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A comparative study of oxygen loss on in situ heating in PrMnO3 and BaMnO3
Department of Physics, University of Rajasthan, Jaipur, India.
Dept of Material Science, Turku University, Finland.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Department of Physics, Banasthali Vidyapeeth, Indien.
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2011 (English)In: International Journal of Modern Physics B, ISSN 0217-9792, Vol. 25, no 9, 1235-1250 p.Article in journal (Refereed) Published
Abstract [en]

We have thoroughly investigated the Oxygen loss in PrMnO3 and BaMnO3 the end members of the AMnO(3) system, on in situ heating in a reducing at This was done to drive some oxygen out from them and thus possibly alter the valence of the Mn cation. Sample characterization was done through X-ray diffraction and SEM measurements. The core-level photoemission point to oxygen loss from only BaMnO3 changing some of Mn4+ to Mn3+ in it, transfer of some spectral weight to the highly localized Fehrenbacher-Rice states and an increased Mn 3d-O 2p hybridization. Magnetization measurements show that at low temperatures, the samples depict a canted antiferromagnetic ordering.

Place, publisher, year, edition, pages
2011. Vol. 25, no 9, 1235-1250 p.
Keyword [en]
Pr/BaMnO3, XPS, SQUID, SEM, Mn valence, spectral weight transfer, canted antiferromagnetic ordering
National Category
Physical Sciences Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-154603DOI: 10.1142/S0217979211058651ISI: 000290632200005OAI: oai:DiVA.org:uu-154603DiVA: diva2:421566
Available from: 2011-06-09 Created: 2011-06-08 Last updated: 2017-12-11

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