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Transport behavior and mechanism of conduction of simultaneously substituted Y and Fe in La0.7Ba0.3MnO3 perovskite

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Title: Transport behavior and mechanism of conduction of simultaneously substituted Y and Fe in La0.7Ba0.3MnO3 perovskite
Authors: Abdelkhalek, Sonia Ben1, Kallel, Nabil1,2 Nabil.Kallel@fsm.rnu.tn, Kallel, Sami1, Guizouarn, Thierry3, Peña, Octavio3, Oumezzine, Mohamed1
Source: Physica B. Nov2011, Vol. 406 Issue 21, p4060-4067. 8p.
Subjects: Hopping conduction, Electric conductivity, Lanthanum compounds, Yttrium, Iron, Perovskite, Polarons, Semiconductors
Abstract: Abstract: The electrical properties and the mechanism of conduction of the simultaneously substituted La0.7−x Y x Ba0.3Mn1−x Fe x O3 perovskite (0≤x≤0.30) have been studied. The insertion of Y3+ and Fe3+ ions in the parent compound La0.7Ba0.3MnO3 leads to an increase of the resistivity. The undoped sample (x=0) shows a metallic behavior, which can be fitted by the relation ρ(T)=ρ 0+ρ 2T2+ρ 4.5T4.5, indicating the importance of electron–magnon scattering effects in this material. All the other samples (x≥0.10) are semiconductors throughout the studied temperature range (80–290K). Several models have been used to fit their temperature-dependent resistivity: thermal activation, adiabatic nearest-neighbor hopping of small polarons (Holstein theory) and variable range hopping (VRH) models. The fits show that the electronic transport in semiconducting La0.7−x Y x Ba0.3Mn1−x Fe x O3 is well described and dominated by the VRH mechanism, for which the hopping distance (a) grows with increasing Fe3+ doping, thus increasing the average hopping energy W. [Copyright &y& Elsevier]
Copyright of Physica B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 65342286
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PubTypeId: academicJournal
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  Data: <searchLink fieldCode="AR" term="%22Abdelkhalek%2C+Sonia+Ben%22">Abdelkhalek, Sonia Ben</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kallel%2C+Nabil%22">Kallel, Nabil</searchLink><relatesTo>1,2</relatesTo><i> Nabil.Kallel@fsm.rnu.tn</i><br /><searchLink fieldCode="AR" term="%22Kallel%2C+Sami%22">Kallel, Sami</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Guizouarn%2C+Thierry%22">Guizouarn, Thierry</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Peña%2C+Octavio%22">Peña, Octavio</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Oumezzine%2C+Mohamed%22">Oumezzine, Mohamed</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Physica+B%22">Physica B</searchLink>. Nov2011, Vol. 406 Issue 21, p4060-4067. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Hopping+conduction%22">Hopping conduction</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum+compounds%22">Lanthanum compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Yttrium%22">Yttrium</searchLink><br /><searchLink fieldCode="DE" term="%22Iron%22">Iron</searchLink><br /><searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Polarons%22">Polarons</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductors%22">Semiconductors</searchLink>
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  Data: Abstract: The electrical properties and the mechanism of conduction of the simultaneously substituted La0.7−x Y x Ba0.3Mn1−x Fe x O3 perovskite (0≤x≤0.30) have been studied. The insertion of Y3+ and Fe3+ ions in the parent compound La0.7Ba0.3MnO3 leads to an increase of the resistivity. The undoped sample (x=0) shows a metallic behavior, which can be fitted by the relation ρ(T)=ρ 0+ρ 2T2+ρ 4.5T4.5, indicating the importance of electron–magnon scattering effects in this material. All the other samples (x≥0.10) are semiconductors throughout the studied temperature range (80–290K). Several models have been used to fit their temperature-dependent resistivity: thermal activation, adiabatic nearest-neighbor hopping of small polarons (Holstein theory) and variable range hopping (VRH) models. The fits show that the electronic transport in semiconducting La0.7−x Y x Ba0.3Mn1−x Fe x O3 is well described and dominated by the VRH mechanism, for which the hopping distance (a) grows with increasing Fe3+ doping, thus increasing the average hopping energy W. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Physica B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.physb.2011.07.048
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 4060
    Subjects:
      – SubjectFull: Hopping conduction
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
      – SubjectFull: Lanthanum compounds
        Type: general
      – SubjectFull: Yttrium
        Type: general
      – SubjectFull: Iron
        Type: general
      – SubjectFull: Perovskite
        Type: general
      – SubjectFull: Polarons
        Type: general
      – SubjectFull: Semiconductors
        Type: general
    Titles:
      – TitleFull: Transport behavior and mechanism of conduction of simultaneously substituted Y and Fe in La0.7Ba0.3MnO3 perovskite
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            NameFull: Abdelkhalek, Sonia Ben
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            NameFull: Kallel, Nabil
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            NameFull: Kallel, Sami
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            NameFull: Guizouarn, Thierry
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            NameFull: Peña, Octavio
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            – D: 01
              M: 11
              Text: Nov2011
              Type: published
              Y: 2011
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              Value: 09214526
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              Value: 406
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              Value: 21
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