• Title of article

    Electronic transport and magnetic properties in (La1−xGdx)0.67 Ca0.33MnOδ perovskites

  • Author/Authors

    Hao، نويسنده , , J.H. and Li، نويسنده , , Z.S. and Wong، نويسنده , , H.K.، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2001
  • Pages
    4
  • From page
    70
  • To page
    73
  • Abstract
    Polycrystalline samples of La-Ca-Mn-O doped with Gd have been prepared. We have systematically examined their electronic transport, low-field magnetoresistance, and magnetization behaviors in a series of (La1−xGdx)0.67Ca0.33MnOδ with 0.10≤x≤1.00. The maximum magnetoresistance ratio at B=0.85 T with (R0−RB)/R0=92.5% occurs approximately at x=0.3. It is also found that the Gd-doped samples show a novel memory effect. The effects of gadolinium ion composition on the electric and magnetoresistance behaviors of manganese perovskites (La1−xGdx)0.67Ca0.33MnOδ could arise as from changes in the average ionic radius of the La site 〈rA〉.
  • Keywords
    transport , MAGNETIC , Manganese perovskite , memory effect , Colossal magnetoresistance
  • Journal title
    MATERIALS SCIENCE & ENGINEERING: B
  • Serial Year
    2001
  • Journal title
    MATERIALS SCIENCE & ENGINEERING: B
  • Record number

    2137265