Crystal Structure and Magnetic Ordered States in the Distorted-Triangular-Lattice Antiferromagnet RbMnBr₃

Abstract

-The crystal structure of the low-temperature phase V of the distorted-triangular-lattice antiferromagnet RbMnBr3 is thought to be a zigzag-row model with the space group symmetry Pbca (Z = 8) which is deduced from the extinctions of the possible reflections in the diffraction experiments. The spin-ordered states of RbMnBr3 under magnetic fields in the ab plane are suggested to be qualitatively explained by the row model studied by Zhitomirsky.