Title of article
Colossal magnetoresistance in perovskite manganite induced by localized moment of rare earth ion
Author/Authors
Dho Heon and El-Rayes، نويسنده , , Joonghoe and Kim، نويسنده , , W.S. and Chi، نويسنده , , E.O and Hur، نويسنده , , N.H. and Park، نويسنده , , S.H. and Ri، نويسنده , , H.-C.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
5
From page
143
To page
147
Abstract
The magnetic and transport properties of a single crystal of Pr0.7Ca0.3MnO3 annealed by various magnetic fields were investigated by dc and ac magnetization measurements. The ordered Pr moment is almost absent in zero-field magnetization but is clearly observed when the sample was measured after annealing with a magnetic field. The Pr moment is enhanced when the annealing field is increased. Remarkably, the ordered Pr spins appear to induce colossal magnetoresistance (∼1010%) as well as a metal–insulator (M–I) transition in Pr0.7Ca0.3MnO3. This unique behavior is discussed in terms of the reorientation of Pr spins that are strongly coupled with the neighboring Mn spins.
Keywords
D. Electronic transport , A. Magnetically ordered materials
Journal title
Solid State Communications
Serial Year
2003
Journal title
Solid State Communications
Record number
1762593
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