Magnetic contribution to the Debye temperature and the lattice heat capacity of ferromagnetic rare-earth metals (using gadolinium as an example) / Bodryakov VY,Povzner AA,Zelyukova OG // PHYSICS OF THE SOLID STATE. - 1999. - V. 41, l. 7. - P. 1138-1143.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

A thermodynamic approach that describes the spontaneous magnetic contribution to the Debye temperature of a ferromagnetic metal has been developed using the theory of second-order Landau phase transitions. It is shown that the essential cause of the formation of the spontaneous magnetic contribution to the Debye temperature is the magnetostrictive variation of the volume. By using an expression for the spontaneous magnetic contribution to the Debye temperature, the magneto-phonon contribution to the lattice specific heat is found. The resulting generalized expression for the Debye temperature is found to be in good agreement with experimental data concerning the elastic constants of the ferromagnetic phase of gadolinium. The magneto-phonon heat capacity makes an appreciable contribution to the heat-capacity anomaly of gadolinium close to the Curie point. (C) 1999 American Institute of Physics. {[}S1063-7834(99)02507-1].

Author keywords:

PHONON

DOI:

10.1134/1.1130954

Web of Science ID:

ISI:000081819400025

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	AMER INST PHYSICS
Address	CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA
Language	English
Keywords-Plus	PHONON
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Povzner, Aleksandr/A-4625-2016
Number-of-Cited-References	14
Usage-Count-Since-2013	3
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	223BG