The origin of the structural phase transition in Gd 2 (MoO 4 ) 3 | Zendy

Dvořák V. | Zendy

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The origin of the structural phase transition in Gd 2 (MoO 4 ) 3

Author(s) -

Dvořák V.

Publication year - 1971

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.2220450115

Subject(s) - symmetry (geometry) , crystallography , phase transition , phase (matter) , chemistry , base (topology) , materials science , condensed matter physics , physics , mathematics , geometry , mathematical analysis , organic chemistry

The phase transition in Gd 2 (MoO 4 ) 3 at 159 °C is investigated on the base of symmetry changes using standard group‐theoretical methods. It is shown that a two‐dimensional representation exists with k = 1/2 ( b 1 + b 2 ) which induces a symmetry change from D 2 3 d to C 2 8 v and could be responsible for the phase transition. The appropriate form of the free energy is developed and compared with that proposed by Levanyuk and Sannikov [1].

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