AN EPR STUDY OF LOCAL FLUCTUATIONS IN THE VICINITY OF THE FERROELECTRIC PHASE-TRANSITION IN LI2GE7O15

Authors
TRUBITSYN MP VOLNYANSKII MD KUDZIN AY KUZMENKO TL
Citation
Mp. Trubitsyn et al., AN EPR STUDY OF LOCAL FLUCTUATIONS IN THE VICINITY OF THE FERROELECTRIC PHASE-TRANSITION IN LI2GE7O15, Physics of the solid state, 40(1), 1998, pp. 98-100
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physics of the solid state → ACNP
ISSN journal
10637834
Volume
40
Issue
1
Year of publication
1998
Pages
98 - 100
Database
ISI
SICI code
1063-7834(1998)40:1<98:AESOLF>2.0.ZU;2-J
Abstract
EPR spectra of Mn2+ ions have been studied in the temperature interval containing the ferroelectric transition in crystalline lithium heptag ermanate Li2Ge7O15. The EPR linewidth and shape were measured as funct ions of temperature and orientation. It is shown that the critical res onance-line broadening observed to occur in the vicinity of the phase transition is due to fluctuations in the local order parameter with fr equencies below 10(7) Hz. (C) 1998 American Institute of Physics.