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Studies on Colossal Magnetoresistance Behaviour of Pr0.6Sr0.4MnO3/Pr0.5Ca0.5MnO3 Heterostructure Films.

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Title: Studies on Colossal Magnetoresistance Behaviour of Pr0.6Sr0.4MnO3/Pr0.5Ca0.5MnO3 Heterostructure Films.
Authors: Gayathri, V.1,2 (AUTHOR), Kumary, T. Geetha1 (AUTHOR), Amaladass, E. P.1,2 (AUTHOR), Sathyanarayana, A. T.1,2 (AUTHOR), Mani, Awadhesh1,2 (AUTHOR) mani@igcar.gov.in
Source: Journal of Superconductivity & Novel Magnetism. Jul2021, Vol. 34 Issue 7, p1955-1960. 6p.
Subject Terms: *Magnetoresistance, *Metal-insulator transitions, *Pulsed laser deposition, *Transition temperature, *Curie temperature, *Transition metals
Abstract: Heterostructure bilayer thin films of Pr0.6Sr0.4MnO3/Pr0.5Ca0.5MnO3 were prepared by pulsed laser deposition, and the structural, magnetic and magnetotransport properties were studied, and the results were compared to that of Pr0.6Sr0.4MnO3 and Pr0.5Ca0.5MnO3 single-layer thin films. Structural analysis of the heterostructure reveals c-axis orientation for both the manganite layers. The heterostructure exhibits a higher metal-insulator transition temperature and a larger colossal magnetoresistance near room temperature than that of the single-layer counterparts. The electrical conduction above the metal-insulator transition could be explained within the realm of the adiabatic small polaron hopping mechanism, with lesser activation energies compared to the single-layer films. Magnetization measurements portray the presence of an unsaturated symmetric hysteresis loop for the heterostructure with the Curie temperature of ~270 K corresponding to the ferromagnetic ordering emanating from Pr0.6Sr0.4MnO3. These results could be qualitatively understood considering the combined effect of strain and ferromagnetic proximity of Pr0.6Sr0.4MnO3 with charge-ordered Pr0.5Ca0.5MnO3 manganite. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 152043228
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  Label: Title
  Group: Ti
  Data: Studies on Colossal Magnetoresistance Behaviour of Pr<subscript>0.6</subscript>Sr<subscript>0.4</subscript>MnO<subscript>3</subscript>/Pr<subscript>0.5</subscript>Ca<subscript>0.5</subscript>MnO<subscript>3</subscript> Heterostructure Films.
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  Data: <searchLink fieldCode="AR" term="%22Gayathri%2C+V%2E%22">Gayathri, V.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kumary%2C+T%2E+Geetha%22">Kumary, T. Geetha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Amaladass%2C+E%2E+P%2E%22">Amaladass, E. P.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sathyanarayana%2C+A%2E+T%2E%22">Sathyanarayana, A. T.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mani%2C+Awadhesh%22">Mani, Awadhesh</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> mani@igcar.gov.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Superconductivity+%26+Novel+Magnetism%22">Journal of Superconductivity & Novel Magnetism</searchLink>. Jul2021, Vol. 34 Issue 7, p1955-1960. 6p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Magnetoresistance%22">Magnetoresistance</searchLink><br />*<searchLink fieldCode="DE" term="%22Metal-insulator+transitions%22">Metal-insulator transitions</searchLink><br />*<searchLink fieldCode="DE" term="%22Pulsed+laser+deposition%22">Pulsed laser deposition</searchLink><br />*<searchLink fieldCode="DE" term="%22Transition+temperature%22">Transition temperature</searchLink><br />*<searchLink fieldCode="DE" term="%22Curie+temperature%22">Curie temperature</searchLink><br />*<searchLink fieldCode="DE" term="%22Transition+metals%22">Transition metals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Heterostructure bilayer thin films of Pr0.6Sr0.4MnO3/Pr0.5Ca0.5MnO3 were prepared by pulsed laser deposition, and the structural, magnetic and magnetotransport properties were studied, and the results were compared to that of Pr0.6Sr0.4MnO3 and Pr0.5Ca0.5MnO3 single-layer thin films. Structural analysis of the heterostructure reveals c-axis orientation for both the manganite layers. The heterostructure exhibits a higher metal-insulator transition temperature and a larger colossal magnetoresistance near room temperature than that of the single-layer counterparts. The electrical conduction above the metal-insulator transition could be explained within the realm of the adiabatic small polaron hopping mechanism, with lesser activation energies compared to the single-layer films. Magnetization measurements portray the presence of an unsaturated symmetric hysteresis loop for the heterostructure with the Curie temperature of ~270 K corresponding to the ferromagnetic ordering emanating from Pr0.6Sr0.4MnO3. These results could be qualitatively understood considering the combined effect of strain and ferromagnetic proximity of Pr0.6Sr0.4MnO3 with charge-ordered Pr0.5Ca0.5MnO3 manganite. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10948-021-05889-9
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 1955
    Subjects:
      – SubjectFull: Magnetoresistance
        Type: general
      – SubjectFull: Metal-insulator transitions
        Type: general
      – SubjectFull: Pulsed laser deposition
        Type: general
      – SubjectFull: Transition temperature
        Type: general
      – SubjectFull: Curie temperature
        Type: general
      – SubjectFull: Transition metals
        Type: general
    Titles:
      – TitleFull: Studies on Colossal Magnetoresistance Behaviour of Pr0.6Sr0.4MnO3/Pr0.5Ca0.5MnO3 Heterostructure Films.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Gayathri, V.
      – PersonEntity:
          Name:
            NameFull: Kumary, T. Geetha
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            NameFull: Amaladass, E. P.
      – PersonEntity:
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            NameFull: Sathyanarayana, A. T.
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            NameFull: Mani, Awadhesh
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          Dates:
            – D: 01
              M: 07
              Text: Jul2021
              Type: published
              Y: 2021
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              Value: 15571939
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              Value: 34
            – Type: issue
              Value: 7
          Titles:
            – TitleFull: Journal of Superconductivity & Novel Magnetism
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