Study of combined effect of partial Bi doping and particle size reduction on magnetism of La0.7Sr0.3MnO3

Dsouza, Anita and Babu, P D and Rayaprol, Sudhindra and Murari, M S and Daivajna, Mamatha D (2019) Study of combined effect of partial Bi doping and particle size reduction on magnetism of La0.7Sr0.3MnO3. Journal of magnetism and Magnetic materials, 497. ISSN 0304-8853

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Abstract

La0.7Sr0.3MnO3 has been subjected to simultaneous partial bismuth substitution and particle size reduction to understand the mechanism controlling the magnetic properties. Nanosized samples of 10% Bi doped La0.7Sr0.3MnO3 samples were prepared by high energy planetary ball milling. Compared to pristine La0.7Sr0.3MnO3, 10% Bi doping results in the reduction of saturated magnetic moment and Curie temperature. Using the ‘top-down approach’ through high energy planetary ball milling, particle size reduces from 250nm for bulk to 26nm for 48h ball milled sample. Correspondingly, the magnetic properties show the direct influence of size reduction, as the observed magnetic moment shows drastic decrease as particle size reduces. It is interesting to note that 10% Bi doping in La0.7Sr0.3MnO3 plays important role in controlling the size with respect to milling time. In the present work, we discuss the magnetic properties of nanostructured La0.6Bi0.1Sr0.3MnO3 samples. The observed magnetization behaviour can be described using the core-shell model for nanoparticles

Item Type: Article
Uncontrolled Keywords: Magnetic materials Ball milling X-ray diffraction Magnetic properties
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 17 Mar 2020 08:48
Last Modified: 17 Mar 2020 08:48
URI: http://eprints.manipal.edu/id/eprint/154998

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