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Order Parameter Symmetry for the β–γ Transition in Pb 3 (VO 4 ) 2
Author(s) -
Hatch D. M.
Publication year - 1981
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.2221060207
Subject(s) - symmetry (geometry) , phase transition , representation (politics) , order (exchange) , function (biology) , condensed matter physics , physics , mathematical physics , landau theory , transition point , energy (signal processing) , mathematics , statistical physics , thermodynamics , quantum mechanics , geometry , finance , evolutionary biology , politics , political science , law , economics , biology
The 100 °C phase transition in Pb 3 (VO 4 ) 2 is theoretically described. The description is in terms of the Landau group theoretical formulation as extended by Birman and Jari°C. Representations from the F point are constructed from which the representation that induces the transition is identified. It is found that this representation satisfies the necessary conditions for a continuous transition. The free energy form consistent with the phase of higher symmetry is constructed as a function of the order parameter and elastic strain.