Electron paramagnetic resonance of PO 3 2? and SO 3 ? radicals in anhydrite, celestite and barite: the hyperfine structure and dynamics

1983 ◽  
Vol 10 (1) ◽  
pp. 21-26 ◽  
Author(s):  
I. D. Ryabov ◽  
L. V. Bershov ◽  
A. V. Speranskiy ◽  
I. G. Ganeev
2005 ◽  
Vol 60 (8-9) ◽  
pp. 615-618 ◽  
Author(s):  
Hui-Ning Dong

The gyromagnetic factors g∥, g⊥ and the hyperfine structure constants A∥ and A⊥ of the tetragonal Cu2+ center in KTaO3 are theoretically studied in this work. Based on the analyses of the electron paramagnetic resonance results of this center, it is found that the impurity Cu2+ occupies the octahedral Ta5+ site, associated with a nearest-neighbouring oxygen vacancy VO along the C4 axis. Due to the electrostatic repulsion of VO, Cu2+ is displaced away from VO by ΔZ(≈ −0.29 Å ) along the C4 axis. The theoretical values of the g and A factors based on the above defect structure and the impurity displacement agreee reasonably with the experimental data.


Open Physics ◽  
2012 ◽  
Vol 10 (2) ◽  
Author(s):  
Grzegorz Leniec ◽  
Tomasz Skibiński ◽  
Slawomir Kaczmarek ◽  
Przemyslaw Iwanowski ◽  
Marek Berkowski

AbstractGrowth conditions and electron paramagnetic resonance investigations of two well oriented KSm(WO4)2 and KEr(WO4)2 single crystals have been presented and discussed. Hyperfine structure of Sm3+ ion was detected and analyzed for angular and temperature dependences. EPR spectra of KEr(WO4)2 and its angular dependence showed the presence of 5 magnetically nonequivalent Er centers in the crystal. A change in the type of magnetic interactions was analyzed using mixed (Gaussian and Lorentzian) fits of the EPR spectra.


2008 ◽  
Vol 95 (1) ◽  
pp. 247-256 ◽  
Author(s):  
Yuri E. Nesmelov ◽  
Roman V. Agafonov ◽  
Adam R. Burr ◽  
Ralph T. Weber ◽  
David D. Thomas

Sign in / Sign up

Export Citation Format

Share Document