Colossal magnetoresistance in perovskite manganite induced by localized moment of rare earth ion

Joonghoe Dho; W. S. Kim; E. O. Chi; N. H. Hur; S. H. Park; H. C. Ri

doi:10.1016/S0038-1098(02)00775-5

Colossal magnetoresistance in perovskite manganite induced by localized moment of rare earth ion

Joonghoe Dho, W. S. Kim, E. O. Chi, N. H. Hur, S. H. Park, H. C. Ri

Department of Physics

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The magnetic and transport properties of a single crystal of Pr_0.7Ca_0.3MnO₃ 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 Pr_0.7Ca_0.3MnO₃. This unique behavior is discussed in terms of the reorientation of Pr spins that are strongly coupled with the neighboring Mn spins.

Original language	English
Pages (from-to)	143-147
Number of pages	5
Journal	Solid State Communications
Volume	125
Issue number	3-4
DOIs	https://doi.org/10.1016/S0038-1098(02)00775-5
State	Published - Jan 2003

Keywords

A. Magnetically ordered materials
D. Electronic transport

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10.1016/S0038-1098(02)00775-5

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title = "Colossal magnetoresistance in perovskite manganite induced by localized moment of rare earth ion",

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 = "A. Magnetically ordered materials, D. Electronic transport",

author = "Joonghoe Dho and Kim, {W. S.} and Chi, {E. O.} and Hur, {N. H.} and Park, {S. H.} and Ri, {H. C.}",

year = "2003",

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doi = "10.1016/S0038-1098(02)00775-5",

language = "English",

volume = "125",

pages = "143--147",

journal = "Solid State Communications",

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TY - JOUR

T1 - Colossal magnetoresistance in perovskite manganite induced by localized moment of rare earth ion

AU - Dho, Joonghoe

AU - Kim, W. S.

AU - Chi, E. O.

AU - Hur, N. H.

AU - Park, S. H.

AU - Ri, H. C.

PY - 2003/1

Y1 - 2003/1

N2 - 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.

AB - 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.

KW - A. Magnetically ordered materials

KW - D. Electronic transport

UR - http://www.scopus.com/inward/record.url?scp=0037218944&partnerID=8YFLogxK

U2 - 10.1016/S0038-1098(02)00775-5

DO - 10.1016/S0038-1098(02)00775-5

M3 - Article

AN - SCOPUS:0037218944

SN - 0038-1098

VL - 125

SP - 143

EP - 147

JO - Solid State Communications

JF - Solid State Communications

IS - 3-4

ER -

Colossal magnetoresistance in perovskite manganite induced by localized moment of rare earth ion

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Keywords

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