Effect of Mn-site Si substitution on magnetic, transport properties and colossal magnetoresistance in La2/3Ca1/3Mn1-xSixO3 (x=0.05-0.25) system

Lingwei Li; Katsuhiko Nishimura; Masakazu Fujii; Katsunori Mori

doi:10.1016/j.ssc.2007.07.033

Effect of Mn-site Si substitution on magnetic, transport properties and colossal magnetoresistance in La_2/3Ca_1/3Mn_1-xSi_xO₃ (x=0.05-0.25) system

Lingwei Li^*, Katsuhiko Nishimura, Masakazu Fujii, Katsunori Mori

^*Corresponding author for this work

Materials Design and Engineering

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

30 Scopus citations

Abstract

A series of single phased polycrystalline samples of La_2/3Ca_1/3Mn_1-xSi_xO₃ (x = 0.05 - 0.25) system have been successfully prepared. The magnetic, transport properties and magnetoresistance effect of this series have been systematically investigated. The Curie temperature T_C decreases gradually with increasing Si content x. The magnetization M is suppressed and the PM-FM transition is broadened with increasing x. The saturation magnetic moments M_s both from experimental and spin-only theoretical estimations decrease gradually with increasing x. The Si substituted on Mn site introduces extraordinary electrical transport properties, characterized by the double peaks and low temperature minimum behavior. Moreover, the substitution of Si indeed enhances the colossal magnetoresistance (CMR) effect in the perovskite manganite materials.

Original language	English
Pages (from-to)	10-14
Number of pages	5
Journal	Solid State Communications
Volume	144
Issue number	1-2
DOIs	https://doi.org/10.1016/j.ssc.2007.07.033
State	Published - 2007/10

Keywords

A. Manganites
D. Colossal magnetoresistance
D. Double resistivity peaks

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.ssc.2007.07.033

Cite this

@article{d2dbc9dd67b0468eac2508b8593e3a8c,

title = "Effect of Mn-site Si substitution on magnetic, transport properties and colossal magnetoresistance in La2/3Ca1/3Mn1-xSixO3 (x=0.05-0.25) system",

abstract = "A series of single phased polycrystalline samples of La2/3Ca1/3Mn1-xSixO3 (x = 0.05 - 0.25) system have been successfully prepared. The magnetic, transport properties and magnetoresistance effect of this series have been systematically investigated. The Curie temperature TC decreases gradually with increasing Si content x. The magnetization M is suppressed and the PM-FM transition is broadened with increasing x. The saturation magnetic moments Ms both from experimental and spin-only theoretical estimations decrease gradually with increasing x. The Si substituted on Mn site introduces extraordinary electrical transport properties, characterized by the double peaks and low temperature minimum behavior. Moreover, the substitution of Si indeed enhances the colossal magnetoresistance (CMR) effect in the perovskite manganite materials.",

keywords = "A. Manganites, D. Colossal magnetoresistance, D. Double resistivity peaks",

author = "Lingwei Li and Katsuhiko Nishimura and Masakazu Fujii and Katsunori Mori",

note = "Funding Information: This work is supported by the Takahashi Industrial and Economic Research Foundation.",

year = "2007",

month = oct,

doi = "10.1016/j.ssc.2007.07.033",

language = "英語",

volume = "144",

pages = "10--14",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Effect of Mn-site Si substitution on magnetic, transport properties and colossal magnetoresistance in La2/3Ca1/3Mn1-xSixO3 (x=0.05-0.25) system

AU - Li, Lingwei

AU - Nishimura, Katsuhiko

AU - Fujii, Masakazu

AU - Mori, Katsunori

N1 - Funding Information: This work is supported by the Takahashi Industrial and Economic Research Foundation.

PY - 2007/10

Y1 - 2007/10

N2 - A series of single phased polycrystalline samples of La2/3Ca1/3Mn1-xSixO3 (x = 0.05 - 0.25) system have been successfully prepared. The magnetic, transport properties and magnetoresistance effect of this series have been systematically investigated. The Curie temperature TC decreases gradually with increasing Si content x. The magnetization M is suppressed and the PM-FM transition is broadened with increasing x. The saturation magnetic moments Ms both from experimental and spin-only theoretical estimations decrease gradually with increasing x. The Si substituted on Mn site introduces extraordinary electrical transport properties, characterized by the double peaks and low temperature minimum behavior. Moreover, the substitution of Si indeed enhances the colossal magnetoresistance (CMR) effect in the perovskite manganite materials.

AB - A series of single phased polycrystalline samples of La2/3Ca1/3Mn1-xSixO3 (x = 0.05 - 0.25) system have been successfully prepared. The magnetic, transport properties and magnetoresistance effect of this series have been systematically investigated. The Curie temperature TC decreases gradually with increasing Si content x. The magnetization M is suppressed and the PM-FM transition is broadened with increasing x. The saturation magnetic moments Ms both from experimental and spin-only theoretical estimations decrease gradually with increasing x. The Si substituted on Mn site introduces extraordinary electrical transport properties, characterized by the double peaks and low temperature minimum behavior. Moreover, the substitution of Si indeed enhances the colossal magnetoresistance (CMR) effect in the perovskite manganite materials.

KW - A. Manganites

KW - D. Colossal magnetoresistance

KW - D. Double resistivity peaks

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U2 - 10.1016/j.ssc.2007.07.033

DO - 10.1016/j.ssc.2007.07.033

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SN - 0038-1098

VL - 144

SP - 10

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JO - Solid State Communications

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