EFFECT OF CHARGE COMPENSATION IN CALCIUM TUNGSTATE: YTTERBIUM,
Abstract
The paramagnetic resonance spectra of CaWO4:Yb have been examined in single crystals grown from melts containing sodium, niobium, and no impurity for charge compensation. To varying extents all crystals showed the presence of Yb(3+) ions in sites with several types of local symmetry. In the sample gorwn from a melt containing a ratio of sodium to ytterbium of eight to one, approximately 71 percent of the Yb(3+) ions occupy sites with tetragonal symmetry. It is concluded that the structure observed in the optical spectra of this crystal may be due to Yb(3+) in lower symmetry sites. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1967
- Accession Number
- AD0651342
Entities
People
- J. Nemarich
- W. Viehmann
Organizations
- Harry Diamond Laboratories