Characteristic temperatures of exchange biased systems

Alexey N. Dobrynin; Ruslan Prozorov

doi:10.1063/1.2769807

paper

Characteristic temperatures of exchange biased systems

arXiv:cond-mat/0612500 · doi:10.1063/1.2769807

Abstract

Characteristic temperatures in ferromagnetic - antiferromagnetic exchange biased systems are analyzed. In addition to usual blocking temperature of exchange bias $T_{B}$ , and the Néel temperature of an antiferromagnet $T_{N}$ , the inducing temperature $T_{in d}$ , i.e., the temperature, at which the direction of exchange anisotropy is established, has been recently proposed. We demonstrate that this temperature is in general case different from $T_{B}$ and $T_{N}$ . Physics and experimental approaches to measure the inducing temperature are discussed. Measurements of $T_{in d}$ , in addition to $T_{B}$ , and $T_{N}$ , provide important information about exchange interactions in ferromagnetic - antiferromagnetic heterostructures.