Photoinduced Effects in EPR Spectra of Copper Doped Potassium Tantalate

2006 ◽  
Vol 514-516 ◽  
pp. 138-141
Author(s):  
Andréy G. Badalyan ◽  
Carlo B. Azzoni ◽  
Pietro Galinetto ◽  
Maria Cristina Mozzati ◽  
Lubomir Jastrabik ◽  
...  
Keyword(s):  
Single Crystals ◽  
Resonance Method ◽  
Paramagnetic Resonance ◽  
Potassium Tantalate ◽  
Electron Paramagnetic Resonance Method ◽  
Uv Illumination ◽  
Impurity Ions ◽  
Epr Signal ◽  
Electron Paramagnetic ◽  
Sizeable Increase

The UV illumination effects in KTaO3 single crystals with Cu2+ impurity ions have been studied by electron paramagnetic resonance method. Single crystals both “as-grown” and thermally treated in oxygen atmosphere were investigated. It was found that the EPR signal of the Cu2+ centers decreases in the “as-grown” crystals during UV-irradiation at 365 nm, in the wholeinvestigated temperature range (3.7- 300 K). On the contrary, for the oxidized specimens a sizeable increase of the EPR signal of Cu2+ centers (except the signal from exchange coupled pair centers) is observed under UV illumination in some temperature regions.

Electron paramagnetic resonance of copper centres in potassium tantalate single crystals

2002 ◽  
Vol 14 (27) ◽  
pp. 6855-6863 ◽  
Author(s):  
A G Badalyan ◽  
P G Baranov ◽  
D V Azamat ◽  
V A Trepakov ◽  
C B Azzoni ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Single Crystals ◽  
Paramagnetic Resonance ◽  
Potassium Tantalate ◽  
Electron Paramagnetic

Research on Alumina and Other Nanopowders by Electron Paramagnetic Resonance Method

2010 ◽  
Vol 5 (1) ◽  
pp. 97-101
Author(s):  
Sergey P. Bardakhanov ◽  
Aleksandr M. Volodin ◽  
Konstantin V. Zobov ◽  
Roman M. Kenzhin ◽  
Vladimir I. Lysenko
Keyword(s):  
Experimental Study ◽  
Electron Paramagnetic Resonance ◽  
Resonance Method ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Method ◽  
Electron Paramagnetic ◽  
Surface Donor

The paper is devoted to experimental study of alumina and other nanopowders by electron paramagnetic resonance method. The experiments have showed the surface donor centers for ZrO2 + MgO (9 % mol.) and Al2O3 samples. The influence of Fe(3+) dirt was determined in glacial Al2O3 liquid melt, but Al2O3 nanopowder was free from this impurity. The Cr(5+) dirt were found in ZrO2 + MgO (9 % mol.) nanopowder sample.

Probing electron transfer between hemin and riboflavin using a combination of analytical approaches and theoretical calculations

2017 ◽  
Vol 19 (48) ◽  
pp. 32580-32588 ◽  
Author(s):  
Wen-Lan Wang ◽  
Yuan Min ◽  
Sheng-Song Yu ◽  
Wei Chen ◽  
Jie-Jie Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Theoretical Calculations ◽  
Resonance Method ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Method ◽  
Proton Coupled Electron Transfer ◽  
Analytical Approaches ◽  
Electron Paramagnetic ◽  
Transfer Mechanisms

Proton-coupled electron transfer mechanisms of riboflavin bound hemin in aqueous solution are elucidated by spectroelectrochemical analysis, the electron paramagnetic resonance method and theoretical calculations.

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