| Literature DB >> 19507911 |
Olga Smirnova1, Masaki Azuma, Nobuhiro Kumada, Yoshihiro Kusano, Masaaki Matsuda, Yuichi Shimakawa, Takahiro Takei, Yoshinori Yonesaki, Nobukazu Kinomura.
Abstract
Neutron diffraction and FT-IR analysis revealed that the novel oxynitrate Bi(3)Mn(4)O(12)(NO(3)) (space group P3, a = 4.9692(1) A, c = 13.1627(3) A) prepared by hydrothermal synthesis is of a new structural type including flat NO(3) layers alternating with blocks of two PbSb(2)O(6)-like layers. Mn(4+) (S = (3)/(2)) forms a regular honeycomb lattice, and magnetic susceptibility data indicated two-dimensional magnetism. Despite its Weiss constant of -257 K, no long-range ordering was observed down to 0.4 K because of the magnetic frustration due to the competition between the nearest and the next-nearest antiferromagnetic interactions.Entities:
Year: 2009 PMID： 19507911 DOI： 10.1021/ja901922p
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419