Metal-insulator transition induced by short range magnetic ordering in mono-layered manganite

E. O. Chi; W. S. Kim; C. S. Hong; N. H. Hur; Y. N. Choi

doi:10.5012/bkcs.2003.24.5.573

Metal-insulator transition induced by short range magnetic ordering in mono-layered manganite

E. O. Chi, W. S. Kim, C. S. Hong, N. H. Hur, Y. N. Choi

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

2 Citations (Scopus)

Abstract

The structural, magnetic, and transport properties of a mono-layered manganite La_0.7Sr_1.3MnO_4+δ were investigated using variable temperature neutron powder diffraction as well as magnetization and transport measurements. The compound adopts the tetragonal I4/mmm symmetry and exhibits no magnetic reflection in the temperature region of 10 K ≤ T ≤ 300 K. A weak ferromagnetic (FM) transition occurs about 130 K, which almost coincides with the onset of a metal-insulator (M-I) transition. Extra oxygen that occupies the interstitial site between the [(La,Sr)O] layers makes the spacing between the [MnO₂] layers shorten, which enhances the inter-layer coupling and eventually leads to the M-I transition. We also found negative magneto resistance (MR) below the M-I transition temperature, which can be understood on the basis of the percolative transport via FM metallic domains in the antiferromagnetic (AFM) insulating matrix.

Original language	English
Pages (from-to)	573-578
Number of pages	6
Journal	Bulletin of the Korean Chemical Society
Volume	24
Issue number	5
DOIs	https://doi.org/10.5012/bkcs.2003.24.5.573
Publication status	Published - 2003 May 20
Externally published	Yes

Keywords

Magnetic ordering
Magnetism
Manganese oxide

ASJC Scopus subject areas

General Chemistry

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10.5012/bkcs.2003.24.5.573

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title = "Metal-insulator transition induced by short range magnetic ordering in mono-layered manganite",

abstract = "The structural, magnetic, and transport properties of a mono-layered manganite La0.7Sr1.3MnO4+δ were investigated using variable temperature neutron powder diffraction as well as magnetization and transport measurements. The compound adopts the tetragonal I4/mmm symmetry and exhibits no magnetic reflection in the temperature region of 10 K ≤ T ≤ 300 K. A weak ferromagnetic (FM) transition occurs about 130 K, which almost coincides with the onset of a metal-insulator (M-I) transition. Extra oxygen that occupies the interstitial site between the [(La,Sr)O] layers makes the spacing between the [MnO2] layers shorten, which enhances the inter-layer coupling and eventually leads to the M-I transition. We also found negative magneto resistance (MR) below the M-I transition temperature, which can be understood on the basis of the percolative transport via FM metallic domains in the antiferromagnetic (AFM) insulating matrix.",

keywords = "Magnetic ordering, Magnetism, Manganese oxide",

author = "Chi, {E. O.} and Kim, {W. S.} and Hong, {C. S.} and Hur, {N. H.} and Choi, {Y. N.}",

year = "2003",

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doi = "10.5012/bkcs.2003.24.5.573",

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TY - JOUR

T1 - Metal-insulator transition induced by short range magnetic ordering in mono-layered manganite

AU - Chi, E. O.

AU - Kim, W. S.

AU - Hong, C. S.

AU - Hur, N. H.

AU - Choi, Y. N.

PY - 2003/5/20

Y1 - 2003/5/20

N2 - The structural, magnetic, and transport properties of a mono-layered manganite La0.7Sr1.3MnO4+δ were investigated using variable temperature neutron powder diffraction as well as magnetization and transport measurements. The compound adopts the tetragonal I4/mmm symmetry and exhibits no magnetic reflection in the temperature region of 10 K ≤ T ≤ 300 K. A weak ferromagnetic (FM) transition occurs about 130 K, which almost coincides with the onset of a metal-insulator (M-I) transition. Extra oxygen that occupies the interstitial site between the [(La,Sr)O] layers makes the spacing between the [MnO2] layers shorten, which enhances the inter-layer coupling and eventually leads to the M-I transition. We also found negative magneto resistance (MR) below the M-I transition temperature, which can be understood on the basis of the percolative transport via FM metallic domains in the antiferromagnetic (AFM) insulating matrix.

AB - The structural, magnetic, and transport properties of a mono-layered manganite La0.7Sr1.3MnO4+δ were investigated using variable temperature neutron powder diffraction as well as magnetization and transport measurements. The compound adopts the tetragonal I4/mmm symmetry and exhibits no magnetic reflection in the temperature region of 10 K ≤ T ≤ 300 K. A weak ferromagnetic (FM) transition occurs about 130 K, which almost coincides with the onset of a metal-insulator (M-I) transition. Extra oxygen that occupies the interstitial site between the [(La,Sr)O] layers makes the spacing between the [MnO2] layers shorten, which enhances the inter-layer coupling and eventually leads to the M-I transition. We also found negative magneto resistance (MR) below the M-I transition temperature, which can be understood on the basis of the percolative transport via FM metallic domains in the antiferromagnetic (AFM) insulating matrix.

KW - Magnetic ordering

KW - Magnetism

KW - Manganese oxide

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U2 - 10.5012/bkcs.2003.24.5.573

DO - 10.5012/bkcs.2003.24.5.573

M3 - Article

AN - SCOPUS:0043093948

SN - 0253-2964

VL - 24

SP - 573

EP - 578

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 5

ER -

Metal-insulator transition induced by short range magnetic ordering in mono-layered manganite

Abstract

Keywords

ASJC Scopus subject areas

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