Giant magnetoresistance in granular perovskite La0.8Sr0.2MnO3

Ning Zhang; Wei Ping Ding; Zai Bin Guo; Wei Zhong; Kai He Du; You Wei Du

doi:10.1088/0256-307X/14/3/019

Giant magnetoresistance in granular perovskite La_0.8Sr_0.2MnO₃

Ning Zhang, Wei Ping Ding, Zai Bin Guo, Wei Zhong, Kai He Du, You Wei Du

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Abstract

The electric and magnetic properties in granular perovskite La_0.8Sr_0.2MnO₃ have been investigated. A giant magnetoresistance (GMR) has been observed at temperatures well below T_c, the Curie temperature, associated with crystal intrinsic magnetic properties. The granular GMR effect is also isotropic but shows some characteristics different from those in the films and crystals of similar perovskites. This suggests an effect of interfacial spin-dependent tunneling in the granular perovskite at temperatures much lower than T_c. In addition, with the reduction of grain size, an evident superparamagnetic behavior has been observed.

Original language	English (US)
Pages (from-to)	229-232
Number of pages	4
Journal	Chinese Physics Letters
Volume	14
Issue number	3
DOIs	https://doi.org/10.1088/0256-307X/14/3/019
State	Published - 1997
Externally published	Yes

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General Physics and Astronomy

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10.1088/0256-307X/14/3/019

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title = "Giant magnetoresistance in granular perovskite La0.8Sr0.2MnO3",

abstract = "The electric and magnetic properties in granular perovskite La0.8Sr0.2MnO3 have been investigated. A giant magnetoresistance (GMR) has been observed at temperatures well below Tc, the Curie temperature, associated with crystal intrinsic magnetic properties. The granular GMR effect is also isotropic but shows some characteristics different from those in the films and crystals of similar perovskites. This suggests an effect of interfacial spin-dependent tunneling in the granular perovskite at temperatures much lower than Tc. In addition, with the reduction of grain size, an evident superparamagnetic behavior has been observed.",

author = "Ning Zhang and Ding, {Wei Ping} and Guo, {Zai Bin} and Wei Zhong and Du, {Kai He} and Du, {You Wei}",

year = "1997",

doi = "10.1088/0256-307X/14/3/019",

language = "English (US)",

volume = "14",

pages = "229--232",

journal = "Chinese Physics Letters",

issn = "0256-307X",

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TY - JOUR

T1 - Giant magnetoresistance in granular perovskite La0.8Sr0.2MnO3

AU - Zhang, Ning

AU - Ding, Wei Ping

AU - Guo, Zai Bin

AU - Zhong, Wei

AU - Du, Kai He

AU - Du, You Wei

PY - 1997

Y1 - 1997

N2 - The electric and magnetic properties in granular perovskite La0.8Sr0.2MnO3 have been investigated. A giant magnetoresistance (GMR) has been observed at temperatures well below Tc, the Curie temperature, associated with crystal intrinsic magnetic properties. The granular GMR effect is also isotropic but shows some characteristics different from those in the films and crystals of similar perovskites. This suggests an effect of interfacial spin-dependent tunneling in the granular perovskite at temperatures much lower than Tc. In addition, with the reduction of grain size, an evident superparamagnetic behavior has been observed.

AB - The electric and magnetic properties in granular perovskite La0.8Sr0.2MnO3 have been investigated. A giant magnetoresistance (GMR) has been observed at temperatures well below Tc, the Curie temperature, associated with crystal intrinsic magnetic properties. The granular GMR effect is also isotropic but shows some characteristics different from those in the films and crystals of similar perovskites. This suggests an effect of interfacial spin-dependent tunneling in the granular perovskite at temperatures much lower than Tc. In addition, with the reduction of grain size, an evident superparamagnetic behavior has been observed.

UR - http://www.scopus.com/inward/record.url?scp=0031325168&partnerID=8YFLogxK

U2 - 10.1088/0256-307X/14/3/019

DO - 10.1088/0256-307X/14/3/019

M3 - Article

AN - SCOPUS:0031325168

SN - 0256-307X

VL - 14

SP - 229

EP - 232

JO - Chinese Physics Letters

JF - Chinese Physics Letters

IS - 3

ER -

Giant magnetoresistance in granular perovskite La_0.8Sr_0.2MnO₃

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