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Title: Crystal and magnetic structures of Cr{sub 1∕3}NbSe{sub 2} from neutron diffraction

Abstract

Neutron diffraction measurements of the Cr intercalated niobium diselenide Cr{sub 1∕3}NbSe{sub 2} together with magnetization measurements have revealed that this compound exhibits ferromagnetic ordering below T{sub C} = 96 K unlike a chiral helimagnetic order observed in the sulfide compound Cr{sub 1∕3}NbS{sub 2}. As derived from neutron diffraction data, the Cr magnetic moments μ{sub Cr} = 2.83 ± 0.03 μ{sub B} in Cr{sub 1∕3}NbSe{sub 2} are aligned within basal plane. The discrepancy in the magnetic states of Cr{sub 1∕3}NbS{sub 2} and Cr{sub 1∕3}NbSe{sub 2} is ascribed to the difference in the preferential site occupation of Cr ions in crystal lattices. In Cr{sub 1∕3}NbSe{sub 2}, the Cr ions are predominantly distributed over 2b Wyckoff site, which determines a centrosymmetric character of the crystal structure unlike Cr{sub 1∕3}NbS{sub 2}, where the Cr ions are mainly located in 2c position and the crystal structure is non-centrosymmetric.

Authors:
 [1]; ; ;  [2]; ;  [3]; ; ; ;  [4];  [4];  [4];  [5]
  1. M.N. Miheev Institute of Metal Physics, Russian Academy of Sciences, 620990 Yekaterinburg (Russian Federation)
  2. Institute of Natural Sciences, Ural Federal University, 620083 Yekaterinburg (Russian Federation)
  3. Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan)
  4. Institute of Materials Structure Science, KEK, Tokai, Ibaragi 319-1106 (Japan)
  5. Aragón Materials Science Institute (CSIC - University of Zaragoza), 50009 Zaragoza (Spain)
Publication Date:
OSTI Identifier:
22494851
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 119; Journal Issue: 1; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHROMIUM IONS; CLATHRATES; CRYSTAL LATTICES; CRYSTALS; MAGNETIC MOMENTS; MAGNETIZATION; NEUTRON DIFFRACTION; NIOBIUM; SULFIDES

Citation Formats

Gubkin, A. F., E-mail: agubkin@imp.uran.ru, Baranov, N. V., Institute of Natural Sciences, Ural Federal University, 620083 Yekaterinburg, Proskurina, E. P., Sherokalova, E. M., Selezneva, N. V., Kousaka, Y., Akimitsu, J., Center for Chiral Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Miao, P., Lee, S., Ishikawa, Y., Torii, S., Zhang, J., China Spallation Neutron Source, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, Guangdong, Kamiyama, T., Sokendai, and Campo, J. Crystal and magnetic structures of Cr{sub 1∕3}NbSe{sub 2} from neutron diffraction. United States: N. p., 2016. Web. doi:10.1063/1.4939558.
Gubkin, A. F., E-mail: agubkin@imp.uran.ru, Baranov, N. V., Institute of Natural Sciences, Ural Federal University, 620083 Yekaterinburg, Proskurina, E. P., Sherokalova, E. M., Selezneva, N. V., Kousaka, Y., Akimitsu, J., Center for Chiral Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Miao, P., Lee, S., Ishikawa, Y., Torii, S., Zhang, J., China Spallation Neutron Source, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, Guangdong, Kamiyama, T., Sokendai, & Campo, J. Crystal and magnetic structures of Cr{sub 1∕3}NbSe{sub 2} from neutron diffraction. United States. doi:10.1063/1.4939558.
Gubkin, A. F., E-mail: agubkin@imp.uran.ru, Baranov, N. V., Institute of Natural Sciences, Ural Federal University, 620083 Yekaterinburg, Proskurina, E. P., Sherokalova, E. M., Selezneva, N. V., Kousaka, Y., Akimitsu, J., Center for Chiral Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Miao, P., Lee, S., Ishikawa, Y., Torii, S., Zhang, J., China Spallation Neutron Source, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, Guangdong, Kamiyama, T., Sokendai, and Campo, J. Thu . "Crystal and magnetic structures of Cr{sub 1∕3}NbSe{sub 2} from neutron diffraction". United States. doi:10.1063/1.4939558.
@article{osti_22494851,
title = {Crystal and magnetic structures of Cr{sub 1∕3}NbSe{sub 2} from neutron diffraction},
author = {Gubkin, A. F., E-mail: agubkin@imp.uran.ru and Baranov, N. V. and Institute of Natural Sciences, Ural Federal University, 620083 Yekaterinburg and Proskurina, E. P. and Sherokalova, E. M. and Selezneva, N. V. and Kousaka, Y. and Akimitsu, J. and Center for Chiral Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 and Miao, P. and Lee, S. and Ishikawa, Y. and Torii, S. and Zhang, J. and China Spallation Neutron Source, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, Guangdong and Kamiyama, T. and Sokendai and Campo, J.},
abstractNote = {Neutron diffraction measurements of the Cr intercalated niobium diselenide Cr{sub 1∕3}NbSe{sub 2} together with magnetization measurements have revealed that this compound exhibits ferromagnetic ordering below T{sub C} = 96 K unlike a chiral helimagnetic order observed in the sulfide compound Cr{sub 1∕3}NbS{sub 2}. As derived from neutron diffraction data, the Cr magnetic moments μ{sub Cr} = 2.83 ± 0.03 μ{sub B} in Cr{sub 1∕3}NbSe{sub 2} are aligned within basal plane. The discrepancy in the magnetic states of Cr{sub 1∕3}NbS{sub 2} and Cr{sub 1∕3}NbSe{sub 2} is ascribed to the difference in the preferential site occupation of Cr ions in crystal lattices. In Cr{sub 1∕3}NbSe{sub 2}, the Cr ions are predominantly distributed over 2b Wyckoff site, which determines a centrosymmetric character of the crystal structure unlike Cr{sub 1∕3}NbS{sub 2}, where the Cr ions are mainly located in 2c position and the crystal structure is non-centrosymmetric.},
doi = {10.1063/1.4939558},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 1,
volume = 119,
place = {United States},
year = {2016},
month = {1}
}