Garg , K. B. and Heinonen , M. and Nordblad, P. and Dalela, S. D. and Panwar, N. and Sen, V. and Agarwal, S. K. and Sharma, Neha (2010) A Comparative Study Of Oxygen Loss On In Situ Heating In Prmno3 And Bamno3. International Journal of Modern Physics B, 25 (9). pp. 1235-1250. ISSN 0217-9792

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Abstract

We have thoroughly investigated the oxygen loss in PrMnO3 and BaMnO3 , the end members of the AMnO3 system, on in situ heating in a reducing atmosphere. 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.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s World Scientific.
Uncontrolled Keywords:	Pr/BaMnO3; XPS; SQUID; SEM; Mn valence; spectral weight transfer; canted antiferromagnetic ordering
Subjects:	Applied Physics/Condensed Matter Physics
Divisions:	UNSPECIFIED
Depositing User:	Mr. Abhishek Yadav
Date Deposited:	31 Oct 2012 06:52
Last Modified:	31 Oct 2012 06:52
URI:	http://npl.csircentral.net/id/eprint/773

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