Re-entrant spin glass behavior in Mn-rich YMnO3.

Authors :: Chen, W. R.
Zhang, F. C.
Miao, J.
Xu, B.
Dong, X. L.
Cao, L. X.
Qiu, X. G.
Zhao, B. R.
Dai, Pengcheng
Source :: Applied Physics Letters. 7/25/2005, Vol. 87 Issue 4, p042508. 3p. 4 Graphs.
Publication Year :: 2005
Abstract: We use magnetism and specific heat measurements to investigate the hexagonal Mn-rich YMnO3. It is found that upon cooling from a high temperature, the compound first orders antiferromagnetically at TN∼72 K and then undergoes a re-entrant spin glass (RSG) transition at TSG∼42 K. This RSG behavior results from the competition between the ferromagnetic interaction and the antiferromagnetic interaction, which is related to the intrinsic geometric magnetic frustration in this system. [ABSTRACT FROM AUTHOR]