ESR Study of the Phase Transition Sequence in Betaine Phosphite | Zendy

Pöppl A. | Zendy; Völkel G. | Zendy; Metz H. | Zendy; Klöpperpieper A. | Zendy

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ESR Study of the Phase Transition Sequence in Betaine Phosphite

Author(s) -

Pöppl A.,

Völkel G.,

Metz H.,

Klöpperpieper A.

Publication year - 1994

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221840221

Subject(s) - betaine , phase transition , chemistry , phase (matter) , spectral line , crystallography , materials science , condensed matter physics , physics , organic chemistry , astronomy

The structure of the PO 3 2−radical is examined by ESR spectroscopy in γ‐irradiated betaine phosphite. The ESR spectra of the PO 3 2−radical 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 PO 3 2−center in the paraelastic, antiferrodistortive, and ferroelectric phases of betaine phosphite is in accordance with the space groups P2 1 /m, P2 1 /c, and P2 1 .

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