Magnetic and transport properties of la0.7-xPr xPb0.3MnO3

H. Z. Chen, S. L. Young, Y. C. Chen, Lance Horng, J. B. Shi

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The substitution of Pr on the La site in La1-xPr xPb0.3MnO3 has been studied in order to probe into the physical mechanisms of colossal magnetoresistance (CMR) behavior. The magnetic order changes from a long-range order with x = 0.0 to a short-range nature with x = 0.7. The ferro-paramagnetic and metal-insulator transition temperature values decrease as Pr content increases. The highest MR ratio value is 16.9% for x = 0.0 against 41.6% for x = 0.7 in an applied field of 1 T. It is suggested that the mean ionic radius of the La-site ions may plays an important role on the CMR effect.

Original languageEnglish
Pages (from-to)729-730
Number of pages2
JournalPhysica B: Condensed Matter
Issue numberII
Publication statusPublished - 2003 May


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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