Structurally driven metamagnetism in MnP and related Pnma compounds

Article

关键词: MAGNETIC-STRUCTURE;    SPIN-WAVES;    SYSTEM;    CRYSTAL;    ALLOYS;    MNAS;    HELIMAGNETISM;    DIFFRACTION;    TRANSITIONS;    PRESSURE;   

DOI  :  10.1103/PhysRevB.81.224426

来源: SCIE

【 摘 要 】

We investigate the structural conditions for metamagnetism in MnP and related materials using density-functional theory. A magnetic stability plot is constructed taking into account the two shortest Mn-Mn distances. We find that a particular Mn-Mn separation plays the dominant role in determining the change from antiferromagnetic to ferromagnetic order in such systems. We establish a good correlation between our calculations and structural and magnetic data from the literature. Based on our approach it should be possible to find Mn-containing alloys that possess field-induced metamagnetism and associated magnetocaloric effects.

【 授权许可】

Free