Magnetocaloric Properties of Nanostructured La0.7-xBixSr0.3MnO3 (x = 0.0, 0.1) Manganites Using Phenomenological Model

Anita D. Souza, Mamatha Daivajna

Research output: Contribution to journalArticle

Abstract

Magnetocaloric properties of nanostructured pristine and Bi-doped La0.7Sr0.3MnO3 samples, synthesised by high-energy planetary ball milling, are presented here. The aim of the study is to understand the effect of milling time on magnetic entropy change, relative cooling power and change in specific heat. The magnetocaloric property, defined as the change in the magnetic entropy, has been determined by using a phenomenological model applied to the magnetic susceptibility plots. Replacing 10% La by Bi in La0.7Sr0.3MnO3 significantly alters the change in magnetic entropy. Correlation between the particle size and magnetic entropy is observed in the present study. As the milling time increases from 0 h (bulk) to 48 h, the particle size reduces causing significant modifications in the magnetocaloric properties.

Original languageEnglish
JournalJournal of Superconductivity and Novel Magnetism
DOIs
Publication statusAccepted/In press - 01-01-2020

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Manganites
Entropy
entropy
Particle size
Ball milling
Magnetic susceptibility
Specific heat
balls
plots
specific heat
Cooling
magnetic permeability
cooling
energy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Magnetocaloric Properties of Nanostructured La0.7-xBixSr0.3MnO3 (x = 0.0, 0.1) Manganites Using Phenomenological Model",
abstract = "Magnetocaloric properties of nanostructured pristine and Bi-doped La0.7Sr0.3MnO3 samples, synthesised by high-energy planetary ball milling, are presented here. The aim of the study is to understand the effect of milling time on magnetic entropy change, relative cooling power and change in specific heat. The magnetocaloric property, defined as the change in the magnetic entropy, has been determined by using a phenomenological model applied to the magnetic susceptibility plots. Replacing 10{\%} La by Bi in La0.7Sr0.3MnO3 significantly alters the change in magnetic entropy. Correlation between the particle size and magnetic entropy is observed in the present study. As the milling time increases from 0 h (bulk) to 48 h, the particle size reduces causing significant modifications in the magnetocaloric properties.",
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N2 - Magnetocaloric properties of nanostructured pristine and Bi-doped La0.7Sr0.3MnO3 samples, synthesised by high-energy planetary ball milling, are presented here. The aim of the study is to understand the effect of milling time on magnetic entropy change, relative cooling power and change in specific heat. The magnetocaloric property, defined as the change in the magnetic entropy, has been determined by using a phenomenological model applied to the magnetic susceptibility plots. Replacing 10% La by Bi in La0.7Sr0.3MnO3 significantly alters the change in magnetic entropy. Correlation between the particle size and magnetic entropy is observed in the present study. As the milling time increases from 0 h (bulk) to 48 h, the particle size reduces causing significant modifications in the magnetocaloric properties.

AB - Magnetocaloric properties of nanostructured pristine and Bi-doped La0.7Sr0.3MnO3 samples, synthesised by high-energy planetary ball milling, are presented here. The aim of the study is to understand the effect of milling time on magnetic entropy change, relative cooling power and change in specific heat. The magnetocaloric property, defined as the change in the magnetic entropy, has been determined by using a phenomenological model applied to the magnetic susceptibility plots. Replacing 10% La by Bi in La0.7Sr0.3MnO3 significantly alters the change in magnetic entropy. Correlation between the particle size and magnetic entropy is observed in the present study. As the milling time increases from 0 h (bulk) to 48 h, the particle size reduces causing significant modifications in the magnetocaloric properties.

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