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Title: Insulator–Metal Transitions, Giant Magnetoresistance, and Related Aspects of the Cation-Deficient LaMnO3 Compositions La1−δMnO3and LaMn1−δ′O3
Authors: Arulraj, Anthony
Mahesh, R
Subbanna, G N
Mahendiran, R
Raychaudhuri, A K
Rao, C N R
Keywords: Structural Aspects
Defect Chemistry
Issue Date: 15-Nov-1996
Publisher: Academic Press Inc
Citation: Journal Of Solid State Chemistry 127(1), 87-91 (1996)
Abstract: Electron transport and magnetic properties of the cation-deficientcompositions of LaMnO3with the nominal formulae La1−δMnO3(0.0 ≤ δ ≤ 0.2) and LaM1−δ′O3(0.0 ≤ δ′ ≤ 0.2) were investigated after their defect structures were examined. La1−δMnO3(δ = 0.1) contains more than one defect structure involving both La and Mn vacancies. La1−δMnO3(0.0 ≤ δ ≤ 0.2) compositions are all ferromagnetic and show insulator–metal (I–M) transition, with the resistivity decreasing with increasing δ. LaMn1−δ′O3compositions show ferromagnetism and the I–M transition only up to δ′ = 0.05, with the resistivity increasing with δ′. All compositions showing the I–M transitions exhibit giantmagnetoresistance
Description: Restricted Access
Other Identifiers: 0022-4596
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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