Effects of site substitution and metal ion addition on doped manganites

A. K. Pradhan; Y. Feng; B. K. Roul; D. R. Sahu; M. Muralidhar

doi:10.1088/0953-8984/14/43/328

Effects of site substitution and metal ion addition on doped manganites

A. K. Pradhan, Y. Feng, B. K. Roul, D. R. Sahu, M. Muralidhar

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We report transport, magnetization and transmission electron microscopy studies of the effects of A- and B-site substitution, and the addition of metal ions such as Pt, Ag, and Sr, on doped ABO₃ perovskites, where A = La, Pr etc and B = Mn. Disorder induced by such substitution changes the behaviour of the charge-ordered (CO) state significantly. A- and B-site substitution suppresses the CO phase due to size mismatch and disorder produced by inhomogeneity. On the other hand, addition of metal ions such as Pt and Ag improves several colossal-magnetoresistance properties significantly due to microstructural effects and enhanced current percolation through grain boundaries.

Original language	English
Pages (from-to)	10323-10329
Number of pages	7
Journal	Journal of Physics Condensed Matter
Volume	14
Issue number	43
DOIs	https://doi.org/10.1088/0953-8984/14/43/328
Publication status	Published - 2002 Nov 4
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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title = "Effects of site substitution and metal ion addition on doped manganites",

abstract = "We report transport, magnetization and transmission electron microscopy studies of the effects of A- and B-site substitution, and the addition of metal ions such as Pt, Ag, and Sr, on doped ABO3 perovskites, where A = La, Pr etc and B = Mn. Disorder induced by such substitution changes the behaviour of the charge-ordered (CO) state significantly. A- and B-site substitution suppresses the CO phase due to size mismatch and disorder produced by inhomogeneity. On the other hand, addition of metal ions such as Pt and Ag improves several colossal-magnetoresistance properties significantly due to microstructural effects and enhanced current percolation through grain boundaries.",

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T1 - Effects of site substitution and metal ion addition on doped manganites

AU - Pradhan, A. K.

AU - Feng, Y.

AU - Roul, B. K.

AU - Sahu, D. R.

AU - Muralidhar, M.

PY - 2002/11/4

Y1 - 2002/11/4

N2 - We report transport, magnetization and transmission electron microscopy studies of the effects of A- and B-site substitution, and the addition of metal ions such as Pt, Ag, and Sr, on doped ABO3 perovskites, where A = La, Pr etc and B = Mn. Disorder induced by such substitution changes the behaviour of the charge-ordered (CO) state significantly. A- and B-site substitution suppresses the CO phase due to size mismatch and disorder produced by inhomogeneity. On the other hand, addition of metal ions such as Pt and Ag improves several colossal-magnetoresistance properties significantly due to microstructural effects and enhanced current percolation through grain boundaries.

AB - We report transport, magnetization and transmission electron microscopy studies of the effects of A- and B-site substitution, and the addition of metal ions such as Pt, Ag, and Sr, on doped ABO3 perovskites, where A = La, Pr etc and B = Mn. Disorder induced by such substitution changes the behaviour of the charge-ordered (CO) state significantly. A- and B-site substitution suppresses the CO phase due to size mismatch and disorder produced by inhomogeneity. On the other hand, addition of metal ions such as Pt and Ag improves several colossal-magnetoresistance properties significantly due to microstructural effects and enhanced current percolation through grain boundaries.

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Effects of site substitution and metal ion addition on doped manganites

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