Enhancement of ferromagnetism by Cr doping in Ni-Mn-Cr-Sb Heusler alloys

Authors

Mahmud Khan, University of Alberta
Igor Dubenko, Southern Illinois University Carbondale
Shane Stadler, Louisiana State University
J. Jung, University of Alberta
S. S. Stoyko, University of Alberta
Arthur Mar, University of Alberta
Abdiel Quetz, Southern Illinois University Carbondale
Tapas Samanta, Southern Illinois University Carbondale
Naushad Ali, Southern Illinois University Carbondale
K. H. Chow, University of Alberta

Document Type

Article

Publication Date

3-18-2013

Abstract

A series of Mn rich Ni50Mn37-xCrxSb 13 Heusler alloys have been investigated by dc magnetization and electrical resistivity measurements. Due to the weakening of the Ni-Mn hybridization, the martensitic transition shifts to lower temperatures with increasing Cr concentration, while the saturation magnetization at 5 K increases. The magnetoresistance and exchange bias properties are dramatically suppressed with increasing Cr concentration. The observed behaviors suggest that substitution of Cr for Mn in Ni50Mn37-xCr xSb13 Heusler alloys not only destabilizes the martensitic phase but also enhances ferromagnetism in the system. The possible mechanisms responsible for the observed behavior are discussed. © 2013 American Institute of Physics.

Publication Source (Journal or Book title)

Applied Physics Letters

Recommended Citation

Khan, M., Dubenko, I., Stadler, S., Jung, J., Stoyko, S., Mar, A., Quetz, A., Samanta, T., Ali, N., & Chow, K. (2013). Enhancement of ferromagnetism by Cr doping in Ni-Mn-Cr-Sb Heusler alloys. Applied Physics Letters, 102 (11) https://doi.org/10.1063/1.4795627