Mössbauer study of the FeV2O4---Fe3O4 system |
| |
Authors: | Masanori Abe Masao Kawachi Shōichiro Nomura |
| |
Institution: | Department of Physical Electronics, Tokyo Institute of Technology, ōokayama, Meguro-ku, Tokyo, Japan |
| |
Abstract: | Mössbauer spectra of the Fe1+xV2−xO4 spinel solid solutions are taken to investigate the cation distribution. Room temperature spectra can be interpreted by assuming that the cation distribution is represented approximately as Fe2+Fe3+xV3+2−x]O4 for 0 x 0.35 and Fe3+Fe2+Fe3+x−1V3+2−x]O4 for 1 x 2 and the ionic valence arrangement changes from the 2-3-3 type (Fe2+Fe3+xV3+2−x]O4) to the 3-2-3 one (Fe3+Fe2+V3+]O4) in the range 0.35 x 1. Fe2VO4 is found to be 3-2-3 spinel, Fe3+Fe2+V3+]O4. Its paramagnetic spectrum at 473°K is, however, composed of a broad single line with isomer shift value of 0.61 mm/sec relative to stainless steel, in which the line splitting due to the ferric and ferrous ions is rendered indistinguishable. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|