Lanthanum deficiency effect in magnetic transition and transport property of La0.8-δCa0.2Mno3

Chang Seop Hong; Nam Hwi Hur; Yong Nam Choi

doi:10.1016/j.ssc.2004.06.036

Lanthanum deficiency effect in magnetic transition and transport property of La_0.8-δCa_0.2Mno₃

Chang Seop Hong, Nam Hwi Hur, Yong Nam Choi

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

12 Citations (Scopus)

Abstract

The evolution of magnetic and electrical phases in La _0.8-δCa_0.2MnO₃ was investigated in terms of La deficiency. We found that the increase of the La deficiency tends to raise the Curie temperature (T_C) in La_0.8-δCa _0.2MnO³. The FM clusters formed in compounds with large La deficiency provide percolation paths above T_C. With increasing the La defect, the transport property changes from insulating to metallic state, which is in association with the crossover from a second order to a first order magnetic phase transition in the vicinity of T_C.

Original language	English
Pages (from-to)	779-783
Number of pages	5
Journal	Solid State Communications
Volume	131
Issue number	12
DOIs	https://doi.org/10.1016/j.ssc.2004.06.036
Publication status	Published - 2004 Sept

Bibliographical note

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

A. Magnetically ordered materials
A. Perovskite manganites
D. Colossal magnetoresistance

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.ssc.2004.06.036

Cite this

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title = "Lanthanum deficiency effect in magnetic transition and transport property of La0.8-δCa0.2Mno3",

abstract = "The evolution of magnetic and electrical phases in La 0.8-δCa0.2MnO3 was investigated in terms of La deficiency. We found that the increase of the La deficiency tends to raise the Curie temperature (TC) in La0.8-δCa 0.2MnO3. The FM clusters formed in compounds with large La deficiency provide percolation paths above TC. With increasing the La defect, the transport property changes from insulating to metallic state, which is in association with the crossover from a second order to a first order magnetic phase transition in the vicinity of TC.",

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AU - Hong, Chang Seop

AU - Hur, Nam Hwi

AU - Choi, Yong Nam

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N2 - The evolution of magnetic and electrical phases in La 0.8-δCa0.2MnO3 was investigated in terms of La deficiency. We found that the increase of the La deficiency tends to raise the Curie temperature (TC) in La0.8-δCa 0.2MnO3. The FM clusters formed in compounds with large La deficiency provide percolation paths above TC. With increasing the La defect, the transport property changes from insulating to metallic state, which is in association with the crossover from a second order to a first order magnetic phase transition in the vicinity of TC.

AB - The evolution of magnetic and electrical phases in La 0.8-δCa0.2MnO3 was investigated in terms of La deficiency. We found that the increase of the La deficiency tends to raise the Curie temperature (TC) in La0.8-δCa 0.2MnO3. The FM clusters formed in compounds with large La deficiency provide percolation paths above TC. With increasing the La defect, the transport property changes from insulating to metallic state, which is in association with the crossover from a second order to a first order magnetic phase transition in the vicinity of TC.

KW - A. Magnetically ordered materials

KW - A. Perovskite manganites

KW - D. Colossal magnetoresistance

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