Effect of oxygen non-stoichiometry on magnetic and electrical transport properties of La0.67Sr0.33MnO3

Guoyan Huo; Qian Su; He Li; Zhenxing Li; Yating Chang

doi:10.1016/j.cap.2020.03.013

Effect of oxygen non-stoichiometry on magnetic and electrical transport properties of La_0.67Sr_0.33MnO₃

Guoyan Huo^*, Qian Su, He Li, Zhenxing Li, Yating Chang

^*Corresponding author for this work

Hebei University

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

5 Citations (Scopus)

Abstract

The effect of oxygen deficiency and oxygen excess on the magnetic and electrical transport properties of La_0.67Sr_0.33MnO₃ has been investigated. The thermal and isothermal magnetization measurement results show that the Curie temperature and saturation magnetization of oxygen deficient sample (defined as A) are higher than those oxygen excess sample (defined as B). The electrical resistivity of A is lower than that of B in studied temperature range. The magnetoresistance (MR) of B is larger than that of A in the temperature range from 280 to 360 K, which agrees with the magnetic field needed full spin polarization at room temperature. The colossal MR (CMR) around transition temperature from ferromagnetic metal to paramagnetic insulator (T_MI) for A is larger than that for B, which arises from assistance of stronger lattice deformation for A.

Original language	English
Pages (from-to)	739-745
Number of pages	7
Journal	Current Applied Physics
Volume	20
Issue number	6
DOIs	https://doi.org/10.1016/j.cap.2020.03.013
Publication status	Published - Jun 2020
Externally published	Yes

Keywords

Electrical transport behavior
Magnetic properties
Magnetoresistance
Oxygen non-stoichiometry

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10.1016/j.cap.2020.03.013

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title = "Effect of oxygen non-stoichiometry on magnetic and electrical transport properties of La0.67Sr0.33MnO3 ",

abstract = "The effect of oxygen deficiency and oxygen excess on the magnetic and electrical transport properties of La0.67Sr0.33MnO3 has been investigated. The thermal and isothermal magnetization measurement results show that the Curie temperature and saturation magnetization of oxygen deficient sample (defined as A) are higher than those oxygen excess sample (defined as B). The electrical resistivity of A is lower than that of B in studied temperature range. The magnetoresistance (MR) of B is larger than that of A in the temperature range from 280 to 360 K, which agrees with the magnetic field needed full spin polarization at room temperature. The colossal MR (CMR) around transition temperature from ferromagnetic metal to paramagnetic insulator (TMI) for A is larger than that for B, which arises from assistance of stronger lattice deformation for A.",

keywords = "Electrical transport behavior, Magnetic properties, Magnetoresistance, Oxygen non-stoichiometry",

author = "Guoyan Huo and Qian Su and He Li and Zhenxing Li and Yating Chang",

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year = "2020",

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doi = "10.1016/j.cap.2020.03.013",

language = "English",

volume = "20",

pages = "739--745",

journal = "Current Applied Physics",

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TY - JOUR

T1 - Effect of oxygen non-stoichiometry on magnetic and electrical transport properties of La0.67Sr0.33MnO3

AU - Huo, Guoyan

AU - Su, Qian

AU - Li, He

AU - Li, Zhenxing

AU - Chang, Yating

PY - 2020/6

Y1 - 2020/6

N2 - The effect of oxygen deficiency and oxygen excess on the magnetic and electrical transport properties of La0.67Sr0.33MnO3 has been investigated. The thermal and isothermal magnetization measurement results show that the Curie temperature and saturation magnetization of oxygen deficient sample (defined as A) are higher than those oxygen excess sample (defined as B). The electrical resistivity of A is lower than that of B in studied temperature range. The magnetoresistance (MR) of B is larger than that of A in the temperature range from 280 to 360 K, which agrees with the magnetic field needed full spin polarization at room temperature. The colossal MR (CMR) around transition temperature from ferromagnetic metal to paramagnetic insulator (TMI) for A is larger than that for B, which arises from assistance of stronger lattice deformation for A.

AB - The effect of oxygen deficiency and oxygen excess on the magnetic and electrical transport properties of La0.67Sr0.33MnO3 has been investigated. The thermal and isothermal magnetization measurement results show that the Curie temperature and saturation magnetization of oxygen deficient sample (defined as A) are higher than those oxygen excess sample (defined as B). The electrical resistivity of A is lower than that of B in studied temperature range. The magnetoresistance (MR) of B is larger than that of A in the temperature range from 280 to 360 K, which agrees with the magnetic field needed full spin polarization at room temperature. The colossal MR (CMR) around transition temperature from ferromagnetic metal to paramagnetic insulator (TMI) for A is larger than that for B, which arises from assistance of stronger lattice deformation for A.

KW - Electrical transport behavior

KW - Magnetic properties

KW - Magnetoresistance

KW - Oxygen non-stoichiometry

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DO - 10.1016/j.cap.2020.03.013

M3 - Article

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SN - 1567-1739

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EP - 745

JO - Current Applied Physics

JF - Current Applied Physics

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ER -

Effect of oxygen non-stoichiometry on magnetic and electrical transport properties of La_0.67Sr_0.33MnO₃

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