Open AccessSYMMETRY THEORY OF THE MAGNETIC PHASE TRANSITION OF FeRh ALLOY
Author(s) -
Zhong Li-Jun,
Ruibao Tao
Publication year - 1992
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.41.2003
Subject(s) - condensed matter physics , symmetry (geometry) , unitary state , phase transition , alloy , ferroics , phase (matter) , materials science , representation (politics) , order (exchange) , function (biology) , physics , quantum phase transition , quantum mechanics , quantum critical point , mathematics , law , geometry , finance , political science , economics , evolutionary biology , politics , composite material , biology
The formula of the Molien function in the case of corepresentation is derived by application of the symmetry theory for second order phase transition to magnetic systems, it is different from that of unitary groups. The analysis of the magnetic phase transition of FeRh alloy shows that eqivalent representation in the sense of corepresentation may lead to different symmetry breaking for the reason of none-quivalent characters. The result that a continuous magnetic phase transition Oh1⊕θOh1→C4v1⊕θ[D4h1-C4v1] exists theoretically is supported by experiments.