Enhancement of Tc and the re-entrant spin glass transition in La0.86Ca0.14Mn1−yCryO3 (y = 0, 0.1 and 0.2)

  title={Enhancement of Tc and the re-entrant spin glass transition in La0.86Ca0.14Mn1−yCryO3 (y = 0, 0.1 and 0.2)},
  author={R. Suryanarayanan and Taweesak Sudyoadsuk and T. Winotai},
  journal={Journal of Physics: Condensed Matter},
We report on structural, frequency dependent ac susceptibility, dc magnetization and magnetoresistance (MR) measurements on polycrystalline samples of La0.86Ca0.14Mn1−yCryO3 (y = 0, 0.1 and 0.2) prepared by the sol–gel technique. For y = 0, a paramagnetic to ferromagnetic transition was observed at Tc = 185 K.For y = 0.1, the value of Tc = 200 K, an increase of 15 K, and for y = 0.2, Tc = 195 K,an increase of 10 K. The imaginary part of the ac susceptibility for all three samples shows a… 
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