Exchange bias phenomenon in (Nd1-xYx)(2/3)Ca1/3MnO3 (x=0, 0.1) perovskites
authors Fertman, EL; Fedorchenko, AV; Kotlyar, AV; Desnenko, VA; Cizmar, E; Baran, A; Khalyavin, DD; Salak, AN; Shvartsman, VV; Feher, A
nationality International
journal LOW TEMPERATURE PHYSICS
keywords ND2/3CA1/3MNO3 PEROVSKITE; MAGNETIC-ANISOTROPY; FIELD-DEPENDENCE; MODEL; FILMS
abstract Exchange bias phenomenon, evident of antiferromagnetic-ferromagnetic phase segregation state, has been observed in (Nd1-xYx)(2/3)Ca1/3MnO3 (x = 0, 0.1) compounds at low temperatures. A contribution to the total magnetization of the compounds due to the ferromagnetic phase has been evaluated. It has been found that yttrium doping leads to the growth of the ferromagnetic phase fraction. The ferromagnetic phase in the doped compound has a lower coercivity H-c and more rectangular form of the hysteresis loop. The values of the exchange bias field H-EB and coercivity are found to be strongly dependent on the cooling magnetic field H-cool. In sufficiently high magnetic fields, H-cool > 5 kOe, H-EB in the doped compound is about twice as low as in the parent compound. This difference is attributed to a lower exchange interaction and higher saturation magnetization of the ferromagnetic phase in (Nd0.9Y0.1)(2/3)Ca1/3MnO3. (C) 2015 AIP Publishing LLC.
publisher AMER INST PHYSICS
issn 1063-777X
year published 2015
volume 41
issue 12
beginning page 1001
ending page 1005
digital object identifier (doi) 10.1063/1.4936671
web of science category Physics, Applied
subject category Physics
unique article identifier WOS:000367547000009
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