Lattice dynamics of novel Heusler alloys MnY2Z (Z=Al and Si)
作者： Yuhit Gupta , M.M. Sinha , S.S. Verma
DOI: 10.1016/J.PHYSB.2020.412222
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摘要: Abstract Mn-based Heusler alloys ‘MnY2Z (Z= (Al and Si)) have ‘L21’ crystal structure at the ambient condition of temperature pressure. MnY2Z a high melting temperature, shows half-metallic character shape memory effects where numerous its applications takes place. In this report, theoretical investigations phonon properties in cubic phase has been investigated by using density functional theory followed perturbation to comprehend role phonons these alloys. calculations, zone center frequency, modes symmetric directions states are for The found be positive all indicate stability present L21 structure. Additionally, Raman infrared also identified each alloy. results interpreted with other existing similar type
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