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High-temperature redox chemistry of Pr0.5Sr1.5Cr0.5Mn0.5O4-delta investigated in situ by neutron diffraction and X-ray absorption spectroscopy under reducing and oxidizing gas flows

Abstract:

The structural and redox stability of the n = 1 Ruddlesden-Popper (RP) oxide Pr 0.5Sr 1.5Cr 0.5Mn 0.5O 4-δ, synthesized by the citrate-gel method, has been investigated over the temperature range 25-700 °C under reducing (5% H 2 flow) and oxidizing (O 2 or air flow) conditions by means of in situ neutron powder diffraction (NPD) and X-ray absorption near-edge structure spectroscopy (XANES). Sequential Rietveld refinement of the NPD patterns collected under hydrogen revealed de-intercalation o...

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Publication status:
Published

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Publisher copy:
10.1039/c2jm31448g

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Journal:
JOURNAL OF MATERIALS CHEMISTRY
Volume:
22
Issue:
21
Pages:
10560-10570
Publication date:
2012-01-01
DOI:
EISSN:
1364-5501
ISSN:
0959-9428
URN:
uuid:f44a6e7e-71b4-433d-807e-44e7c488ff8e
Source identifiers:
340702
Local pid:
pubs:340702
Language:
English

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