Abstract
exhibits a ferromagnetic transition at K and another transition to a phase with antiferromagnetic components at K. By substituting V for Mn, so as to obtain , is revealed to decrease with and then vanish around . In this study, the phase boundary of the transition at in the high-field range is found for with pulsed fields up to T. The magnetization of slowly increases even at the highest field of T, though it occurs more gradually as increases. We compare the magnetization for at 62 T with the Slater-Pauling rule, which holds when a Heusler compound is a half-metal, and find fairly good agreement. This suggests an intimate relation between the high-field phase and the half-metallic electronic structure, and that at the high-field limit the phase approaches the half-metallic state, which has been predicted by band-structure calculations.
- Received 26 September 2016
- Revised 25 November 2016
DOI:https://doi.org/10.1103/PhysRevB.95.014410
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