Title of article
Low-field colossal constant magnetoresistance for wide temperature ranges in the sol–gel prepared La2/3Ca1/3Mn0.96Cu0.04O3
Author/Authors
Yuan، نويسنده , , S.L. and Tang، نويسنده , , J. and Xia، نويسنده , , Z.C. and Liu، نويسنده , , L. and Zhao، نويسنده , , L.F. and Chen، نويسنده , , W. and Zhang، نويسنده , , G.H. and Zhang، نويسنده , , L.J. and Feng، نويسنده , , Leland W. and Cao، نويسنده , , H. and Zhong، نويسنده , , Q.H. and Niu، نويسنده , , L.Y. and Liu، نويسنده , , S.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
5
From page
743
To page
747
Abstract
It is reported here that colossal constant magnetoresistance (CCMR) over the whole temperature range below the insulator–metal transition can be realized at low magnetic fields through doping 4% Cu in the sol–gel prepared La2/3Ca1/3MnO3 sample sintered at 950 °C. The magnetoresistance defined as MR0=ρ(T,H=0)−ρ(T,H)ρ(T,H=0) or MR=ρ(T,H=0)−ρ(T,H)ρ(T,H),it is shown that the CCMR has values of MR0 (MR) as high as ∼60% (∼1.3×102%), ∼90% (∼1.2×103%) and ∼100% (∼3×104%) for magnetic fields of H=0.1, 0.3 and 1 T, respectively.
Keywords
A. Magnetically ordered materials , D. Phase transition , D. Electronic transport
Journal title
Solid State Communications
Serial Year
2003
Journal title
Solid State Communications
Record number
1788331
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