title: Changes of physical properties in multiferroic phase transitions.
abstract: The physical property coefficients that arise in a phase transition which are zero in the high-symmetry phase and nonzero in the low-symmetry phase are called spontaneous coefficients. For all 1601 Aizu species of phase transitions, matrices have been constructed which show the nonzero coefficients of a wide variety of magnetic and nonmagnetic physical properties including toroidal property coefficients in the high-symmetry phase and their corresponding spontaneous coefficients in the low-symmetry phase. It is also shown that these spontaneous coefficients provide for the distinction of and switching between nonferroelastic domain pairs.
authors.affiliation: Department of Physics, The Eberly College of Science, The Pennsylvania State University, Penn State Berks, PO Box 7009, Reading, Pennsylvania 19610, USA.
authors.forename: Daniel B
authors.initials: DB
authors.lastname: Litvin
keywords: Aizu species; nonferroelastic domain pair; physical properties; spontaneous coefficients