Study of Magnetic Phase Transition in Diluted Nanostructure Spinel Ferrites
Identifieur interne : 000544 ( Main/Exploration ); précédent : 000543; suivant : 000545Study of Magnetic Phase Transition in Diluted Nanostructure Spinel Ferrites
Auteurs : R. Masrour [Maroc] ; M. Hamedoun [Maroc] ; A. Benyoussef [Maroc]Source :
- Journal of superconductivity and novel magnetism [ 1557-1939 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Transition magnétique, Composition chimique, Approximation champ moyen, Développement série, Loi probabilité, Interaction échange, Point critique, Diagramme phase magnétique, Aimantation saturation, Force coercitive, Effet champ magnétique, Chrome Cobalt Fer Oxyde Mixte, Nanoparticule, Ferrites spinelles, Ferrite de chrome et de cobalt.
English descriptors
- KwdEn :
- Chemical composition, Chromium Cobalt Iron Oxides Mixed, Coercive force, Critical points, Exchange interactions, Ferrites spinels, Magnetic field effects, Magnetic transitions, Magnetic-phase diagrams, Mean field approximation, Nanoparticles, Probability distribution, Saturation magnetization, Series expansion.
Abstract
The magnetic properties of CoFe2-2xCr2xO4 spinels are studied by different theoretical methods: the mean field theory, the high-temperature series expansions (MFT, HTSE) and the probability distribution law with the different size L (nm). The exchange interactions and the critical temperature Tc. (K) are given for the nano-spinel ferrites. The magnetic phase diagram of CoFe2-2xCr2xO4 is deduced. The saturation magnetization, the coercivity field and magnetic energy are obtained.
Affiliations:
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Le document en format XML
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Masrour</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>LMPHE, Faculté des Sciences, Université Mohamed V</s1><s2>Rabat</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences</s1><s2>Safi</s2><s3>MAR</s3><sZ>1 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Safi</wicri:noRegion></affiliation></author><author><name sortKey="Hamedoun, M" sort="Hamedoun, M" uniqKey="Hamedoun M" first="M." last="Hamedoun">M. Hamedoun</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institute for Nanomaterials and Nanotechnologies</s1><s2>Rabat</s2><s3>MAR</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="04"><s1>Academie Hassan II des Sciences et Techniques</s1><s2>Rabat</s2><s3>MAR</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Benyoussef, A" sort="Benyoussef, A" uniqKey="Benyoussef A" first="A." last="Benyoussef">A. Benyoussef</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>LMPHE, Faculté des Sciences, Université Mohamed V</s1><s2>Rabat</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institute for Nanomaterials and Nanotechnologies</s1><s2>Rabat</s2><s3>MAR</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="04"><s1>Academie Hassan II des Sciences et Techniques</s1><s2>Rabat</s2><s3>MAR</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of superconductivity and novel magnetism</title><title level="j" type="abbreviated">J. supercond. nov. magn.</title><idno type="ISSN">1557-1939</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of superconductivity and novel magnetism</title><title level="j" type="abbreviated">J. supercond. nov. magn.</title><idno type="ISSN">1557-1939</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chemical composition</term><term>Chromium Cobalt Iron Oxides Mixed</term><term>Coercive force</term><term>Critical points</term><term>Exchange interactions</term><term>Ferrites spinels</term><term>Magnetic field effects</term><term>Magnetic transitions</term><term>Magnetic-phase diagrams</term><term>Mean field approximation</term><term>Nanoparticles</term><term>Probability distribution</term><term>Saturation magnetization</term><term>Series expansion</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Transition magnétique</term><term>Composition chimique</term><term>Approximation champ moyen</term><term>Développement série</term><term>Loi probabilité</term><term>Interaction échange</term><term>Point critique</term><term>Diagramme phase magnétique</term><term>Aimantation saturation</term><term>Force coercitive</term><term>Effet champ magnétique</term><term>Chrome Cobalt Fer Oxyde Mixte</term><term>Nanoparticule</term><term>Ferrites spinelles</term><term>Ferrite de chrome et de cobalt</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The magnetic properties of CoFe<sub>2-2x</sub>Cr<sub>2x</sub>O<sub>4</sub> spinels are studied by different theoretical methods: the mean field theory, the high-temperature series expansions (MFT, HTSE) and the probability distribution law with the different size L (nm). The exchange interactions and the critical temperature T<sub>c</sub>. (K) are given for the nano-spinel ferrites. The magnetic phase diagram of CoFe<sub>2-2x</sub>Cr<sub>2x</sub>O<sub>4</sub> is deduced. The saturation magnetization, the coercivity field and magnetic energy are obtained.</div></front></TEI><affiliations><list><country><li>Maroc</li></country><region><li>Rabat-Salé-Kénitra</li></region><settlement><li>Rabat</li></settlement></list><tree><country name="Maroc"><region name="Rabat-Salé-Kénitra"><name sortKey="Masrour, R" sort="Masrour, R" uniqKey="Masrour R" first="R." last="Masrour">R. Masrour</name></region><name sortKey="Benyoussef, A" sort="Benyoussef, A" uniqKey="Benyoussef A" first="A." last="Benyoussef">A. Benyoussef</name><name sortKey="Benyoussef, A" sort="Benyoussef, A" uniqKey="Benyoussef A" first="A." last="Benyoussef">A. Benyoussef</name><name sortKey="Benyoussef, A" sort="Benyoussef, A" uniqKey="Benyoussef A" first="A." last="Benyoussef">A. Benyoussef</name><name sortKey="Hamedoun, M" sort="Hamedoun, M" uniqKey="Hamedoun M" first="M." last="Hamedoun">M. Hamedoun</name><name sortKey="Hamedoun, M" sort="Hamedoun, M" uniqKey="Hamedoun M" first="M." last="Hamedoun">M. Hamedoun</name><name sortKey="Masrour, R" sort="Masrour, R" uniqKey="Masrour R" first="R." last="Masrour">R. Masrour</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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