Structural and magnetic properties of CoTi1-xMnxSb solid solution.

Krystyna Mateja-Kaczmarska 1Magdalena Wicher Grażyna Chełkowska 

1. Institute of Physics, Silesian University, Uniwersytecka 4, Katowice 40007, Poland

Abstract

The series of the half-Heusler compounds CoTi1-xMnxSb, starting with the Pauli paramagnetic semiconductor CoTiSb and ended by ferromagnetic metal CoMnSb, have been prepared. Polycrystalline samples were obtained by arc furnace melting and annealed at 700 C for one week. All samples crystallise with the MgAgAs regular structure. For composition with x > 0.6 superstructure lines, corresponding to a doubled cell parameter, appear. The concentration dependence of the lattice parameter does not follow Vegard's law. The ferromagnetic ground state appears in the system when 20% of Ti are replaced by Mn.

 

Presentation: poster at E-MRS Fall Meeting 2005, Symposium B, by Krystyna Mateja-Kaczmarska
See On-line Journal of E-MRS Fall Meeting 2005

Submitted: 2005-05-18 10:22
Revised:   2009-06-07 00:44