Universal magnetic structure of the half-magnetization phase in Cr-based spinels

松田 雅昌; 大山 研司*; 吉居 俊輔*; 野尻 浩之*; Frings, P.*; Duc, F.*; Vignolle, B.*; Rikken, G. L. J. A.*; Regnault, L.-P.*; Lee, S.-H.*; et al.

Physical Review Letters, 104(4), p.047201_1 - 047201_4, 2010/01

https://doi.org/10.1103/PhysRevLett.104.047201

Using an elastic neutron scattering technique under a pulsed magnetic field up to 30 T, we determined the magnetic structure in the half-magnetization plateau phase in the spinel CdCrO. The magnetic structure has a cubic 432 symmetry, which is the same as that observed in HgCrO. This suggests that despite their different zero-field ground states a universal field induced spin-lattice coupling mechanism is at work in the Cr-based spinels.