><ispartof>Journal of applied physics, 2004-05, Vol.95 (10), p.5330-5333</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c225t-49673a1891b2f08d353fd91622bd8d579b326fbde3dc4edb58b2166494673bf53</citedby><cites>FETCH-LOGICAL-c225t-49673a1891b2f08d353fd91622bd8d579b326fbde3dc4edb58b2166494673bf53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Murakami, Makoto</creatorcontrib><creatorcontrib>Matsumoto, Yuji</creatorcontrib><creatorcontrib>Hasegawa, Tetsuya</creatorcontrib><creatorcontrib>Ahmet, Parhat</creatorcontrib><creatorcontrib>Nakajima, Kiyomi</creatorcontrib><creatorcontrib>Chikyow, Toyohiro</creatorcontrib><creatorcontrib>Ofuchi, Hironori</creatorcontrib><creatorcontrib>Nakai, Izumi</creatorcontrib><creatorcontrib>Koinuma, Hideomi</creatorcontrib><title>Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films</title><title>Journal of applied physics</title><description>Co doped rutile thin films were fabricated on α-Al2O3 (10-12) substrates by laser molecular beam epitaxy. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy indicated that the rutile thin films are (101) oriented and have smooth surfaces with no impurity phases. Co K-edge x-ray absorption near-edge structure, extended x-ray absorption fine structure, and x-ray photoelectron spectroscopy revealed the coexistence of different valence states of Co in the film. Magnetic circular dichroism studies suggest that the observed ferromagnetism is uniform and is related to the electron band structure of TiO2 rutile. Contribution of oxidized (Co2+) and metallic (Co0) cobalt to the ferromagnetism is discussed.</description><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNotkL1OBCEYRYnRxHG18A1oLWblg4GB0kz8SzbZZrWdwAArhhk2gCa-vWvc6hQ35xYHoVsgayCC3cMahOJcyTPUAJGq7Tkn56ghhEIrVa8u0VUpn4QASKYa9D4ko2PF3zq6ZXK4VF1dwXqxOOWwD0vByWPvck6z3i-uhjLjsOAhYZsOzuJd2FKcv2qIDteP4-JDnMs1uvA6Fndz4gq9PT3uhpd2s31-HR427UQpr22nRM80SAWGeiIt48xbBYJSY6XlvTKMCm-sY3bqnDVcGgpCdKo7esZztkJ3_79TTqVk58dDDrPOPyOQ8S_ICOMpCPsFm3dSVA</recordid><startdate>20040515</startdate><enddate>20040515</enddate><creator>Murakami, Makoto</creator><creator>Matsumoto, Yuji</creator><creator>Hasegawa, Tetsuya</creator><creator>Ahmet, Parhat</creator><creator>Nakajima, Kiyomi</creator><creator>Chikyow, Toyohiro</creator><creator>Ofuchi, Hironori</creator><creator>Nakai, Izumi</creator><creator>Koinuma, Hideomi</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20040515</creationdate><title>Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films</title><author>Murakami, Makoto ; Matsumoto, Yuji ; Hasegawa, Tetsuya ; Ahmet, Parhat ; Nakajima, Kiyomi ; Chikyow, Toyohiro ; Ofuchi, Hironori ; Nakai, Izumi ; Koinuma, Hideomi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c225t-49673a1891b2f08d353fd91622bd8d579b326fbde3dc4edb58b2166494673bf53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Murakami, Makoto</creatorcontrib><creatorcontrib>Matsumoto, Yuji</creatorcontrib><creatorcontrib>Hasegawa, Tetsuya</creatorcontrib><creatorcontrib>Ahmet, Parhat</creatorcontrib><creatorcontrib>Nakajima, Kiyomi</creatorcontrib><creatorcontrib>Chikyow, Toyohiro</creatorcontrib><creatorcontrib>Ofuchi, Hironori</creatorcontrib><creatorcontrib>Nakai, Izumi</creatorcontrib><creatorcontrib>Koinuma, Hideomi</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Murakami, Makoto</au><au>Matsumoto, Yuji</au><au>Hasegawa, Tetsuya</au><au>Ahmet, Parhat</au><au>Nakajima, Kiyomi</au><au>Chikyow, Toyohiro</au><au>Ofuchi, Hironori</au><au>Nakai, Izumi</au><au>Koinuma, Hideomi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films</atitle><jtitle>Journal of applied physics</jtitle><date>2004-05-15</date><risdate>2004</risdate><volume>95</volume><issue>10</issue><spage>5330</spage><epage>5333</epage><pages>5330-5333</pages><issn>0021-8979</issn><eissn>1089-7550</eissn><abstract>Co doped rutile thin films were fabricated on α-Al2O3 (10-12) substrates by laser molecular beam epitaxy. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy indicated that the rutile thin films are (101) oriented and have smooth surfaces with no impurity phases. Co K-edge x-ray absorption near-edge structure, extended x-ray absorption fine structure, and x-ray photoelectron spectroscopy revealed the coexistence of different valence states of Co in the film. Magnetic circular dichroism studies suggest that the observed ferromagnetism is uniform and is related to the electron band structure of TiO2 rutile. Contribution of oxidized (Co2+) and metallic (Co0) cobalt to the ferromagnetism is discussed.</abstract><doi>10.1063/1.1695598</doi><tpages>4</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0021-8979
ispartof Journal of applied physics, 2004-05, Vol.95 (10), p.5330-5333
issn 0021-8979
1089-7550
language eng
recordid cdi_crossref_primary_10_1063_1_1695598
source AIP Journals Complete; AIP Digital Archive
title Cobalt valence states and origins of ferromagnetism in Co doped TiO2 rutile thin films
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T13%3A08%3A54IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-crossref&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Cobalt%20valence%20states%20and%20origins%20of%20ferromagnetism%20in%20Co%20doped%20TiO2%20rutile%20thin%20films&rft.jtitle=Journal%20of%20applied%20physics&rft.au=Murakami,%20Makoto&rft.date=2004-05-15&rft.volume=95&rft.issue=10&rft.spage=5330&rft.epage=5333&rft.pages=5330-5333&rft.issn=0021-8979&rft.eissn=1089-7550&rft_id=info:doi/10.1063/1.1695598&rft_dat=%3Ccrossref%3E10_1063_1_1695598%3C/crossref%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