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2000 (1)
1Author    Wen-Chen Zheng, Shao-Yi WuRequires cookie*
 Title    Studies of the Local Phase-transition Behaviour for Ni + -II Centers in RbCaF 3 Crystal from EPR Data  
 Abstract    By fitting the calculated EPR g,(i = JC, y, z) factors to the observed values, the local release factor which is introduced to characterize the release (or elongation) effect of impurity-ligand bonds along the rotational axis in the cubic-to-tetragonal phase transition of ABX 3 perovskites, is obtained for the Ni + -II center in RbCaF 3 crystal. The result shows that, similar to the local rotational angle (or order param-eter) (p, the local release factor is unlike that of the host crystal. It suggests that in the doped crystal the impurity can affect the local phase transition behaviour in the vicinity of impurity ions. 
  Reference    Z. Naturforsch. 55a, 915—917 (2000); received September 12 2000 
  Published    2000 
  Keywords    Local Phase Transition Behaviour, E P R, Crystal-field Theory, Ni + ion, RbCaF 3 PACS: 6470Kb, 7630Fc, 7170Ch 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0915.pdf 
 Identifier    ZNA-2000-55a-0915 
 Volume    55