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Modeling the magnetic properties and magnetocaloric effect of La0.7Sr0.3Mn0.9Ti0.1O3.

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Title: Modeling the magnetic properties and magnetocaloric effect of La0.7Sr0.3Mn0.9Ti0.1O3.
Authors: Yahyaoui, S.1, Khalfaoui, M.1, Kallel, S.2, Kallel, N.2,3, Amaral, J.S.4,5, Ben Lamine, A.1 aben_lamin@yahoo.fr
Source: Journal of Alloys & Compounds. Nov2016, Vol. 685, p633-638. 6p.
Subjects: Magnetic properties of perovskite, Magnetocaloric effects, Lanthanum compounds, Brillouin scattering, Mean field theory, Angular momentum (Mechanics), Equations of state
Abstract: We present a simple analysis based on the molecular field theory and on the Bean-Rodbell model to justify the magnetocaloric effect (MCE) on La 0.7 Sr 0.3 Mn 0.9 Ti 0.1 O 3 . The modeling the magnetic properties of the La 0.7 Sr 0.3 Mn 0.9 Ti 0.1 O 3 was investigated. Using the Brillouin function we have determined the mean field exchange parameter λ and the total angular momentum J of the perovskite. The mean-field equation of state leads the system to second order ferromagnetic (FM)-paramagnetic (PM) phase transition. The expressions describing entropy and its change under the influence of magnetic field have been derived. A large magnetic entropy (−ΔS M ) has been observed in our sample with a peak centered on the Curie temperature (T C = 210 K). The theoretical calculations are compared with experimental behavior. [ABSTRACT FROM AUTHOR]
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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DbLabel: Engineering Source
An: 117437258
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Modeling the magnetic properties and magnetocaloric effect of La0.7Sr0.3Mn0.9Ti0.1O3.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Nov2016, Vol. 685, p633-638. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+properties+of+perovskite%22">Magnetic properties of perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetocaloric+effects%22">Magnetocaloric effects</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum+compounds%22">Lanthanum compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Brillouin+scattering%22">Brillouin scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Mean+field+theory%22">Mean field theory</searchLink><br /><searchLink fieldCode="DE" term="%22Angular+momentum+%28Mechanics%29%22">Angular momentum (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Equations+of+state%22">Equations of state</searchLink>
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  Data: We present a simple analysis based on the molecular field theory and on the Bean-Rodbell model to justify the magnetocaloric effect (MCE) on La 0.7 Sr 0.3 Mn 0.9 Ti 0.1 O 3 . The modeling the magnetic properties of the La 0.7 Sr 0.3 Mn 0.9 Ti 0.1 O 3 was investigated. Using the Brillouin function we have determined the mean field exchange parameter λ and the total angular momentum J of the perovskite. The mean-field equation of state leads the system to second order ferromagnetic (FM)-paramagnetic (PM) phase transition. The expressions describing entropy and its change under the influence of magnetic field have been derived. A large magnetic entropy (−ΔS M ) has been observed in our sample with a peak centered on the Curie temperature (T C = 210 K). The theoretical calculations are compared with experimental behavior. [ABSTRACT FROM AUTHOR]
– 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:
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      – Type: doi
        Value: 10.1016/j.jallcom.2016.05.318
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 633
    Subjects:
      – SubjectFull: Magnetic properties of perovskite
        Type: general
      – SubjectFull: Magnetocaloric effects
        Type: general
      – SubjectFull: Lanthanum compounds
        Type: general
      – SubjectFull: Brillouin scattering
        Type: general
      – SubjectFull: Mean field theory
        Type: general
      – SubjectFull: Angular momentum (Mechanics)
        Type: general
      – SubjectFull: Equations of state
        Type: general
    Titles:
      – TitleFull: Modeling the magnetic properties and magnetocaloric effect of La0.7Sr0.3Mn0.9Ti0.1O3.
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            NameFull: Kallel, S.
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              Text: Nov2016
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              Y: 2016
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              Value: 685
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