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Irreversibility and Thermoremanent Magnetization in Y_0.8Sr_0.2MnO₃

Journal of Magnetics, Volume 17, Number 3, 30 Sep 2012, Pages 168-171

Agustina Ismail (Department of Physics, Hankuk University of Foreign Studies), W. Yansen (Department of Physics, Hankuk University of Foreign Studies), R. Rajagukguk (Department of Physics, Hankuk University of Foreign Studies), Y. M. Kwon (Department of Physics, Hankuk University of Foreign Studies), J. Kim (Department of Physics, Hankuk University of Foreign Studies), B. W. Lee *

(Department of Physics, Hankuk University of Foreign Studies)

Abstract

Irreversible magnetization between the zero-field-cooled (ZFC) and field-cooled (FC) states in Y_1-xSr_xMnO₃(x=0 and 0.2) was investigated. YMnO₃ and Y_0.8Sr_0.2MnO₃have a hexagonal structure and the lattice parameter a decreases from 7.4408 Å to 7.4327 Å while c increases from 12.2244 Å to 12.2287 Å for YMnO₃and Y_0.8Sr_0.2MnO₃, respectively. An anomaly is observed at around 74 K in ZFC and FC magnetization measurements for YMnO₃, whereas in Y_0.8Sr_0.2MnO₃the σ_ZFC and σ_FC are split at low temperature, indicating glass-like behavior.

Keywords: anisotropy field; glass behavior; irreversibility magnetization; thermoremanent magnetization

DOI: http://dx.doi.org/10.4283/JMAG.2012.17.3.168

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