Study of Magnetic Phase Transition and Spin Frustration in Cobalt Aluminium Oxide Materials based on High Temperature Series Expansions Model
Identifieur interne : 000682 ( Main/Exploration ); précédent : 000681; suivant : 000683Study of Magnetic Phase Transition and Spin Frustration in Cobalt Aluminium Oxide Materials based on High Temperature Series Expansions Model
Auteurs : R. Masrour [Maroc] ; M. Hamedoun [Maroc]Source :
- Multidiscipline Modeling in Materials and Structures [ 1573-6105 ] ; 2009-03-01.
Abstract
The magnetic properties of CoAl22xCo2xO4 for 0 x 1 are studied. The values of the nearest neighbour J1, nextnearest neighbour J2, intraplane Jaa and interplane Jab,Jac exchange interactions are calculated by the mean field theory for ordered region and by the probability law adapted of the nature of dilution problem in Aspinel lattice in spin glass region. The hightemperature series expansions have been applied in the CoAl22xCo2xO4 systems, combined with the Pad approximants method, to determine the Nel temperature TN K or freezing temperature TSG K in the range 0 x 1. The critical exponents associated with the magnetic susceptibility y and the correlation lengths v are deduced in the range ordered 0.3 x 1. The obtained values of y and v are insensitive to the dilution ratio x and may be compared with other theoretical results based on 3D Heisenberg model.
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DOI: 10.1163/157361109789017023
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Masrour</name><affiliation wicri:level="3"><country xml:lang="fr">Maroc</country><wicri:regionArea>Solid State Physics Laboratory, Sidi Mohammed Ben Abdellah University, Sciences Faculty, BP 1796, Fez, Morocco LMPHE, Facultdes Sciences, Universit Mohamed V, Rabat</wicri:regionArea><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Hamedoun, M" sort="Hamedoun, M" uniqKey="Hamedoun M" first="M." last="Hamedoun">M. Hamedoun</name><affiliation wicri:level="3"><country xml:lang="fr">Maroc</country><wicri:regionArea>Solid State Physics Laboratory, Sidi Mohammed Ben Abdellah University, Sciences Faculty, BP 1796, Fez, Morocco Expert Auprs de lAcadmie Hassan II des Sciences et Techniques, Rabat, Morocco Institute for Nanomaterials and Nanotechnologies, Rabat</wicri:regionArea><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Multidiscipline Modeling in Materials and Structures</title><idno type="ISSN">1573-6105</idno><imprint><publisher>Emerald Group Publishing Limited</publisher><date type="published" when="2009-03-01">2009-03-01</date><biblScope unit="volume">5</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="301">301</biblScope><biblScope unit="page" to="306">306</biblScope></imprint><idno type="ISSN">1573-6105</idno></series><idno type="istex">7F3F30CA196AC23975C8AF682B8007D53310D56B</idno><idno type="DOI">10.1163/157361109789017023</idno><idno type="filenameID">5080050315</idno><idno type="original-pdf">5080050315.pdf</idno><idno type="href">157361109789017023.pdf</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1573-6105</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The magnetic properties of CoAl22xCo2xO4 for 0 x 1 are studied. The values of the nearest neighbour J1, nextnearest neighbour J2, intraplane Jaa and interplane Jab,Jac exchange interactions are calculated by the mean field theory for ordered region and by the probability law adapted of the nature of dilution problem in Aspinel lattice in spin glass region. The hightemperature series expansions have been applied in the CoAl22xCo2xO4 systems, combined with the Pad approximants method, to determine the Nel temperature TN K or freezing temperature TSG K in the range 0 x 1. The critical exponents associated with the magnetic susceptibility y and the correlation lengths v are deduced in the range ordered 0.3 x 1. The obtained values of y and v are insensitive to the dilution ratio x and may be compared with other theoretical results based on 3D Heisenberg model.</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="Hamedoun, M" sort="Hamedoun, M" uniqKey="Hamedoun M" first="M." last="Hamedoun">M. Hamedoun</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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