An ac field probe for the magnetic ordering of magnets with random anisotropy

Ha M. Nguyen, Pai-Yi Hsiao
2009 Applied Physics Letters  
A Monte Carlo simulation is carried out to investigate the magnetic ordering in magnets with random anisotropy (RA). Our results show peculiar similarities to recent experiments that the real part of ac susceptibility presents two peaks for weak RA and only one for strong RA regardless of glassy critical dynamics manifested for them. We demonstrate that the thermodynamic nature of the low-temperature peak is a ferromagnetic-like dynamic phase transition to quasi-long range order (QLRO) for the
more » ... ormer. Our simulation, therefore, is able to be incorporated with the experiments to help clarify the existence of the QLRO theoretically predicted so far.
doi:10.1063/1.3268473 fatcat:ffmpsoxfnnbrbdbi3txthajrxe