Specific heat of La(Fe0.873Co0.007Al 0.12)13 compound in antiferromagnetic and ferromagnetic states / Podgornykh S.M., Kazantsev V.A., Myakon'Kikh V.I., Shcherbakova E.V., Ermakov A.A. // Journal of Experimental and Theoretical Physics. - 2007. - V. 105, l. 1. - P. 62-64.

ISSN:

10637761

Type:

Article

Abstract:

The low-temperature specific heat C p of La(Fe 0.873Co0.007Al0.12)13 compound has been measured in two states: (i) antiferromagnetic (AFM) with a Néel temperature of T N = 192 K and (ii) ferromagnetic (FM). The FM order appears at T = 4.2 K in a sample exposed to an external magnetic field with induction B C 2.5 T and is retained for a long time in a zero field at temperatures up to T*C = 23 K. The coefficient γFM in the low-temperature specific heat C = γT + βT 3 in the FM state differs quite insignificantly from that (γAFM) in the AFM state. Contributions to the low-temperature specific heat, which are related to a change in the elastic and magnetoelastic energy caused by magnetostrictive deformations, are considered. © 2007 Pleiades Publishing, Inc.

Author keywords:

Index keywords:

Ferromagnetic materials; Magnetic fields; Neel temperature; Specific heat; Low temperature specific heat; Magnetoelastic energy; Magnetostrictive deformations; Zero fields; Lanthanum compounds

DOI:

10.1134/S106377610707014X

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https://www.scopus.com/inward/record.uri?eid=2-s2.0-36048991469&doi=10.1134%2fS106377610707014X&partnerID=40&md5=e4b757674ffe647ae5a4e2b167e75857

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-36048991469&doi=10.1134%2fS106377610707014X&partnerID=40&md5=e4b757674ffe647ae5a4e2b167e75857
Affiliations	Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg 620041, Russian Federation; Ural State University, Yekaterinburg 620083, Russian Federation
References	Palstra, T.T.M., Nieuwenhuys, G.J., Mydosh, J.A., Buschow, K.H.J., (1985) Phys. Rev. B, 31, p. 4622; Shcherbakova, Ye.V., Korolyov, A.V., Podgornykh, S.M., (2001) J. Magn. Magn. Mater., 237, p. 147; Ermolenko, A.S., Shcherbakova, E.V., Andreev, A.V., Baranov, N.V., (1988) Fiz. Met. Metalloved., 65, p. 749; Wohlfarth, E.P., Rhodes, P., (1962) Philos. Mag., 7, p. 1817; Podgornykh, S.M., Shcherbakova, Ye.V., (2006) Phys. Rev. B, 73, p. 184421
Correspondence Address	Podgornykh, S.M.; Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg 620041, Russian Federation; email: sp@imp.uran.ru
Language of Original Document	English
Abbreviated Source Title	J. Exp. Theor. Phys.
Source	Scopus