A study of la0.2Pr0.5Ca0.3MnO3 under pressure and magnetic field

Seongsu Lee; H. C. Kim; S. Y. Shim; H. C. Ri; J. G. Park

doi:10.1016/S0921-4526(02)02564-4

A study of la_0.2Pr_0.5Ca_0.3MnO₃ under pressure and magnetic field

Seongsu Lee, H. C. Kim, S. Y. Shim, H. C. Ri, J. G. Park

Department of Physics

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

Abstract

We measured the resistivity and magnetization of La_0.2Pr _0.5Ca_0.3MnO₃ polycrystals under hydrostatic pressure and magnetic fields. With increasing pressure and fields, overall resistivity values drop sharply and the metal-insulator transition temperature increases monotonically. At the same time, the resistivity data show an anomaly developing at lower temperature than T_C with increasing fields and pressure. Based on the susceptibility measurements, we suggest that this new anomaly should not be due to a thermodynamic transition but that it should be related to percolation phenomena of the metallic phase coexisting with the insulating phase.

Original language	English
Pages (from-to)	852-853
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02564-4
State	Published - May 2003

Keywords

Hydrostatic pressure
LaPrCa MnO
Magnetic field

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10.1016/S0921-4526(02)02564-4

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title = "A study of la0.2Pr0.5Ca0.3MnO3 under pressure and magnetic field",

abstract = "We measured the resistivity and magnetization of La0.2Pr 0.5Ca0.3MnO3 polycrystals under hydrostatic pressure and magnetic fields. With increasing pressure and fields, overall resistivity values drop sharply and the metal-insulator transition temperature increases monotonically. At the same time, the resistivity data show an anomaly developing at lower temperature than TC with increasing fields and pressure. Based on the susceptibility measurements, we suggest that this new anomaly should not be due to a thermodynamic transition but that it should be related to percolation phenomena of the metallic phase coexisting with the insulating phase.",

keywords = "Hydrostatic pressure, LaPrCa MnO, Magnetic field",

author = "Seongsu Lee and Kim, {H. C.} and Shim, {S. Y.} and Ri, {H. C.} and Park, {J. G.}",

year = "2003",

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doi = "10.1016/S0921-4526(02)02564-4",

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TY - JOUR

T1 - A study of la0.2Pr0.5Ca0.3MnO3 under pressure and magnetic field

AU - Lee, Seongsu

AU - Kim, H. C.

AU - Shim, S. Y.

AU - Ri, H. C.

AU - Park, J. G.

PY - 2003/5

Y1 - 2003/5

N2 - We measured the resistivity and magnetization of La0.2Pr 0.5Ca0.3MnO3 polycrystals under hydrostatic pressure and magnetic fields. With increasing pressure and fields, overall resistivity values drop sharply and the metal-insulator transition temperature increases monotonically. At the same time, the resistivity data show an anomaly developing at lower temperature than TC with increasing fields and pressure. Based on the susceptibility measurements, we suggest that this new anomaly should not be due to a thermodynamic transition but that it should be related to percolation phenomena of the metallic phase coexisting with the insulating phase.

AB - We measured the resistivity and magnetization of La0.2Pr 0.5Ca0.3MnO3 polycrystals under hydrostatic pressure and magnetic fields. With increasing pressure and fields, overall resistivity values drop sharply and the metal-insulator transition temperature increases monotonically. At the same time, the resistivity data show an anomaly developing at lower temperature than TC with increasing fields and pressure. Based on the susceptibility measurements, we suggest that this new anomaly should not be due to a thermodynamic transition but that it should be related to percolation phenomena of the metallic phase coexisting with the insulating phase.

KW - Hydrostatic pressure

KW - LaPrCa MnO

KW - Magnetic field

UR - http://www.scopus.com/inward/record.url?scp=23044492578&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(02)02564-4

DO - 10.1016/S0921-4526(02)02564-4

M3 - Article

AN - SCOPUS:23044492578

SN - 0921-4526

VL - 329-333

SP - 852

EP - 853

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - II

ER -

A study of la_0.2Pr_0.5Ca_0.3MnO₃ under pressure and magnetic field

Abstract

Keywords

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