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International Journal of Modern Physics B

Article . 2010 . Peer-reviewed

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International Journal of Modern Physics B

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ELECTRICAL AND MAGNETIC BEHAVIOR OF TRANSITION METAL OXIDES Ln0.7A0.3TMO3, Ln= La, Pr; A = Ca, Sr AND TM = Mn, Co

descriptionPublicationkeyboard_double_arrow_right Article 20 Mar 2010Publisher:World Scientific Pub Co Pte LtJournal:International Journal of Modern Physics B, volume 24, pages 762-769 (issn: 0217-9792, eissn: 1793-6578,

Authors: A. Vlădescu; Romulus Tetean; I.G. Deac; A. Tunyagi; I. Balasz;

doi: 10.1142/s0217979210064393

ELECTRICAL AND MAGNETIC BEHAVIOR OF TRANSITION METAL OXIDES Ln0.7A0.3TMO3, Ln= La, Pr; A = Ca, Sr AND TM = Mn, Co

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Abstract

We present a detailed magnetic study of the polycrystalline transition metal oxides Ln 0.7 A 0.3 TMO 3, Ln = La , Pr ; A = Ca , Sr and TM = Mn , Co at low temperatures including electrical resistance, magnetization and ac susceptibility measurements. The effect of the A-site and B-site substitutions on the properties of these compounds is discussed. The results of this analysis indicate that the electrical and magnetic behavior of these compounds have some reminiscences of the manganites having similar formula, but the spin disorder and the grain boundary effects control the properties of these materials.

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Babeș-Bolyai University
Romania

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