High pressure synthesis and structure of a new magnetoplumbite-type cobalt oxide SrCo12O19 |
| |
| Authors: | Shintaro Ishiwata Ichiro Terasaki Mikio Takano |
| |
| Institution: | a Department of Applied Physics, Waseda University, Ookubo, Shinjuku, Tokyo 169-8555, Japan
b Institute for Chemical Research, Kyoto University, Gokashou, Uji 611-0011, Japan |
| |
| Abstract: | A new magnetoplumbite-type hexagonal cobalt oxide, SrCo12O19, has been synthesized at a high pressure of 3 GPa and its structural and magnetic properties have been studied using single crystalline samples. Bond-valence calculations for five crystallographically independent Co sites show a rather wide charge distribution from +2.15 to +3.50. Magnetic measurements have revealed anisotropic magnetic behavior below a magnetic ordering temperature of 80 K. Comparative discussions on the structure-property relationship for SrCo12O19 and related compounds suggest the presence of localized spins with a uniaxial anisotropy at the trigonal bipyramidal site. |
| |
| Keywords: | High pressure synthesis Cobalt oxides Magnetoplumbite SrCo6O11 |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
