On the crystal structure and magnetic properties of the Mn0.94Ti0.06CoGe alloy

Structural and magnetic properties of Mn0.94Ti0.06CoGe have been studied by a combination of bulk magnetisation and neutron diffraction measurements over the temperature range of 5 K-350 K. The crystal structural transition occurs at T-str (similar to 235 K) with a change in symmetry from the low temperature orthorhombic TiNiSi-type structure (space group Pnma) to the high temperature hexagonal Ni2In-type structure (space group P63/mmc) and the magnetic phase transition takes place around T-C = 270 K. It is found that the structural transition around T-str is incomplete and there is a co-existence of the orthorhombic and hexagonal structures between T-str and T-C (similar to 270 K). These results are discussed in connection with the magnetic and magnetocaloric behaviours in Mn0.94Ti0.06CoGe. © 2013, American Institute of Physics.

Keywords

Neutron diffraction, Magnetization, Phase transformations, Orthorhombic lattices, Crystals, Thallium, Silicon, Nickel

Citation

Shamba, P., Wang, J. L., Debnath, J. C., Zeng, R., Hong, F., Cheng, Z. X., Studer, A. J., Kennedy, S. J., & Dou, S. X. (2013). On the crystal structure and magnetic properties of the Mn0.94Ti0.06CoGe alloy. Journal of Applied Physics, 113(17), 17A941. doi:10.1063/1.4801523