EPR and dielectric spectroscopy of reorienting Cr<sup>3+</sup>-Li<sup>+</sup> pair centres in Li<sub>2</sub>Ge<sub>7</sub>O<sub>15</sub> crystal

EPR and dielectric spectroscopy of reorienting Cr<sup>3+</sup>-Li<sup>+</sup> pair centres in Li<sub>2</sub>Ge<sub>7</sub>O<sub>15</sub> crystal

Earlier it has been shown that in the lithium heptagermanate Li<sub>2</sub>Ge<sub>7</sub>O<sub>15</sub> structure the chromium doping ions substitute the germanium hosts and create Cr<sup>3+</sup>-Li<sup>+</sup> pair centres. In the paper E...

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Bibliographic Details
Main Authors:	M.D.Volnianskii, M.P.Trubitsyn, Yahia A.H. Obaidat
Format:	Article
Language:	English
Published:	Institute for Condensed Matter Physics 2007-01-01
Series:	Condensed Matter Physics
Subjects:	impurity ions electron paramagnetic resonance dielectric loss and relaxation
Online Access:	http://dx.doi.org/10.5488/CMP.10.1.75

Description
Summary:	Earlier it has been shown that in the lithium heptagermanate Li<sub>2</sub>Ge<sub>7</sub>O<sub>15</sub> structure the chromium doping ions substitute the germanium hosts and create Cr<sup>3+</sup>-Li<sup>+</sup> pair centres. In the paper EPR and dielectric spectra of Li<sub>2</sub>Ge<sub>7</sub>O<sub>15</sub>:Cr<sup>3+</sup> crystal are studied in the temperature range 300-500 K. The thermally activated reorientation of Cr<sup>3+</sup>-Li<sup>+</sup> pairs has been detected through EPR line width broadening and dielectric relaxation.
ISSN:	1607-324X