Magnetic and electrical properties of La0.67Ca0.33Mn0.9V0.1O3 two-phase composite

KOLAT V. S., Gencer H., ATALAY S.

PHYSICA B-CONDENSED MATTER, cilt.371, sa.2, ss.199-204, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 371 Sayı: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.physb.2005.09.036
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.199-204
  • İnönü Üniversitesi Adresli: Evet

Özet

In this work, we present magnetic and electrical properties of La0.67Ca0.33Mn1-xVxO3 (x=0 and 0.1). Polycrystalline La0.67Ca0.33MnO3 and La0.67Ca0.33Mn0.9V0.1O3 samples were prepared by conventional solid-state reaction. Two Curie temperatures for the La0.67Ca0.33Mn0.9V0.1O3 sample were observed at T-c1 = 223 K and T-c2 = 190 K. The undoped La0.67Ca0.33MnO3 sample showed only one magnetic transition temperature at 267K. The temperature dependence of resistance showed two maxima in the V-doped sample, and the peak value of magnetoresistance (MR) around the Curie temperature increased with V doping. Double maxima ill the resistance-temperature and magnetisation-temperature Curves are explained by the existence of two phases ill La0.67Ca0.33Mn0.9V0.1O3 samples. (c) 2005 Elsevier B.V. All rights reserved.