Addendum to CaMnO rqrq

Machida, Akihiko; Moritomo, Yutaka*; Oyama, Kenji*

Journal of the Physical Society of Japan, 72(5), P. 1312, 2003/05

In order to investigate interrelation between the lattice structure and the magnetic structure, we have performed Rietveld structural analysis on the neutron powder patterns for TbCaMnO at low temperature. In the concentration range of , we observed the Bragg reflections due to the CE-like- and C-type structures. In this range, the powder patterns were reproduce by the two-phase model with and symmetries. The fractions of these phases change against concentration . This variation of the fraction for the phase is similar to the variation of the integrated intensities of the CE-like-type magnetic Bragg reflections. This indicates that the phase is responsible for the CE-like spin-ordering. Furthermore, we discussed interrelation between the detailed lattice structure and magnetic structure.