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Titanium effects on the transport properties in La0.7Sr0.3Mn1− x Ti x O3

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Title: Titanium effects on the transport properties in La0.7Sr0.3Mn1− x Ti x O3
Authors: Rahmouni, H.1 rahmounihedi@yahoo.fr, Jemai, R.1, Kallel, N.2, Selmi, A.3, Khirouni, K.1
Source: Journal of Alloys & Compounds. May2010, Vol. 497 Issue 1/2, p1-5. 5p.
Subjects: Perovskite, Transport properties of metal, Titanium, Temperature effect, Electric conductivity, Spectrum analysis, Force & energy, Activation (Chemistry)
Abstract: Abstract: The transport properties of the samples La0.7Sr0.3Mn1− x Ti x O3 were investigated using admittance spectroscopy. In contrary to free compound, when titanium is introduced, the conductance becomes frequency and temperature dependent. From DC conductance study, electronic conduction is found to be dominated by thermally activated hopping and depending strongly on Ti content. Activation energy is deduced from the variation of conductance with temperature. This energy decreases from 168 to 143meV when x increases from 0.05 to 0.20. The AC conductance spectrum is found to obey Jonscher universal power law. Finally, at ambient temperature, DC conductance decreases with the value of x and proves a clear effect of titanium in transport properties of the material. This decrease of conductance is explained by a reduction of Mn3+–O–Mn4+ network responsible for electrical conduction in perovskite. [Copyright &y& Elsevier]
Copyright of Journal of Alloys & Compounds 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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  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 49850214
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Titanium effects on the transport properties in La<subscript>0.7</subscript>Sr<subscript>0.3</subscript>Mn<subscript>1− x </subscript>Ti<subscript> x </subscript>O<subscript>3</subscript>
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  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Rahmouni%2C+H%2E%22">Rahmouni, H.</searchLink><relatesTo>1</relatesTo><i> rahmounihedi@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Jemai%2C+R%2E%22">Jemai, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kallel%2C+N%2E%22">Kallel, N.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Selmi%2C+A%2E%22">Selmi, A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Khirouni%2C+K%2E%22">Khirouni, K.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. May2010, Vol. 497 Issue 1/2, p1-5. 5p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Transport+properties+of+metal%22">Transport properties of metal</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium%22">Titanium</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Force+%26+energy%22">Force & energy</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+%28Chemistry%29%22">Activation (Chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The transport properties of the samples La0.7Sr0.3Mn1− x Ti x O3 were investigated using admittance spectroscopy. In contrary to free compound, when titanium is introduced, the conductance becomes frequency and temperature dependent. From DC conductance study, electronic conduction is found to be dominated by thermally activated hopping and depending strongly on Ti content. Activation energy is deduced from the variation of conductance with temperature. This energy decreases from 168 to 143meV when x increases from 0.05 to 0.20. The AC conductance spectrum is found to obey Jonscher universal power law. Finally, at ambient temperature, DC conductance decreases with the value of x and proves a clear effect of titanium in transport properties of the material. This decrease of conductance is explained by a reduction of Mn3+–O–Mn4+ network responsible for electrical conduction in perovskite. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jallcom.2010.02.156
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 5
        StartPage: 1
    Subjects:
      – SubjectFull: Perovskite
        Type: general
      – SubjectFull: Transport properties of metal
        Type: general
      – SubjectFull: Titanium
        Type: general
      – SubjectFull: Temperature effect
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
      – SubjectFull: Spectrum analysis
        Type: general
      – SubjectFull: Force & energy
        Type: general
      – SubjectFull: Activation (Chemistry)
        Type: general
    Titles:
      – TitleFull: Titanium effects on the transport properties in La0.7Sr0.3Mn1− x Ti x O3
        Type: main
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            NameFull: Rahmouni, H.
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            NameFull: Jemai, R.
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            NameFull: Kallel, N.
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            NameFull: Selmi, A.
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              Text: May2010
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              Y: 2010
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              Value: 497
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