Time relaxation of the magnetization in a single-domain TmBa2Cu3O7-δ single crystal
Gippius A. A. , Moshchalkov V. V., Ho Hiu Nyan, Voronkova V. I. , Yanovskii V. K.
The time relaxation of the residual magnetization RM (t) in a single-domain single crystal of TmBa2Cu307 _ Ê is studied. The relaxation rate r = JRM(i)/i/(lni) has a sharp maximum at 7"ÔÁÈ {Η = 2.8 ËïÅ) ~ 15 ë. Although the quantity r{ T) is strongly anisotropic, its anisotropy is suppressed almost completely when it is normalized to the initial magnetization.