Pressure effect on magnetic and transport properties of Zn doped La0.91Mn0.95O3 manganite

V. Markovich; E. Rozenberg; G. Gorodetsky; D. Mogilyansky; B. Revzin; J. Pelleg

doi:10.1063/1.1390303

Pressure effect on magnetic and transport properties of Zn doped La_0.91Mn_0.95O₃ manganite

V. Markovich, E. Rozenberg, G. Gorodetsky, D. Mogilyansky, B. Revzin, J. Pelleg

Department of Physics

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Abstract

The effect of hydrostatic pressure P up to 1 GPa and applied magnetic fields H up to 1.5 T on the magnetic and transport properties of La_0.91Mn_0.95O₃ doped with 7 at. % Zn at the temperature range of 15-350 K is reported. It was found that the doping by Zn changes the low temperature conductance from a metallic-like to a nonmetallic one. Doping by Zn of the initial self-doped sample shifts the Curie temperature from 252 to 204 K. In both compounds the applied pressure enhances the ferromagnetic coupling and Curie temperature. The pressure coefficients of the Curie temperature are equal for both compounds being dT_cldP ≈ 13 K/GPa. Above the Curie temperature the resistivity of Zn-doped manganite obeys Mott's law rather than the Arrhenius behavior. Both parameters, A and T₀ of Mott localization law decrease under pressure indicating a reduction in the localization energy.

Original language	English
Pages (from-to)	2347-2351
Number of pages	5
Journal	Journal of Applied Physics
Volume	90
Issue number	5
DOIs	https://doi.org/10.1063/1.1390303
State	Published - 1 Sep 2001

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General Physics and Astronomy

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title = "Pressure effect on magnetic and transport properties of Zn doped La0.91Mn0.95O3 manganite",

abstract = "The effect of hydrostatic pressure P up to 1 GPa and applied magnetic fields H up to 1.5 T on the magnetic and transport properties of La0.91Mn0.95O3 doped with 7 at. % Zn at the temperature range of 15-350 K is reported. It was found that the doping by Zn changes the low temperature conductance from a metallic-like to a nonmetallic one. Doping by Zn of the initial self-doped sample shifts the Curie temperature from 252 to 204 K. In both compounds the applied pressure enhances the ferromagnetic coupling and Curie temperature. The pressure coefficients of the Curie temperature are equal for both compounds being dTcldP ≈ 13 K/GPa. Above the Curie temperature the resistivity of Zn-doped manganite obeys Mott's law rather than the Arrhenius behavior. Both parameters, A and T0 of Mott localization law decrease under pressure indicating a reduction in the localization energy.",

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T1 - Pressure effect on magnetic and transport properties of Zn doped La0.91Mn0.95O3 manganite

AU - Markovich, V.

AU - Rozenberg, E.

AU - Gorodetsky, G.

AU - Mogilyansky, D.

AU - Revzin, B.

AU - Pelleg, J.

PY - 2001/9/1

Y1 - 2001/9/1

N2 - The effect of hydrostatic pressure P up to 1 GPa and applied magnetic fields H up to 1.5 T on the magnetic and transport properties of La0.91Mn0.95O3 doped with 7 at. % Zn at the temperature range of 15-350 K is reported. It was found that the doping by Zn changes the low temperature conductance from a metallic-like to a nonmetallic one. Doping by Zn of the initial self-doped sample shifts the Curie temperature from 252 to 204 K. In both compounds the applied pressure enhances the ferromagnetic coupling and Curie temperature. The pressure coefficients of the Curie temperature are equal for both compounds being dTcldP ≈ 13 K/GPa. Above the Curie temperature the resistivity of Zn-doped manganite obeys Mott's law rather than the Arrhenius behavior. Both parameters, A and T0 of Mott localization law decrease under pressure indicating a reduction in the localization energy.

AB - The effect of hydrostatic pressure P up to 1 GPa and applied magnetic fields H up to 1.5 T on the magnetic and transport properties of La0.91Mn0.95O3 doped with 7 at. % Zn at the temperature range of 15-350 K is reported. It was found that the doping by Zn changes the low temperature conductance from a metallic-like to a nonmetallic one. Doping by Zn of the initial self-doped sample shifts the Curie temperature from 252 to 204 K. In both compounds the applied pressure enhances the ferromagnetic coupling and Curie temperature. The pressure coefficients of the Curie temperature are equal for both compounds being dTcldP ≈ 13 K/GPa. Above the Curie temperature the resistivity of Zn-doped manganite obeys Mott's law rather than the Arrhenius behavior. Both parameters, A and T0 of Mott localization law decrease under pressure indicating a reduction in the localization energy.

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JF - Journal of Applied Physics

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Pressure effect on magnetic and transport properties of Zn doped La_0.91Mn_0.95O₃ manganite

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