Exchange bias phenomenon, evident of antiferromagnetic–ferromagnetic phase segregation state, has been observed in (Nd1−xYx)2/3Ca1/3MnO3 (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 Hc and more rectangular form of the hysteresis loop. The values of the exchange bias field HEB and coercivity are found to be strongly dependent on the cooling magnetic field Hcool. In sufficiently high magnetic fields, Hcool > 5 kOe, HEB 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)2/3Ca1/3MnO3.
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December 2015
Research Article|
December 01 2015
Exchange bias phenomenon in (Nd1−xYx)2/3Ca1/3MnO3 (x = 0, 0.1) perovskites
E. L. Fertman;
E. L. Fertman
a)
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
, 47 Lenin Ave., Kharkov 61103, Ukraine
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A. V. Fedorchenko;
A. V. Fedorchenko
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
, 47 Lenin Ave., Kharkov 61103, Ukraine
and Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice
, 9 Park Angelinum, Košice 04154, Slovakia
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A. V. Kotlyar;
A. V. Kotlyar
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
, 47 Lenin Ave., Kharkov 61103, Ukraine
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V. A. Desnenko;
V. A. Desnenko
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
, 47 Lenin Ave., Kharkov 61103, Ukraine
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E. Čižmár;
E. Čižmár
Institute of Physics, Faculty of Science,
P.J. Šafárik University in Košice
, 9 Park Angelinum, Košice 04154, Slovakia
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A. Baran;
A. Baran
Department of Physics, Faculty of Electrical Engineering and Informatics,
Technical University of Košice
, 2 Park Komenského, Košice 042 00, Slovakia
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D. D. Khalyavin;
D. D. Khalyavin
ISIS Facility, STFC
, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
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A. N. Salak;
A. N. Salak
Department of Materials and Ceramic Engineering/CICECO,
University of Aveiro
, Aveiro 3810-193, Portugal
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V. V. Shvartsman;
V. V. Shvartsman
Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE),
University of Duisburg-Essen
, 15 Universitätsstrasse, Essen 45141, Germany
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A. Feher
A. Feher
Institute of Physics, Faculty of Science,
P.J. Šafárik University in Košice
, 9 Park Angelinum, Košice 04154, Slovakia
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a)
Email: Fertman@ilt.kharkov.ua
Low Temp. Phys. 41, 1001–1005 (2015)
Citation
E. L. Fertman, A. V. Fedorchenko, A. V. Kotlyar, V. A. Desnenko, E. Čižmár, A. Baran, D. D. Khalyavin, A. N. Salak, V. V. Shvartsman, A. Feher; Exchange bias phenomenon in (Nd1−xYx)2/3Ca1/3MnO3 (x = 0, 0.1) perovskites. Low Temp. Phys. 1 December 2015; 41 (12): 1001–1005. https://doi.org/10.1063/1.4936671
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