Influence of the Fine and Hyperfine Structure Terms on the Electron Paramagnetic Resonance Spectra of Polycrystalline Solids

1993 ◽  
Vol 177 (2) ◽  
pp. 501-505
Author(s):  
J.-Cl. Bissey ◽  
J. Lissayou ◽  
P. Beziade ◽  
R. Berger ◽  
Y. Servant
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Hyperfine Structure ◽  
Paramagnetic Resonance ◽  
Polycrystalline Solids ◽  
Electron Paramagnetic ◽  
Fine And Hyperfine Structure

Theoretical Studies on the Gyromagnetic Factors and the Hyperfine Structure Constants for the Tetragonal Copper Center in KTaO3

2005 ◽  
Vol 60 (8-9) ◽  
pp. 615-618 ◽  
Author(s):  
Hui-Ning Dong
Keyword(s):  
Experimental Data ◽  
Electron Paramagnetic Resonance ◽  
Hyperfine Structure ◽  
Defect Structure ◽  
Electrostatic Repulsion ◽  
Theoretical Studies ◽  
Paramagnetic Resonance ◽  
Copper Center ◽  
Structure Constants ◽  
Electron Paramagnetic

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.

Growth and EPR properties of KSm(WO4)2 and KEr(WO4)2 single crystals

Open Physics ◽  
2012 ◽  
Vol 10 (2) ◽  
Author(s):  
Grzegorz Leniec ◽  
Tomasz Skibiński ◽  
Slawomir Kaczmarek ◽  
Przemyslaw Iwanowski ◽  
Marek Berkowski
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Hyperfine Structure ◽  
Single Crystals ◽  
Angular Dependence ◽  
Growth Conditions ◽  
Magnetic Interactions ◽  
Epr Spectra ◽  
Paramagnetic Resonance ◽  
Temperature Dependences ◽  
Electron Paramagnetic

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.

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