Three first order magnetic phase transitions in re-entrant ferromagnet PrMn1.4Fe0.6Ge2

Authors

Rong Zeng, University of WollongongFollow
Jianli Wang, University of WollongongFollow
Lin Lu, University of WollongongFollow
Wenxian Li, University of WollongongFollow
Stewart J. Campbell, UNSWFollow
S X. Dou, University of WollongongFollow

RIS ID

33874

Publication Details

Zeng, R, Wang, J, Lu, L, Li, W, Campbell, SJ & Dou, SX (2010), Three first order magnetic phase transitions in re-entrant ferromagnet PrMn1.4Fe0.6Ge2, Journal of Alloys and Compounds, 505(2), pp. L38-L42.

Abstract

Three first order magnetic phase transitions (FOMTs) have been detected and evaluated over the temperature range from 5 to 340 K at fields up to 9 T in PrMn_1.4Fe_0.6Ge₂. All three FOMTs, from (with decreasing temperature) an antiferromagnetic (AFl) to a c-axis canted ferromagnetic (Fmc) state, to a c-axis canted antiferromagnetic (AFmc) state, and then to an Fmc state plus an additional Pr-sublattice magnetic contribution (Fmc + F(Pr)), exhibited temperature and field-induced transition features. A interesting phenomenon was observed, in that magnetic field can induce an AFmc to Fmc + F(Pr) transition, and then diminish and finally eliminate the re-entrant magnetic transition behavior under high field as well. Based on systematic measurements and analysis, a magnetic phase diagram has been determined.

Grant Number

ARC/DP0879070

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0879070