Paper Title:
Magnetocaloric Effect in Sm0.55Sr0.45MnO3 Manganite
  Abstract

Magnetocaloric effect (T-effect) was studied by direct method on three samples of Sm0.55Sr0.45MnO3 manganite: ceramic (C) sample and two single crystals, annealed in oxygen (O) or in air atmosphere (A). The temperature dependence of T-effect T(T) of all the samples has maximum at Tmax equal to 143.3 K for A-sample, 244 K for O-sample, and 143 K for C-sample. In these maxima T values are 0.8 K, 0.41 K, and 0.4 K for A-, O- and C-samples respectively. In addition, the T(T) curve of A-sample has minimum at Tmin = 120 K and T-value in minimum is equal to - 0.1 K. The maximum value of T-effect increases with H up to the maximum field of measurement 14.2 kOe. When this takes place the rate of this increasing is higher at H > 8 kOe than at H < 8 kOe. The above listed peculiarities of T-effect are explained by the presence in the samples of ferromagnetic, antiferromagnetic A-type and antiferromagnetic CE-type clusters.

  Info
Periodical
Solid State Phenomena (Volumes 168-169)
Main Theme
Edited by
V. Ustinov
Pages
373-375
DOI
10.4028/www.scientific.net/SSP.168-169.373
Citation
D.M. Zashchirinskii, A.S. Morozov, L.I. Koroleva, A.M. Balbashov, "Magnetocaloric Effect in Sm0.55Sr0.45MnO3 Manganite", Solid State Phenomena, Vols. 168-169, pp. 373-375, 2011
Online since
December 2010
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