Magnetic and electrical properties of La0.67Ca0.33Mn0.9V0.1O3 two-phase composite
Küçük Resim Yok
Tarih
2006
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
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.
Açıklama
Anahtar Kelimeler
manganites, V substitution, colossal magnetoresistance, magnetic entropy, phase separation
Kaynak
Physica B-Condensed Matter
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
371
Sayı
2
