Paramagnetic platinum centres in paratellurite
- 30 July 1987
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 20 (21) , 3155-3160
- https://doi.org/10.1088/0022-3719/20/21/014
Abstract
In TeO2 single crystals grown in Pt crucibles a new orthorhombic paramagnetic Pt-related centre was observed. From the analysis of the ESR spectra it was concluded that it is a Pt3+ impurity ion on an undistorted Te4+ site with gxx=2.5976, gyy=2.0996, gzz=1.9388 and that the 195Pt hyperfine principal values (in 10-4 cm-1) are Axx=191,Ayy=69 and Azz=46. On the basis of the properties of this centre it could be proposed that the model for another Pt-related centre observed earlier in electron irradiated TeO2 is a V0 centre with a Pt4+ in a next-nearest position.Keywords
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