Magnetic properties of Mn3(Ga,Al)C under high magnetic field and high pressure

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:177

Article; Proceedings Paper

Kamishima, K ; Goto, T ; Kanomata, T ; Bartashevich, MI

关键词: itinerant magnetism;    magnetization - pressure dependent;    magnetostriction - forced volume;    phase transitions - order-order;    phase transitions - pressure effect;   

DOI  :  10.1016/S0304-8853(97)00920-7

来源: Elsevier

【 摘 要 】

Mn3GaC is antiferromagnetic (AFM) at low temperatures and ferromagnetic (FM) above T-t (similar to 160 K). The magnetization of Mn3Ga1-xAlxC with x less than or equal to 0.08 has been measured under pressure (p) with a special interest in the p dependence of magnetic properties in this system. It is found that the pressure enhances the magnetic moment of Mn mu(FM) in the FM phase and changes the AFM to a new magnetic phase with spontaneous magnetization. The forced magnetostriction of Mn3Ga1-xAlxC with x = 0.015 and 0.07 indicates mu(FM) < mu(NEW PHASE) < mu(AFM). (C)1998 Elsevier Science B.V. All rights reserved.

【 授权许可】

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