Crystal-field effects in the electron-spin resonance ofGd3+andEr3+inPr2CuO4

1991 ◽  
Vol 44 (2) ◽  
pp. 826-829 ◽  
Author(s):  
C. Rettori ◽  
D. Rao ◽  
S. Oseroff ◽  
R. D. Zysler ◽  
M. Tovar ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Crystal Field ◽  
Electron Spin ◽  
Field Effects ◽  
Spin Resonance

scholarly journals Electron‐spin resonance studies of the titanium cation (Ti+,3d3,4F) in rare gas matrices at 4 K: A crystal field interpretation

1996 ◽  
Vol 105 (13) ◽  
pp. 5331-5340 ◽  
Author(s):  
Lon B. Knight ◽  
Keith A. Keller ◽  
Robert M. Babb ◽  
Michael D. Morse
Keyword(s):  
Electron Spin Resonance ◽  
Crystal Field ◽  
Electron Spin ◽  
Rare Gas ◽  
Spin Resonance

Temperature Dependence of the Crystal-Field Splittings in Gd3+:CaWO4

1971 ◽  
Vol 49 (8) ◽  
pp. 995-1003 ◽  
Author(s):  
J. S. M. Harvey ◽  
H. Kiefte
Keyword(s):  
Electron Spin Resonance ◽  
Low Temperature ◽  
Crystal Field ◽  
Electron Spin ◽  
Fourth Order ◽  
Lattice Vibrations ◽  
Spin Hamiltonian ◽  
Spin Resonance ◽  
Crystal Field Parameters ◽  
Hamiltonian Parameters

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.

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