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Synthesis, structural and magnetic studies of the CuCr1-xCoxO2 delafossite oxide

Identifieur interne : 000329 ( Main/Curation ); précédent : 000328; suivant : 000330

Synthesis, structural and magnetic studies of the CuCr1-xCoxO2 delafossite oxide

Auteurs : T. Elkhouni [Tunisie] ; M. Amami [Tunisie] ; C. V. Colin [France] ; P. Strobel [France] ; A. Ben Salah [Tunisie]

Source :

Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2013.

RBID : Pascal:13-0110347

Descripteurs français

Pascal (Inist)
- Chiralité, Aimantation, Impureté, Structure magnétique, Spectre Raman, Ferromagnétisme faible, Transition magnétique, Structure cristalline, Antiferromagnétisme, Structure delafossite, Chrome Cuivre Oxyde Mixte, Addition cobalt, Semiconducteur semimagnétique, Semiconducteur type p, CuCrO2.

English descriptors

KwdEn :
- Antiferromagnetism, Chirality, Chromium Copper Oxides Mixed, Cobalt additions, Crystal structure, Delafossite structure, Impurities, Magnetic structure, Magnetic transitions, Magnetization, Raman spectra, Semimagnetic semiconductors, Weak ferromagnetism, p type semiconductor.

Abstract

We modulate the spin chirality and the magnetization in CuCrO₂, by doping at Cr³⁺ sites with magnetic ions of slightly different size. Structure and magnetic properties of delafossite oxide CuCr_1-xCo_xO₂ (0≤x≤0.06) have been investigated. With the substitution of magnetic Co³⁺ for Cr³⁺ (S=3/2), the antiferromagnetic (AF) transition becomes broader and the transition temperature increases. However, at low temperature, the magnetic data for CuCr, -_xCo_xO₂ shows evidence for weak ferromagnetism. Comparing the substitution effect of Co³⁺ to those of other magnetic metal transition, magnetization around the AF transition does not seem to correlate with randomness and lattice parameter.

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Le document en format XML

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Co<sub>x</sub>
O<sub>2</sub>
 delafossite oxide</title>
<author><name sortKey="Elkhouni, T" sort="Elkhouni, T" uniqKey="Elkhouni T" first="T." last="Elkhouni">T. Elkhouni</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Synthesis, structural and magnetic studies of the CuCr<sub>1-x</sub>
Co<sub>x</sub>
O<sub>2</sub>
 delafossite oxide</title>
<author><name sortKey="Elkhouni, T" sort="Elkhouni, T" uniqKey="Elkhouni T" first="T." last="Elkhouni">T. Elkhouni</name>
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<author><name sortKey="Colin, C V" sort="Colin, C V" uniqKey="Colin C" first="C. V." last="Colin">C. V. Colin</name>
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<author><name sortKey="Strobel, P" sort="Strobel, P" uniqKey="Strobel P" first="P." last="Strobel">P. Strobel</name>
<affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Institut Néel, CNRS et Université Joseph Fourier, B.P. 166</s1>
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</placeName>
<orgName type="university">Université Joseph Fourier</orgName>
</affiliation>
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<author><name sortKey="Salah, A Ben" sort="Salah, A Ben" uniqKey="Salah A" first="A. Ben" last="Salah">A. Ben Salah</name>
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<sZ>1 aut.</sZ>
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<series><title level="j" type="main">Journal of magnetism and magnetic materials</title>
<title level="j" type="abbreviated">J. magn. magn. mater.</title>
<idno type="ISSN">0304-8853</idno>
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<seriesStmt><title level="j" type="main">Journal of magnetism and magnetic materials</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antiferromagnetism</term>
<term>Chirality</term>
<term>Chromium Copper Oxides Mixed</term>
<term>Cobalt additions</term>
<term>Crystal structure</term>
<term>Delafossite structure</term>
<term>Impurities</term>
<term>Magnetic structure</term>
<term>Magnetic transitions</term>
<term>Magnetization</term>
<term>Raman spectra</term>
<term>Semimagnetic semiconductors</term>
<term>Weak ferromagnetism</term>
<term>p type semiconductor</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Chiralité</term>
<term>Aimantation</term>
<term>Impureté</term>
<term>Structure magnétique</term>
<term>Spectre Raman</term>
<term>Ferromagnétisme faible</term>
<term>Transition magnétique</term>
<term>Structure cristalline</term>
<term>Antiferromagnétisme</term>
<term>Structure delafossite</term>
<term>Chrome Cuivre Oxyde Mixte</term>
<term>Addition cobalt</term>
<term>Semiconducteur semimagnétique</term>
<term>Semiconducteur type p</term>
<term>CuCrO2</term>
</keywords>
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</teiHeader>
<front><div type="abstract" xml:lang="en">We modulate the spin chirality and the magnetization in CuCrO<sub>2</sub>
, by doping at Cr<sup>3+</sup>
 sites with magnetic ions of slightly different size. Structure and magnetic properties of delafossite oxide CuCr<sub>1-x</sub>
Co<sub>x</sub>
O<sub>2</sub>
 (0≤x≤0.06) have been investigated. With the substitution of magnetic Co<sup>3+</sup>
 for Cr<sup>3+</sup>
 (S=3/2), the antiferromagnetic (AF) transition becomes broader and the transition temperature increases. However, at low temperature, the magnetic data for CuCr, -<sub>x</sub>
Co<sub>x</sub>
O<sub>2</sub>
 shows evidence for weak ferromagnetism. Comparing the substitution effect of Co<sup>3+</sup>
 to those of other magnetic metal transition, magnetization around the AF transition does not seem to correlate with randomness and lattice parameter.</div>
</front>
</TEI>
</record>

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Synthesis, structural and magnetic studies of the CuCr1-xCoxO2 delafossite oxide

Synthesis, structural and magnetic studies of the CuCr1-xCoxO2 delafossite oxide

Source :

Descripteurs français

English descriptors

Abstract

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