| Literature DB >> 19235989 |
Kengo Oka1, Masaki Azuma, Shigeto Hirai, Alexei A Belik, Hiroshi Kojitani, Masaki Akaogi, Mikio Takano, Yuich Shimakawa.
Abstract
A tetragonal perovskite PbMnO(3) was obtained by treating the 6H hexagonal perovskite phase at 15 GPa and 1273 K. Structural analysis using synchrotron X-ray diffraction suggested that PbMnO(3) crystallizes in the centrosymmetric space group P4/mmm, unlike PbTiO(3) and PbVO(3) which have a polar structure in space group P4mm. Iodometric titration revealed the presence of the oxygen deficiency of x = 0.06 for PbMnO(3-x). The hexagonal 6H and the 3C perovskite phases exhibited antiferromagnetic ordering at 155 and 20 K, respectively.Entities:
Year: 2009 PMID： 19235989 DOI： 10.1021/ic802081f
Source DB: PubMed Journal: Inorg Chem ISSN： 0020-1669 Impact factor: 5.165