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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:105 Issue:7 Help

Electronic structures and magnetic properties of RB4 (R=Yb,Pr,Gd,Tb,Dy)

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5 Author(s)
Choi, H.C. ; Department of Physics, PCTP, Pohang University of Science and Technology, Pohang 790-784, Korea ; Laref, Amel ; Shim, J.H. ; Kwon, S.K.
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Most rare-earth tetraborides RB4 have antiferromagnetic ground states except for YbB4 and PrB4. We have investigated the electronic structures and magnetic properties of RB4 (R=Yb,Pr,Gd,Tb,Dy) employing the first-principles total energy band method. It is found that YbB4 has the paramagnetic ground state, while the other tetraborides are in the magnetic ground state, which is in agreement with experiments. We have obtained the spin and orbital magnetic moments and discussed the importance of the spin-orbit interaction and the on-site Coulomb repulsion (U) in these systems.

Published in:
Journal of Applied Physics  (Volume:105 ,  Issue: 7 )

Date of Publication: Apr 2009

Page(s):
07E107 - 07E107-3
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.3058707
Product Type:
Journals & Magazines
Date of Current Version :
24 June 2009
Issue Date :
Apr 2009

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