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

Korea Research Institute of Standards and Science
Korea Basic Science Institute

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",

month = jan,

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

language = "English",

volume = "125",

pages = "143--147",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

number = "3-4",

}

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 - https://www.scopus.com/pages/publications/0037218944

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

Abstract

Keywords

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