Low Temperature Physics: 44, 341 (2018); https://doi.org/10.1063/1.5030462
Fizika Nizkikh Temperatur: Volume 44, Number 4 (April 2018), p. 449-454    ( to contents , go back )

Crystalline phase detection in glass ceramics by EPR spectroscopy

A. Antuzevics, U. Rogulis, A. Fedotovs, and A.I. Popov

Institute of Solid State Physics, University of Latvia, 8 Kengaraga, LV-1069 Riga, Latvia
E-mail: andris.antuzevics@gmail.com

Received September 17, 2017

Abstract

The advances of EPR spectroscopy for the detection of activators as well as determining their local structure in the crystalline phase of glass ceramics is considered. The feasibility of d-element (Mn2+, Cu2+) and f-element(Gd3+, Eu2+) ion probes for the investigation of glass ceramics is discussed. In the case of Mn2+, the informationis obtained from the EPR spectrum superhyperfine structure, for Gd3+ and Eu2+ probes – from the EPR spectrum fine structure, whereas for Cu2+ ions the changes in the EPR spectrum shape could be useful. The examples of EPR spectra of the above-mentioned probes in oxyfluoride glass ceramics are illustrated.

PACS: 76.30.–v Electron paramagnetic resonance and relaxation;
PACS: 61.72.Hh Indirect evidence of dislocations and other defects.

Key words: electron paramagnetic resonance, paramagnetic ions, glass ceramics.

Published online: February 26, 2018

Download 2340191 byte View Contents