Magnetocaloric effect in Ni_{2.19}Mn_{0.81}Ga Heusler alloys

Issue title: E-MRS Fall Meeting 2005

Article type: Research Article

Authors: Buchelnikov, V.D.^{a; *} | Taskaev, S.V.^a | Aliev, A.M.^b | Batdalov, A.B.^b | Gamzatov, A.M.^b | Korolyov, A.V.^c | Kourov, N.I.^c | Pushin, V.G.^c | Koledov, V.V.^d | Khovailo, V.V.^d | Shavrov, V.G.^d | Grechishkin, R.M.^e

Affiliations: [a] Chelyabinsk State University, 454021 Chelyabinsk, Russia | [b] Institute of Physics of Dagestan Science Center, RAS, Makhachkala, Russia | [c] Institute of Metal Physics of Ural Branch of RAS, 620219 Ekaterinburg, Russia | [d] Institute of Radioengineering and Electronics, RAS, 125009 Moscow, Russia | [e] Tver State University, 170000 Tver, Russia

Correspondence: [*] Corresponding author. Tel.: +7 351 799 7117; Fax: +7 351 742 0925; E-mail: buche@csu.ru

Abstract: The results of direct measurements of the magnetic field induced entropy change in the Ni_{2.19}Mn_{0.81}Ga alloy are presented. It is shown that the largest entropy change in the magnetic field 2.6 T is equal to 11 J/kgK. The experimental data are compared with the theoretical results, obtained with the help of the statistical and molecular field theory.

Keywords: Magnetocaloric effect, ferromagnets, magnetostructural phase transition

DOI: 10.3233/JAE-2006-718

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 23, no. 1-2, pp. 65-69, 2006