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Advances in Condensed Matter Physics
Volume 2013 (2013), Article ID 729458, 9 pages
http://dx.doi.org/10.1155/2013/729458
Research Article

The Magnetic/Electrical Phase Diagram of Cr-Doped Antiperovskite Compounds ( )

1Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei 230031, China
2High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China

Received 19 September 2012; Revised 13 November 2012; Accepted 20 November 2012

Academic Editor: Koshi Takenaka

Copyright © 2013 S. Lin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report the effect of Cr doping on the structural, magnetic, and electrical transport properties in Cr-doped antiperovskite compounds ( ). With increasing the Cr content , the lattice constant increases while both the Curie temperature and the saturated magnetization decrease gradually. The electrical resistivity shows different behaviors as a function of . For , there exists a semiconductor-like behavior below a certain temperature which decreases with increasing . In contrast, for , the resistivity shows a metallic behavior in the whole temperature measured (2–350 K). In particular, the Fermi-liquid behavior is obtained below 70 K. Finally, based on the magnetic and electrical properties of ( ) a magnetic/electrical phase diagram was plotted.