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Topotactic reduction as a route to new close-packed anion deficient perovskites: structure and magnetism of 4H-BaMnO(2+x).

Abstract:

The anion-deficient perovskite 4H-BaMnO(2+x) has been obtained by a topotactic reduction, with LiH, of the hexagonal perovskite 4H-BaMnO(3-x). The crystal structure of 4H-BaMnO(2+x) was solved using electron diffraction and X-ray powder diffraction and further refined using neutron powder diffraction (S.G. Pnma, a = 10.375(2) A, b = 9.466(2) A, c = 11.276(3) A, at 373 K). The orthorhombic superstructure arises from the ordering of oxygen vacancies within a 4H (chch) stacking of close packed c...

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Publication status:
Published

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Publisher copy:
10.1021/ja903216d

Authors


Hadermann, J More by this author
Abakumov, AM More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
Journal:
Journal of the American Chemical Society
Volume:
131
Issue:
30
Pages:
10598-10604
Publication date:
2009-08-05
DOI:
EISSN:
1520-5126
ISSN:
0002-7863
URN:
uuid:b8e3552c-dafe-4281-83b3-ce7d17d8c5dd
Source identifiers:
41260
Local pid:
pubs:41260
Language:
English

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