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Ba2YFeO5.5: A Ferromagnetic Pyroelectric Phase Prepared by Topochemical Oxidation.

Abstract:

Reaction of the anion-deficient, cation-ordered perovskite phase Ba 2YFeO5 with 80 atm of oxygen pressure at 410 C results in the formation of the Fe4+ phase Ba2YFeO5.5. The topochemical insertion of oxide ions lifts the inversion symmetry of the centrosymmetric host phase, Ba2YFeO5 (space group P2 1/n), to yield a noncentrosymmetric (NCS) phase Ba 2YFeO5.5 (space group Pb21m (No. 26), a = 12.1320(2) Å, b = 6.0606(1) Å, c = 8.0956(1) Å, V = 595.257(2) Å3) confirmed by the observation of secon...

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Publication status:
Published

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Publisher copy:
10.1021/cm400364y

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More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
CHEMISTRY OF MATERIALS
Volume:
25
Issue:
9
Pages:
1800-1808
Publication date:
2013-05-14
DOI:
EISSN:
1520-5002
ISSN:
0897-4756
Language:
English
Keywords:
Pubs id:
pubs:405817
UUID:
uuid:a96c4fc3-45b7-4c10-95c9-9057504ccbe4
Local pid:
pubs:405817
Source identifiers:
405817
Deposit date:
2013-11-16

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