Large intragrain magnetoresistance in the double perovskite BaLaMnMoO6

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Abstract

BaLaMnMoO6 was prepared in polycrystalline form by a solid-state technique. The sample is ferrimagnetic with Tc∼145 K, and a transition to spin-glass-type behavior is observed at 25 K at an applied magnetic field below 0.5 Tesla. The temperature dependence of electrical resistivity, from 5 to 300 K, indicates semiconducting behavior with room temperature resistivity, ρRT∼1.06 Ω.cm, and is well described by Mott's law for variable-range hopping conduction with large T0 values. A large intragrain MR effect, -22% in a field of 5 Tesla at 5 K, was observed below 25 K.

Original languageEnglish (US)
Pages (from-to)121-125
Number of pages5
JournalJournal of Alloys and Compounds
Volume338
Issue number1-2 SPEC.
DOIs
StatePublished - May 16 2002

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Keywords

  • Double perovskite
  • Magnetic measurements
  • Magnetoresistance
  • Spin glasses

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