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Critical behavior and magnetic entropy change in the La0.6Sr0.4Mn0.8Fe0.1Cr0.1O3 perovskite

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Title: Critical behavior and magnetic entropy change in the La0.6Sr0.4Mn0.8Fe0.1Cr0.1O3 perovskite
Authors: Ben Abdelkhalek, Sonia1 abdk_sonia@yahoo.fr, Kallel, Nabil1, Kallel, Sami1, Peña, Octavio2, Oumezzine, Mohamed1
Source: Journal of Magnetism & Magnetic Materials. Nov2012, Vol. 324 Issue 22, p3615-3619. 5p.
Subjects: Lanthanum compounds, Perovskite, Ceramic materials, Magnetization, Phase transitions, Magnetic fields
Abstract: Abstract: Critical behavior in the La0.6Sr0.4Mn0.8Fe0.1Cr0.1O3 ceramics was studied using magnetization methods. Results show that the paramagnetic–ferromagnetic transition is of second order. Based on the critical behavior analysis using the Banerjee criterion and the Kouvel–Fisher method, we find the critical exponents: β=0.395±0.010, γ=1.402±0.010, and δ=5.208±0.007, for which the magnetic interaction is satisfied within the three-dimensional Heisenberg model. Results indicate the presence of short-range interactions. The magnetic entropy change (−ΔS M) reached maximum values of 1.75, 1.45, 1.15, 0.8 and 0.43JKg−1 K−1 under a magnetic field variation of 5, 4, 3, 2 and 1T, respectively. Nevertheless, these (−ΔS M) values are much low for any potential application at this moment. The nature of this phenomenon is discussed in relation to the characteristics of the magnetic phase transition and critical exponents. [Copyright &y& Elsevier]
Copyright of Journal of Magnetism & Magnetic Materials 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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DbLabel: Engineering Source
An: 78282055
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Critical behavior and magnetic entropy change in the La<subscript>0.6</subscript>Sr<subscript>0.4</subscript>Mn<subscript>0.8</subscript>Fe<subscript>0.1</subscript>Cr<subscript>0.1</subscript>O<subscript>3</subscript> perovskite
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  Data: <searchLink fieldCode="AR" term="%22Ben+Abdelkhalek%2C+Sonia%22">Ben Abdelkhalek, Sonia</searchLink><relatesTo>1</relatesTo><i> abdk_sonia@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Kallel%2C+Nabil%22">Kallel, Nabil</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kallel%2C+Sami%22">Kallel, Sami</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Peña%2C+Octavio%22">Peña, Octavio</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Oumezzine%2C+Mohamed%22">Oumezzine, Mohamed</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="DE" term="%22Lanthanum+compounds%22">Lanthanum compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramic+materials%22">Ceramic materials</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetization%22">Magnetization</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Critical behavior in the La0.6Sr0.4Mn0.8Fe0.1Cr0.1O3 ceramics was studied using magnetization methods. Results show that the paramagnetic–ferromagnetic transition is of second order. Based on the critical behavior analysis using the Banerjee criterion and the Kouvel–Fisher method, we find the critical exponents: β=0.395±0.010, γ=1.402±0.010, and δ=5.208±0.007, for which the magnetic interaction is satisfied within the three-dimensional Heisenberg model. Results indicate the presence of short-range interactions. The magnetic entropy change (−ΔS M) reached maximum values of 1.75, 1.45, 1.15, 0.8 and 0.43JKg−1 K−1 under a magnetic field variation of 5, 4, 3, 2 and 1T, respectively. Nevertheless, these (−ΔS M) values are much low for any potential application at this moment. The nature of this phenomenon is discussed in relation to the characteristics of the magnetic phase transition and critical exponents. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
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  Group: Ab
  Data: <i>Copyright of Journal of Magnetism & Magnetic Materials 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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      – Type: doi
        Value: 10.1016/j.jmmm.2012.06.024
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 3615
    Subjects:
      – SubjectFull: Lanthanum compounds
        Type: general
      – SubjectFull: Perovskite
        Type: general
      – SubjectFull: Ceramic materials
        Type: general
      – SubjectFull: Magnetization
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Magnetic fields
        Type: general
    Titles:
      – TitleFull: Critical behavior and magnetic entropy change in the La0.6Sr0.4Mn0.8Fe0.1Cr0.1O3 perovskite
        Type: main
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          Name:
            NameFull: Ben Abdelkhalek, Sonia
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            NameFull: Kallel, Nabil
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            NameFull: Kallel, Sami
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            NameFull: Peña, Octavio
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            NameFull: Oumezzine, Mohamed
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            – D: 01
              M: 11
              Text: Nov2012
              Type: published
              Y: 2012
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