Materials Research Bulletin, Vol.47, No.11, 3243-3248, 2012
Magnetization reversal in TmCrO3
The perovskite chromite TmCrO3 shows magnetization reversal at two temperatures. The reversal at similar to 28 K is attributed to the antiparallel coupling between Tm3+ and Cr3+ moments, while that at the lower temperature (similar to 6-7 K) is rooted in a rotation of the magnetic moments. Magnetocaloric measurements offer a relatively large entropy change (similar to 4-5 J kg(-1) K-1) at the lower temperature. The reversal at similar to 28 K is accompanied by a sign change of an exchange-bias-like field. The absence of the training effect suggests that this behavior is rooted in unidirectional magnetic anisotropy. The existence of the two magnetization reversals offers the characteristic switching of magnetization. For example, the magnetization is flipped without changing the direction of the applied magnetic field. (C) 2012 Elsevier Ltd. All rights reserved.