Journal of Magnetism and Magnetic Materials, volume 513, pages 167226
Unusual magnetic properties and thermal expansion in chromium pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd
Publication type: Journal Article
Publication date: 2020-11-01
Quartile SCImago
Q2
Quartile WOS
Q3
Impact factor: 2.7
ISSN: 03048853
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
Abstract New complex Cr-containing pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd, were synthesized. The Rietveld refinement of the Ln2CrTaO7 composition confirmed the pyrochlore type of the structure. The Cr3+ oxidation state is corroborated by XANES spectra. The detailed study of DC and AC magnetization of Ln2CrTaO7, Ln = Y, Sm, Gd, was carried out in the temperature range 2–300 K and magnetic field up to 5 T. FM phase transitions at 143, 192, and 163 K were observed in pyrochlores with Y, Sm, and Gd, respectively. It is shown that these transitions are due to canted antiferromagnetism or weak-ferromagnetism in the Ln2CrTaO7 pyrochlores. AFM interactions between Ln- and Cr-sublattices in Sm2CrTaO7 and Gd2CrTaO7 causes AFM transition at T = 42 K, after which magnetization continues increasing. Unusual magnetic properties were observed for Gd2CrTaO7 at low temperatures. Competitive FM and AFM interactions in Cr-and Gd-sublattice give rise to the occurrence of reentrant spin glass at T
Citations by journals
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Russian Journal of Inorganic Chemistry
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Russian Journal of Inorganic Chemistry
2 publications, 50%
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Mendeleev Communications
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Mendeleev Communications
1 publication, 25%
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Citations by publishers
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Pleiades Publishing
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Pleiades Publishing
2 publications, 50%
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Elsevier
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Elsevier
1 publication, 25%
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Egorysheva A. et al. Unusual magnetic properties and thermal expansion in chromium pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd // Journal of Magnetism and Magnetic Materials. 2020. Vol. 513. p. 167226.
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Egorysheva A., Ellert O., Kirdyankin D. I., Popova E. F., Svetogorov R. D., Svetogorov R. Unusual magnetic properties and thermal expansion in chromium pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd // Journal of Magnetism and Magnetic Materials. 2020. Vol. 513. p. 167226.
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TY - JOUR
DO - 10.1016/j.jmmm.2020.167226
UR - https://doi.org/10.1016%2Fj.jmmm.2020.167226
TI - Unusual magnetic properties and thermal expansion in chromium pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd
T2 - Journal of Magnetism and Magnetic Materials
AU - Egorysheva, Anna
AU - Ellert, O.G
AU - Kirdyankin, D I
AU - Popova, E F
AU - Svetogorov, R D
AU - Svetogorov, Roman
PY - 2020
DA - 2020/11/01 00:00:00
PB - Elsevier
SP - 167226
VL - 513
SN - 0304-8853
ER -
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@article{2020_Egorysheva,
author = {Anna Egorysheva and O.G Ellert and D I Kirdyankin and E F Popova and R D Svetogorov and Roman Svetogorov},
title = {Unusual magnetic properties and thermal expansion in chromium pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd},
journal = {Journal of Magnetism and Magnetic Materials},
year = {2020},
volume = {513},
publisher = {Elsevier},
month = {nov},
url = {https://doi.org/10.1016%2Fj.jmmm.2020.167226},
pages = {167226},
doi = {10.1016/j.jmmm.2020.167226}
}