December 2018

Journal

Unexpected magnetism, Griffiths phase, and exchange bias in the mixed lanthanide Pr0.6Er0.4Al2

By:
Pathak, Arjun; Paudyal, D; Jayasekara, Wageesha T; Calder, Stuart A; Kreyssig, Andreas ; Goldman, Alan I; Gschneider, K; Pecharsky, V.
Journal Name:
Physical Review B
Page Number:
224411
Volume:
89
Issue Number:
22
Publication Date:
December 12, 2018
View DOI Listing:
https://doi.org/10.1103/PhysRevB.89.224411

Abstract

We report an unusual coexistence of ferromagnetism and ferrimagnetism, and metamagnetism in Pr0.6Er0.4Al2. In addition, this compound retains a clear Griffiths phase behavior even at 1 kOe magnetic field and shows a large exchange bias after field cooling from the paramagnetic state. The crystal-field excitations and opposite exchange interactions between nearest-neighbor and next-nearest-neighbor rare earth sites explain these behaviors.


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