BaMn9(II)(VO4)6(OH)2: a homospin ferrimagnet with a broken spinel-lattice of B-sites.
A new vanadate of BaMn9(II)(VO4)6(OH)2 was synthesized by a conventional hydrothermal method. BaMn9(II)(VO4)6(OH)2 crystallizes in the cubic space group Pa3[combining macron], which exhibits an edge-sharing MnO6 octahedral network structure with cavities occupied by Ba(VO4)6(16-) groups. The lattice built by Mn(2+) ions shows the reverse triangular dipyramid Mn7 in the system, which can be considered as a broken spin lattice of B-sites in spinels. The title compound shows a ferrimagnetic behavior with TC = 18 K.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China. hezz@fjirsm.ac.cn.
Wenbin
W
Guo
Zhangzhen
Z
He
Yingying
Y
Tang
Suyun
S
Zhang
Ming
M
Yang
Wendan
W
Cheng