Chemical disorder effects in transport and magnetic properties of perovskite manganite View Full Text


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Article Info

DATE

2005-04-01

AUTHORS

Subhayan Biswas, Sandip Chatterjee, P. Chatterjee, A.K. Nigam, S.K. De

ABSTRACT

The dependence of the novel properties observed in colossal magnetoresistance (CMR) materials, other than average ionic radii 〈 r A 〉 and Mn valence ratio (Mn 3+ /Mn 4+ ), was investigated through examination of the transport and magnetic properties of Pr 0.65 (Ca 0.7 Sr 0.3 ) 0.35 MnO 3 , La 0.123 Pr 0.527 (Ca 0.8 Sr 0.2 ) 0.35 MnO 3 , and Pr 0.65 (Ca 0.866 Ba 0.134 ) 0.35 MnO 3 . The average ionic radii 〈r A 〉 and valence ratio of all three samples have been kept equal. The results of this investigation indicate a more intense role of the nature of individual A-site cation and the lattice mismatch. A remarkably large magnetoresistance of the order of 10 8 at moderate magnetic field has been observed for Ba-doped sample. More... »

PAGES

813-817

Identifiers

URI

http://scigraph.springernature.com/pub.10.1557/jmr.2005.0114

DOI

http://dx.doi.org/10.1557/jmr.2005.0114

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1038673629


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