Size control on the magnetism of La0.7Sr0.3MnO3

Anita D Souza, P. D. Babu, Sudhindra Rayaprol, M. S. Murari, Lozil Denzil Mendonca, Mamatha Daivajna

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Polycrystalline La0.7Sr0.3MnO3 samples was subjected to high-energy planetary ball milling in order to reduce the average particle size and to study the influence of the reduced particle size on the magnetism. With increasing milling time (0–48 h), the average particle size reduces from bulk to about 20 nm. Magnetization measurements show that there is marginal change in the ferromagnetic ordering temperature; however, there is drastic reduction observed in the magnetic moment. This observation is corroborated from the neutron diffraction experiments too. The reduction in particle size also affects the magnetic anisotropy of the system and is found to decrease with decreasing particle size. Further, as the particle size is reduced, evolution of Griffith phase has been observed in the system.

Original languageEnglish
Pages (from-to)874-882
Number of pages9
JournalJournal of Alloys and Compounds
Volume797
DOIs
Publication statusPublished - 15-08-2019

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Magnetism
Particle size
Magnetic anisotropy
Ball milling
Neutron diffraction
Magnetic moments
Magnetization
Experiments

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

D Souza, A., Babu, P. D., Rayaprol, S., Murari, M. S., Mendonca, L. D., & Daivajna, M. (2019). Size control on the magnetism of La0.7Sr0.3MnO3. Journal of Alloys and Compounds, 797, 874-882. https://doi.org/10.1016/j.jallcom.2019.05.004
D Souza, Anita ; Babu, P. D. ; Rayaprol, Sudhindra ; Murari, M. S. ; Mendonca, Lozil Denzil ; Daivajna, Mamatha. / Size control on the magnetism of La0.7Sr0.3MnO3. In: Journal of Alloys and Compounds. 2019 ; Vol. 797. pp. 874-882.
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D Souza, A, Babu, PD, Rayaprol, S, Murari, MS, Mendonca, LD & Daivajna, M 2019, 'Size control on the magnetism of La0.7Sr0.3MnO3', Journal of Alloys and Compounds, vol. 797, pp. 874-882. https://doi.org/10.1016/j.jallcom.2019.05.004

Size control on the magnetism of La0.7Sr0.3MnO3. / D Souza, Anita; Babu, P. D.; Rayaprol, Sudhindra; Murari, M. S.; Mendonca, Lozil Denzil; Daivajna, Mamatha.

In: Journal of Alloys and Compounds, Vol. 797, 15.08.2019, p. 874-882.

Research output: Contribution to journalArticle

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AU - Mendonca, Lozil Denzil

AU - Daivajna, Mamatha

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AB - Polycrystalline La0.7Sr0.3MnO3 samples was subjected to high-energy planetary ball milling in order to reduce the average particle size and to study the influence of the reduced particle size on the magnetism. With increasing milling time (0–48 h), the average particle size reduces from bulk to about 20 nm. Magnetization measurements show that there is marginal change in the ferromagnetic ordering temperature; however, there is drastic reduction observed in the magnetic moment. This observation is corroborated from the neutron diffraction experiments too. The reduction in particle size also affects the magnetic anisotropy of the system and is found to decrease with decreasing particle size. Further, as the particle size is reduced, evolution of Griffith phase has been observed in the system.

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