Compensation temperatures and hysteresis behaviors of a graphene-like trilayer
Ying An, Ji Liang, Wei Wang, Mei-mei Du, Feng-ge Zhang
Abstract
Abstract This work focuses on the ground-state phase diagram, the compensation temperatures and the critical behaviors of a ferrimagnetic graphene-like trilayer induced by crystal fields and exchange couplings. The simulation results show that a negative decrease in crystal field or an increase in exchange coupling can increase the critical temperature. More importantly, an M curve with double compensation temperatures can be observed, which is not predicted by the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi mathvariant="normal">N</mml:mi> <mml:mover accent="true"> <mml:mrow> <mml:mi mathvariant="normal">e</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>́</mml:mo> </mml:mrow> </mml:mover> <mml:mi>el</mml:mi> </mml:math> theory. This remarkable compensation phenomenon has potential application value in the field of magnetic recording.