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Kinetic arrest and exchange bias in L 1 0 Ni–Mn–Ga
Author(s) -
Çakır Aslı,
Acet Mehmet,
Farle Michael
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201451301
Subject(s) - thermomagnetic convection , ferromagnetism , antiferromagnetism , materials science , alloy , condensed matter physics , magnetic shape memory alloy , kinetic energy , exchange bias , phase (matter) , shape memory alloy , magnetic domain , metallurgy , magnetic field , magnetization , chemistry , magnetic anisotropy , physics , organic chemistry , quantum mechanics
Ni–Mn–Ga Heusler alloys are particularly interesting for their magnetic shape‐memory properties. However, more recently, the observation of magnetic glass‐like behavior in these alloys, particularly at low Ga concentrations, has extended the interest in the properties of these alloys. We have investigated the thermomagnetic properties of the Ni49.8 Mn39.1 Ga12.1 Heusler alloy with ( e / a ) = 7.98 . In this alloy with relatively low Ga concentration, we find kinetic arrest and exchange‐bias effects occurring concurrently. We show that these effects are related to the presence of mixed ferromagnetic and antiferromagnetic interactions and that the two components are magnetically phase‐separated.