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Critical behavior of multiferroic hexagonal R MnO 3
Author(s) -
Bahoosh S. G.,
Wesselinowa J. M.
Publication year - 2012
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.201248297
Subject(s) - multiferroics , critical exponent , condensed matter physics , hexagonal crystal system , magnetization , scaling , materials science , scaling law , critical field , critical phenomena , function (biology) , physics , ferroelectricity , magnetic field , mathematics , chemistry , phase transition , crystallography , quantum mechanics , superconductivity , geometry , optoelectronics , evolutionary biology , biology , dielectric
Abstract Using a microscopic model and a Green's function technique we have studied the critical behavior of some multiferroics such as hexagonal R MnO 3 . The temperature dependence and the external field dependence of the magnetization and susceptibility are determined. The critical exponents β and γ are calculated. Applying the scaling laws α , δ , and ν are also obtained. The critical exponents are in very good agreement with the existing experimental data.