Lattice, magnetic and transport properties in antiperovskite compounds

✍ Scribed by Yongchun Wen; Cong Wang; Ying Sun; Man Nie; Liang Fang; Yongjun Tian

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 847 KB
• Volume: 149
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2009.06.009

✦ Synopsis

The temperature-dependent magnetization, lattice, and transport properties of Mn 3 Sn 1-x Ge x C (0 ≤ x ≤ 0.5) compounds are systematically investigated. The Mn-Mn atomic distance decreases as Ge content is increased, and the transition temperature from ferromagnetic (or ferrimagnetic) to paramagnetic state decreases too. Mn 3 SnC has a large magnetovolume effect (MVE). However, Ge-doping in Mn 3 SnC gradually reduces the MVE, till the MVE disappears. Whether there is an abnormal lattice change or not, there always exists an anomalous increase in resistivity near the magnetic phase transition point with decreasing temperature.