3D-Ising critical behavior in antiperovskite-type ferromagneticlike Mn3GaN
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In this work, a systematic investigation on magnetic critical behavior is performed for the first time on an antiperovskite-type Mn3GaN, which is prepared by intentionally modifying stoichiometry. According to the XRD results, the antiperovskite structure is well preserved, even though all lattice parameters shrink upon reducing Ga and N content down to 60%. The sample exhibits a ferromagneticlike feature with a Curie temperature (T-C) of 394K rather than frustrated behavior in stoichiometric Mn3GaN. Most importantly, the modified Arrott plots, Kouvel-Fisher plots, as well as critical isotherm method self-consistently co-confirm the critical exponents of beta=0.33, gamma=1.23, and delta=4.7, unambiguously indicating that the critical behavior follows the 3D-Ising model around T-C. Published under license by AIP Publishing.
Originalsprog | Engelsk |
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Artikelnummer | 073903 |
Tidsskrift | Journal of Applied Physics |
Vol/bind | 127 |
Udgave nummer | 7 |
Antal sider | 5 |
ISSN | 0021-8979 |
DOI | |
Status | Udgivet - 21 feb. 2020 |
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