Stable remanence and memory of multi-domain materials with special reference to magnetite

摘要: Abstract The characteristics of memory remanence across the so-called isotropic point (TK ) in single crystals magnetite are demonstrated experimentally. Memory is shown to be related highest microscopic coercivity fraction crystal. In order investigate nature magnetically hard fraction, studies as a function state internal stress were undertaken with nickel and cobalt. They revealed sensitivity transition stress. A simple model proposed which invokes magneto-elastic control domain configuration vicinity TK . nucleation considered controlled by local fluctuations wall energy due centres. Features also used interpret role thermo-remanent magnetization multi-domain materials. It theoretically that sources pinning unlikel...