Magnetic transition, lattice variation and electronic transport properties of Ag-doped Mn3Ni1-xAgxN antiperovskite compounds

作者：Chu Lihua; Wang Cong^*; Yan Jun; Na Yuanyuan; Ding Lei; Sun Ying; Wen Yongchun

来源：Scripta Materialia, 2012, 67(2): 173-176.

DOI：10.1016/j.scriptamat.2012.04.008

• Antiperovskite compounds
• Magnetism
• Lattice
• Electronic transport properties

Antiperovskite compounds Mn3Ni1-xAgxN (x = 0.2, 0.5, 0.8, 1.0) were synthesized and investigated. Around room temperature, a low-temperature coefficient of resistivity, L-TCR, and isotropic negative thermal expansion were observed, accompanying the magnetic transitions, which provides strong evidence of a correlation between spin, lattice and charge. The L-TCR was found to be 47 ppm K-1 (285-350 K) for Mn3AgN. It is thought that spin-disorder scattering is responsible for the L-TCR behavior.

• 出版日期2012-7
• 单位北京航空航天大学