Kumar, Neeraj and H. , Kishan and Rao, A. and Awana, V. P. S. (2010) Doped Pr0.7−xBixSr0.3MnO3 manganite: A structural, electrical and magnetic effect. Journal of Alloys and Compounds, 504 (2). L39-L41. ISSN 0925-8388

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Abstract

Structural, electrical and magnetic properties of Pr0.7−xBixSr0.3MnO3 (x = 0.00, 0.15, 0.25) compound have been studied. A decrease in unit cell volume is observed, although Bi3+ (1.17 Å) ion has larger ionic radii than Pr3+ (1.126 Å) ion and can be understood in a scenario of coexistence of charge ordered and ferromagnetic phase. “Electrical-resistivity and Magnetic” measurements show that the transition temperature (TMI, TC) increases i.e. “284.6 K, 276.5 K” to “294.04 K, ∼300 K” for Pr0.70Sr0.3MnO3 and Pr0.45Bi0.25Sr0.3MnO3 compounds, respectively. Larger ionic size of Bi3+ ion encourages double-exchange (DE) interaction, which in turns result an increase in transition temperatures.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s. Elsevier B.V.
Uncontrolled Keywords:	Manganites; Metal–insulator transition; Charge order
Subjects:	Chemistry Materials Science Metallurgy & Metallurgical Engineering
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	04 Apr 2012 07:10
Last Modified:	04 Apr 2012 07:10
URI:	http://npl.csircentral.net/id/eprint/91

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