TEMPERATURE-INDUCED CHANGES OF CLUSTER BUBBLE-DOMAIN LATTICES IN FERRITE-GARNET FILMS

Temperature-induced phase transitions in the 'cluster' magnetic bubble lattices on thin ferrite-garnet films were investigated. The term 'cl uster' magnetic bubble lattice is used to denote a structure containin g a large number of disoriented hexagonal lattice clusters. To explain discontinuous and continuous transitions from the cluster lattice to the structure consisting of two phases (stripes and lattices), the the rmodynamic method was used. Transition temperatures were calculated an d showed good agreement with experimental results.