Dependence of magnetoelectric properties of La0.8Ba0.2MnO3 on Mn valence of oxide precursors

Kuo Jiang; He Fei Li; Wen Ma; Sheng Kai Gong

doi:10.7498/aps.54.4374

Dependence of magnetoelectric properties of La_0.8Ba_0.2MnO₃ on Mn valence of oxide precursors

Kuo Jiang
, He Fei Li
, Wen Ma
, Sheng Kai Gong^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

2 Scopus citations

Abstract

The influence of temperature (in the range of 2-390 K) on the magnetic moment, and magnetoresistance has been investigated in this paper. It is found that the magnetoelectric properties, particularly the Curie temperature T_C, the metal-insulator transition temperature, T_mi, and the maximum magnetoresistance T_MR, of La_0.8Ba_0.2MnO₃ are closely related to the valence of Mn in the oxides. La_0.8Ba_0.2MnO₃ synthesized with 2⁺ Mn oxides exhibited the lower resistivity, and a Curie temperature closer to room temperature (290K) compared with that synthesized with 3⁺ Mn oxides. It can be concluded that the magnetoelectric properties of La_0.8Ba_0.2MnO₃ are dependent on the Mn valence of oxides. This could be attributed to the influence of oxygen vacancy concentration variation on the Mn⁴⁺/Mn³⁺ ratio in the resultant compounds during solid sintering reaction, which results from the valence difference of oxide precursors.

Original language	English
Pages (from-to)	4374-4378
Number of pages	5
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	54
Issue number	9
DOIs	https://doi.org/10.7498/aps.54.4374
State	Published - Sep 2005

Keywords

Curie temperature
Magnetoresistance
Metal-insulator transition
Valence

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@article{02a7e77a4c2e4f4093f86514491669aa,

title = "Dependence of magnetoelectric properties of La0.8Ba0.2MnO3 on Mn valence of oxide precursors",

abstract = "The influence of temperature (in the range of 2-390 K) on the magnetic moment, and magnetoresistance has been investigated in this paper. It is found that the magnetoelectric properties, particularly the Curie temperature TC, the metal-insulator transition temperature, Tmi, and the maximum magnetoresistance TMR, of La0.8Ba0.2MnO3 are closely related to the valence of Mn in the oxides. La0.8Ba0.2MnO3 synthesized with 2+ Mn oxides exhibited the lower resistivity, and a Curie temperature closer to room temperature (290K) compared with that synthesized with 3+ Mn oxides. It can be concluded that the magnetoelectric properties of La0.8Ba0.2MnO3 are dependent on the Mn valence of oxides. This could be attributed to the influence of oxygen vacancy concentration variation on the Mn4+/Mn3+ ratio in the resultant compounds during solid sintering reaction, which results from the valence difference of oxide precursors.",

keywords = "Curie temperature, Magnetoresistance, Metal-insulator transition, Valence",

author = "Kuo Jiang and Li, \{He Fei\} and Wen Ma and Gong, \{Sheng Kai\}",

year = "2005",

month = sep,

doi = "10.7498/aps.54.4374",

language = "英语",

volume = "54",

pages = "4374--4378",

journal = "Wuli Xuebao/Acta Physica Sinica",

issn = "1000-3290",

publisher = "Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences",

number = "9",

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TY - JOUR

T1 - Dependence of magnetoelectric properties of La0.8Ba0.2MnO3 on Mn valence of oxide precursors

AU - Jiang, Kuo

AU - Li, He Fei

AU - Ma, Wen

AU - Gong, Sheng Kai

PY - 2005/9

Y1 - 2005/9

N2 - The influence of temperature (in the range of 2-390 K) on the magnetic moment, and magnetoresistance has been investigated in this paper. It is found that the magnetoelectric properties, particularly the Curie temperature TC, the metal-insulator transition temperature, Tmi, and the maximum magnetoresistance TMR, of La0.8Ba0.2MnO3 are closely related to the valence of Mn in the oxides. La0.8Ba0.2MnO3 synthesized with 2+ Mn oxides exhibited the lower resistivity, and a Curie temperature closer to room temperature (290K) compared with that synthesized with 3+ Mn oxides. It can be concluded that the magnetoelectric properties of La0.8Ba0.2MnO3 are dependent on the Mn valence of oxides. This could be attributed to the influence of oxygen vacancy concentration variation on the Mn4+/Mn3+ ratio in the resultant compounds during solid sintering reaction, which results from the valence difference of oxide precursors.

AB - The influence of temperature (in the range of 2-390 K) on the magnetic moment, and magnetoresistance has been investigated in this paper. It is found that the magnetoelectric properties, particularly the Curie temperature TC, the metal-insulator transition temperature, Tmi, and the maximum magnetoresistance TMR, of La0.8Ba0.2MnO3 are closely related to the valence of Mn in the oxides. La0.8Ba0.2MnO3 synthesized with 2+ Mn oxides exhibited the lower resistivity, and a Curie temperature closer to room temperature (290K) compared with that synthesized with 3+ Mn oxides. It can be concluded that the magnetoelectric properties of La0.8Ba0.2MnO3 are dependent on the Mn valence of oxides. This could be attributed to the influence of oxygen vacancy concentration variation on the Mn4+/Mn3+ ratio in the resultant compounds during solid sintering reaction, which results from the valence difference of oxide precursors.

KW - Curie temperature

KW - Magnetoresistance

KW - Metal-insulator transition

KW - Valence

UR - https://www.scopus.com/pages/publications/24744456912

U2 - 10.7498/aps.54.4374

DO - 10.7498/aps.54.4374

M3 - 文章

AN - SCOPUS:24744456912

SN - 1000-3290

VL - 54

SP - 4374

EP - 4378

JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

IS - 9

ER -

Dependence of magnetoelectric properties of La_0.8Ba_0.2MnO₃ on Mn valence of oxide precursors

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