A comparison of two-layered La2.5-2xK0.5+2xMn2O7+δ and La1-xKxMnO3+δ polycrystals for the magnetoresistance effect

W. Zhong; W. Liu; X. S. Liu; H. Y. Jiang; C. T. Au; Y. W. Du

doi:10.1002/pssa.200305934

A comparison of two-layered La_2.5-2xK_0.5+2xMn₂O_7+δ and La_1-xK_xMnO_3+δ polycrystals for the magnetoresistance effect

W. Zhong^*, W. Liu, X. S. Liu, H. Y. Jiang, C. T. Au, Y. W. Du

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

3 Citations (Scopus)

Abstract

Polycrystalline two-layered La_2.5-2xK_0.5+2xMn₂O_7+δ (x = 0.075) and ABO₃-type La_1-xK_xMnO_3+δ (x = 0.075) have been prepared by a modified sol-gel method and comparisons between their structures and magnetic and electric properties have been made. Compared with the La_1-xK_xMnO_3+δ compound, a large deviation between the metal-insulator transition temperature (T_ρ) and the magnetic transition temperature (T_C) and a characteristic low-temperature magnetoresistance effect under a relatively low magnetic field have been observed in the polycrystalline two-layered La_2.5-2xK_0.5+2xMn₂O_7+δ compound.

Original language	English
Pages (from-to)	440-446
Number of pages	7
Journal	Physica Status Solidi (A) Applied Research
Volume	195
Issue number	2
DOIs	https://doi.org/10.1002/pssa.200305934
Publication status	Published - Jan 2003

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "A comparison of two-layered La2.5-2xK0.5+2xMn2O7+δ and La1-xKxMnO3+δ polycrystals for the magnetoresistance effect",

abstract = "Polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ (x = 0.075) and ABO3-type La1-xKxMnO3+δ (x = 0.075) have been prepared by a modified sol-gel method and comparisons between their structures and magnetic and electric properties have been made. Compared with the La1-xKxMnO3+δ compound, a large deviation between the metal-insulator transition temperature (Tρ) and the magnetic transition temperature (TC) and a characteristic low-temperature magnetoresistance effect under a relatively low magnetic field have been observed in the polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ compound.",

author = "W. Zhong and W. Liu and Liu, {X. S.} and Jiang, {H. Y.} and Au, {C. T.} and Du, {Y. W.}",

year = "2003",

month = jan,

doi = "10.1002/pssa.200305934",

language = "English",

volume = "195",

pages = "440--446",

journal = "Physica Status Solidi (A) Applied Research",

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T1 - A comparison of two-layered La2.5-2xK0.5+2xMn2O7+δ and La1-xKxMnO3+δ polycrystals for the magnetoresistance effect

AU - Zhong, W.

AU - Liu, W.

AU - Liu, X. S.

AU - Jiang, H. Y.

AU - Au, C. T.

AU - Du, Y. W.

PY - 2003/1

Y1 - 2003/1

N2 - Polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ (x = 0.075) and ABO3-type La1-xKxMnO3+δ (x = 0.075) have been prepared by a modified sol-gel method and comparisons between their structures and magnetic and electric properties have been made. Compared with the La1-xKxMnO3+δ compound, a large deviation between the metal-insulator transition temperature (Tρ) and the magnetic transition temperature (TC) and a characteristic low-temperature magnetoresistance effect under a relatively low magnetic field have been observed in the polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ compound.

AB - Polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ (x = 0.075) and ABO3-type La1-xKxMnO3+δ (x = 0.075) have been prepared by a modified sol-gel method and comparisons between their structures and magnetic and electric properties have been made. Compared with the La1-xKxMnO3+δ compound, a large deviation between the metal-insulator transition temperature (Tρ) and the magnetic transition temperature (TC) and a characteristic low-temperature magnetoresistance effect under a relatively low magnetic field have been observed in the polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ compound.

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DO - 10.1002/pssa.200305934

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VL - 195

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JO - Physica Status Solidi (A) Applied Research

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A comparison of two-layered La_2.5-2xK_0.5+2xMn₂O_7+δ and La_1-xK_xMnO_3+δ polycrystals for the magnetoresistance effect

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