Zn doping of la0.91Mn0.95O3 polycrystalline manganite: Transition from metallic-to insulating-like ferromagnetic ground state

Mark Auslender; Evgeny Rosenberg; Vladimir Markovich; Gad Gorodetsky

doi:10.1016/j.jmmm.2003.12.1082

Zn doping of la_0.91Mn_0.95O₃ polycrystalline manganite: Transition from metallic-to insulating-like ferromagnetic ground state

Mark Auslender, Evgeny Rosenberg, Vladimir Markovich, Gad Gorodetsky

Department of Physics

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

2 Scopus citations

Abstract

The influence of substitution La³⁺ for Zn²⁺ on the conductivity of parent self-doped La_0.91Mn_0.95O ₃ manganite is studied. Such substitution leads to a sharp decrease of the Curie point (T_C) and induces smearing and disappearing of the metal-semiconductor transition in the vicinity of T_C with increasing of Zn concentration. A conductivity of Zn-doped La_0.91Mn _0.95O₃ is described by variable-range hopping mechanism within a wide range of temperatures. Above results are discussed in the frame of the model taking into account the change of the band structure due to structural and magnetic disorders induced by Zn impurities in parent compound.

Original language	English
Pages (from-to)	1787-1789
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	III
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1082
State	Published - 1 Jan 2004

Keywords

Band structure
Conductivity
Doped manganites
Structural and magnetic disorder

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.12.1082

Cite this

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title = "Zn doping of la0.91Mn0.95O3 polycrystalline manganite: Transition from metallic-to insulating-like ferromagnetic ground state",

abstract = "The influence of substitution La3+ for Zn2+ on the conductivity of parent self-doped La0.91Mn0.95O 3 manganite is studied. Such substitution leads to a sharp decrease of the Curie point (TC) and induces smearing and disappearing of the metal-semiconductor transition in the vicinity of TC with increasing of Zn concentration. A conductivity of Zn-doped La0.91Mn 0.95O3 is described by variable-range hopping mechanism within a wide range of temperatures. Above results are discussed in the frame of the model taking into account the change of the band structure due to structural and magnetic disorders induced by Zn impurities in parent compound.",

keywords = "Band structure, Conductivity, Doped manganites, Structural and magnetic disorder",

author = "Mark Auslender and Evgeny Rosenberg and Vladimir Markovich and Gad Gorodetsky",

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T1 - Zn doping of la0.91Mn0.95O3 polycrystalline manganite

T2 - Transition from metallic-to insulating-like ferromagnetic ground state

AU - Auslender, Mark

AU - Rosenberg, Evgeny

AU - Markovich, Vladimir

AU - Gorodetsky, Gad

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AB - The influence of substitution La3+ for Zn2+ on the conductivity of parent self-doped La0.91Mn0.95O 3 manganite is studied. Such substitution leads to a sharp decrease of the Curie point (TC) and induces smearing and disappearing of the metal-semiconductor transition in the vicinity of TC with increasing of Zn concentration. A conductivity of Zn-doped La0.91Mn 0.95O3 is described by variable-range hopping mechanism within a wide range of temperatures. Above results are discussed in the frame of the model taking into account the change of the band structure due to structural and magnetic disorders induced by Zn impurities in parent compound.

KW - Band structure

KW - Conductivity

KW - Doped manganites

KW - Structural and magnetic disorder

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