Paramagnetic Resonance and Relaxation of Trivalent Rare-Earth Ions in Calcium Fluoride. I. Resonance Spectra and Crystal Fields

1964 ◽  
Vol 134 (6A) ◽  
pp. A1492-A1503 ◽  
Author(s):  
M. J. Weber ◽  
R. W. Bierig
Keyword(s):  
Rare Earth ◽  
Calcium Fluoride ◽  
Rare Earth Ions ◽  
Paramagnetic Resonance ◽  
Crystal Fields ◽  
Trivalent Rare Earth

scholarly journals Lattice Location of Rare Earth Ions in Semiconductors: Interpretation and Limitations of Using g Values

2005 ◽  
Vol 866 ◽  
Author(s):  
David Carey
Keyword(s):  
Rare Earth ◽  
Crystal Field ◽  
Field Potential ◽  
Rare Earth Ions ◽  
Lattice Location ◽  
Paramagnetic Resonance ◽  
Cubic Symmetry ◽  
Crystal Fields ◽  
Valid Comparison ◽  
G Value

AbstractThe g values of rare earth ions obtained from either paramagnetic resonance or Zeeman measurements are often used to interpret the location and/or environment surrounding rare earth ions. In the case of centres with cubic symmetry the g value can be used to distinguish between substitutional and interstitial sites. For centres with less than cubic symmetry the average g value, taken as 1/3 trace of the g tensor, is often used as an indication of the lattice location and/or a measure of the strength of the local crystal field. This approach is widely used but is based on the assumption that the non-cubic terms in the total crystal field potential are small compared with the cubic crystal field. In this paper we have explored this assumption by calculating the principal g values in axial crystal fields for the Er3+ ion. We examine the limits over which the average g value approach is valid. Comparison is made with published results.

scholarly journals Spectroscopy of Ionic Crystals: The Hydrogenated Calcium Fluoride System

1979 ◽  
Vol 32 (6) ◽  
pp. 629 ◽  
Author(s):  
GD Jones
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Calcium Fluoride ◽  
Rare Earth Ions ◽  
Ionic Crystals ◽  
Fluoride System ◽  
Trivalent Rare Earth ◽  
Fluoride Crystals

This paper reviews the spectroscopy of ionic crystals, taking the system of hydrogenated calcium fluoride crystals containing trivalent rare earth ions as a specific example to illustrate the kinds of information that can be obtained by spectroscopic means. The discussion is primarily directed to solid state physicists who are not specialists in spectroscopy.

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