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2008 | 113 | 1 | 503-506
Article title

Magnetic Exchange Interactions and Estimation of T_N in CsNiF_3 from First Principles

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EN
Abstracts
EN
The CsNiF_3 has been for long time studied as a prototype of quasi-1D planar ferromagnetic system. At very low temperature the studied system is insulator and therefore the magnetic exchange interactions should decay very rapidly. We treated the magnetic exchange coupling within the Heisenberg model for the nearest neighbor interaction between the anti-ferromagnetically coupled Ni-chains. The influence of up to the second-nearest neighbors on the ferromagnetic exchange coupling along the Ni-chains was determined. The exchange interactions were calculated for the experimental volume by the density functional theory, within the all-electron approach using the local density approximation for the exchange and correlation. The Néel temperature was calculated by means of the mean-field theory and by the random-phase approximation method.
Keywords
EN
Publisher

Year
Volume
113
Issue
1
Pages
503-506
Physical description
Dates
published
2008-01
received
2007-07-09
Contributors
author
  • Institute of Physics of Materials, Academy of Sciences, Žižkova 22, 616 68 Brno, Czech Republic
  • Department of Physics, Uppsala University, P.O. Box 530, 751 21 Uppsala, Sweden
author
  • Department of Physics, Uppsala University, P.O. Box 530, 751 21 Uppsala, Sweden
  • Institute of Physics, Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1123kz
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