scholarly journals Direct determination of the crystal field parameters of Dy, Er, and Yb impurities in the skutterudite compoundCeFe4P12by electron spin resonance

2008 ◽  
Vol 78 (17) ◽  
Author(s):  
D. J. Garcia ◽  
F. A. Garcia ◽  
J. G. S. Duque ◽  
P. G. Pagliuso ◽  
C. Rettori ◽  
...  
1971 ◽  
Vol 49 (8) ◽  
pp. 995-1003 ◽  
Author(s):  
J. S. M. Harvey ◽  
H. Kiefte

The spin-Hamiltonian parameters for Gd3+ in CaWO4 have been measured by the method of electron spin resonance at a number of temperatures between 4.2 °K and 300 °K. The results at 78 °K are in agreement with previous measurements by Hempstead and Bowers.The variations in the crystal-field parameters are interpreted in terms of a limiting low temperature value and a normalized slope at the Debye temperature for each parameter. These quantities are compared with the corresponding quantities for Eu2+ in CaWO4 and, in the case of the fourth-order parameters, for Eu2+ and Gd3+ in cubic CaF2, SrF2, and BaF2. We conclude that the second- and fourth-order splittings each arise from at least three competing mechanisms and that these include a dependence on the amplitude of lattice vibrations. In the case of the trivalent ion, Coulomb forces are also considered to be important.


2011 ◽  
Vol 12 (4) ◽  
pp. 716-723 ◽  
Author(s):  
Shun-ichiro Watanabe ◽  
Hisaaki Tanaka ◽  
Hiroshi Ito ◽  
Shin-ichi Kuroda ◽  
Tatsuo Mori ◽  
...  

1990 ◽  
Vol 41 (4) ◽  
pp. 2046-2048 ◽  
Author(s):  
Horacio A. Farach ◽  
Eduardo Quagliata ◽  
Taha Mzoughi ◽  
Manuel A. Mesa ◽  
Charles P. Poole ◽  
...  

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