Nitrogen-Induced Change of Magnetic Properties in Antiperovskite-Type Carbide： Mn3InC

• Published in: 中国物理快报：英文版 no. 6; pp. 159 - 163
• Main Author: 伊木然 孙莹 邓司浩 史可文 胡鹏伟 王聪
• Format: Journal Article
• Language: English
• Published: 01.06.2015
• Subjects: 原子力显微镜; 居里温度; 硬质合金; 磁性能; 结构式; 诱导机制; 钙钛矿; 饱和磁化强度
• ISSN: 0256-307X; 1741-3540
• DOI: 10.1088/0256-307X/32/6/067503

The effects of N substitution on the magnetic properties of Mn3InC1-xNx （0.0≤ x ≤0.7） are investigated sys- tematically. Partial substitution of N for C leads to the monotonic reduction in both the Curie temperature Tc and saturated magnetization Ms. The final results obtained from thermo-magnetie curves demonstrate that Mn3InC1-xNx samples show a magnetic phase transition from a paramagnetic （PM） state to a ferrimagnetic （FIM） state consisting of ferromagnetic （FM） and antiferromagnetie （AFM） components. In addition, there is a competition between the AFM component and the FM component in the FIM state with the change of the N-doped content. Magnetic measurements of Mn3InC at 100 Oe and 5000 Oe indicate the metastability and the coexistence of different magnetic phases at lower temperature. The spans of FIM phase broaden gradually with further N doping. The mechanism for the induction of the complicated magnetic state is still in controversy. However, the results clearly show that the doping at the X site in antiperovskite Mn3AX materials is as useful as that of the A and Mn sites.