Low field magnetoresistance in intrinsic granular system La1-xBaxMnO3

Y. S. Nam; H. L. Ju; C. W. Park

doi:10.1016/S0038-1098(01)00291-5

Low field magnetoresistance in intrinsic granular system La_1-xBa_xMnO₃

Y. S. Nam, H. L. Ju, C. W. Park

Department of Physics

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

10 Citations (Scopus)

Abstract

The La_1-xBa_xMnO₃ for 0.5≤x was found to be an intrinsic magnetic granular system composed of ferromagnetic/metallic phase and insulating phase. Owing to the magnetic granularity, the La_1-xBa_xMnO₃ system for 0.5≤x shows a three-dimensional percolation-type conduction behavior with a percolation threshold of x_p=∼0.85 (i.e. ferromagnetic volume fraction, θ_p(%), of ∼17%) and a large low field magnetoresistance (MR). The MR of 12-16% at 500 Oe and 77 K was found in the granular ferromagnetic region over a wide range of doping 0.5≤x≤0.75, and the MR was found to become small for x<0.5 and x>0.75.

Original language	English
Pages (from-to)	613-618
Number of pages	6
Journal	Solid State Communications
Volume	119
Issue number	10-11
DOIs	https://doi.org/10.1016/S0038-1098(01)00291-5
Publication status	Published - 2001 Aug 29

Bibliographical note

Funding Information:
We thank Drs E. O. Ji and N. H. Huhr for their helps in X-ray analysis. This work was supported by grant No. 2000-2-12100-002-3 from the Basic Research Program of the Korea Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/S0038-1098(01)00291-5

Cite this

@article{61d8373b72b64234b725b9f678700994,

title = "Low field magnetoresistance in intrinsic granular system La1-xBaxMnO3",

abstract = "The La1-xBaxMnO3 for 0.5≤x was found to be an intrinsic magnetic granular system composed of ferromagnetic/metallic phase and insulating phase. Owing to the magnetic granularity, the La1-xBaxMnO3 system for 0.5≤x shows a three-dimensional percolation-type conduction behavior with a percolation threshold of xp=∼0.85 (i.e. ferromagnetic volume fraction, θp(%), of ∼17%) and a large low field magnetoresistance (MR). The MR of 12-16% at 500 Oe and 77 K was found in the granular ferromagnetic region over a wide range of doping 0.5≤x≤0.75, and the MR was found to become small for x<0.5 and x>0.75.",

author = "Nam, {Y. S.} and Ju, {H. L.} and Park, {C. W.}",

note = "Funding Information: We thank Drs E. O. Ji and N. H. Huhr for their helps in X-ray analysis. This work was supported by grant No. 2000-2-12100-002-3 from the Basic Research Program of the Korea Science and Engineering Foundation.",

year = "2001",

month = aug,

day = "29",

doi = "10.1016/S0038-1098(01)00291-5",

language = "English",

volume = "119",

pages = "613--618",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

number = "10-11",

}

TY - JOUR

T1 - Low field magnetoresistance in intrinsic granular system La1-xBaxMnO3

AU - Nam, Y. S.

AU - Ju, H. L.

AU - Park, C. W.

N1 - Funding Information: We thank Drs E. O. Ji and N. H. Huhr for their helps in X-ray analysis. This work was supported by grant No. 2000-2-12100-002-3 from the Basic Research Program of the Korea Science and Engineering Foundation.

PY - 2001/8/29

Y1 - 2001/8/29

N2 - The La1-xBaxMnO3 for 0.5≤x was found to be an intrinsic magnetic granular system composed of ferromagnetic/metallic phase and insulating phase. Owing to the magnetic granularity, the La1-xBaxMnO3 system for 0.5≤x shows a three-dimensional percolation-type conduction behavior with a percolation threshold of xp=∼0.85 (i.e. ferromagnetic volume fraction, θp(%), of ∼17%) and a large low field magnetoresistance (MR). The MR of 12-16% at 500 Oe and 77 K was found in the granular ferromagnetic region over a wide range of doping 0.5≤x≤0.75, and the MR was found to become small for x<0.5 and x>0.75.

AB - The La1-xBaxMnO3 for 0.5≤x was found to be an intrinsic magnetic granular system composed of ferromagnetic/metallic phase and insulating phase. Owing to the magnetic granularity, the La1-xBaxMnO3 system for 0.5≤x shows a three-dimensional percolation-type conduction behavior with a percolation threshold of xp=∼0.85 (i.e. ferromagnetic volume fraction, θp(%), of ∼17%) and a large low field magnetoresistance (MR). The MR of 12-16% at 500 Oe and 77 K was found in the granular ferromagnetic region over a wide range of doping 0.5≤x≤0.75, and the MR was found to become small for x<0.5 and x>0.75.

UR - http://www.scopus.com/inward/record.url?scp=0035968415&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035968415&partnerID=8YFLogxK

U2 - 10.1016/S0038-1098(01)00291-5

DO - 10.1016/S0038-1098(01)00291-5

M3 - Article

AN - SCOPUS:0035968415

VL - 119

SP - 613

EP - 618

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

IS - 10-11

ER -