ESR STUDY OF THE PHASE-TRANSITION SEQUENCE IN BETAINE PHOSPHITE

Authors
POPPL A VOLKEL G METZ H KLOPPERPIEPER A
Citation
A. Poppl et al., ESR STUDY OF THE PHASE-TRANSITION SEQUENCE IN BETAINE PHOSPHITE, Physica status solidi. b, Basic research, 184(2), 1994, pp. 471-482
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. b, Basic research → ACNP
ISSN journal
03701972
Volume
184
Issue
2
Year of publication
1994
Pages
471 - 482
Database
ISI
SICI code
0370-1972(1994)184:2<471:ESOTPS>2.0.ZU;2-S
Abstract
The structure of the PO32- radical is examined by ESR spectroscopy in gamma-irradiated betaine phosphite. The ESR spectra of the PO32- radic al indicate two phase transitions of betaine phosphite at T(c1) = 355 K and T(c2) = 216 K. The symmetry of the ESR spectra of the PO32- cent er in the paraelastic, antiferrodistortive, and ferroelectric phases o f betaine phosphite is in accordance with the space groups P2(1)/m, P2 (1)/c, and P2(1).