TY - JOUR
T1 - Effect of nanoscale size reduction on the magnetic properties of Pr0.6Sr0.4MnO3
AU - Souza, Anita D.
AU - Vagadia, Megha
AU - Daivajna, Mamatha
N1 - Funding Information:
A.D is thankful to DST, India for financial support through the INSPIRE Fellowship (IF 170553). M.V is thankful to DST, India for the INSPIRE Faculty award (DST/INSPIRE/04/2017/003059). The authors are thankful to Dr. S. Rayaprol (UGC-DAE-CSR, Mumbai) for valuable discussions and Mr. M. Venugopal (UGC-DAE-CSR, Mumbai) for help in sample synthesis and XRD measurements and Mr. Manoj Prajapat (IISER-Bhopal) for help in magnetic measurements.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11/15
Y1 - 2021/11/15
N2 - The ferromagnetic Pr0.6Sr0.4MnO3 sample has been subjected to time bound high energy planetary ball milling with an aim to reduce the particle size. When the particle size is analyzed as a function of milling time, it is found that particle size decreases with increasing milling time and then saturates at a certain value. The implications of the decrease in particle size on magnetic properties have been carefully studied by analyzing the magnetization data in detail. With a decrease in particle size, the Curie temperature, TC and the magnitude of magnetization drops. A deviation in inverse magnetic susceptibility from the Curie-Weiss behaviour has been noticed for nanoparticles which suggest the presence of quenched disorder due to particle size reduction. The strength of magnetic interactions switches from long range to short range with a systematic decrease in particle size. The observed properties can be explained considering the core–shell structure of the nanoparticle where the surface defects strongly influence the degree of disorder in the system.
AB - The ferromagnetic Pr0.6Sr0.4MnO3 sample has been subjected to time bound high energy planetary ball milling with an aim to reduce the particle size. When the particle size is analyzed as a function of milling time, it is found that particle size decreases with increasing milling time and then saturates at a certain value. The implications of the decrease in particle size on magnetic properties have been carefully studied by analyzing the magnetization data in detail. With a decrease in particle size, the Curie temperature, TC and the magnitude of magnetization drops. A deviation in inverse magnetic susceptibility from the Curie-Weiss behaviour has been noticed for nanoparticles which suggest the presence of quenched disorder due to particle size reduction. The strength of magnetic interactions switches from long range to short range with a systematic decrease in particle size. The observed properties can be explained considering the core–shell structure of the nanoparticle where the surface defects strongly influence the degree of disorder in the system.
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U2 - 10.1016/j.jmmm.2021.168280
DO - 10.1016/j.jmmm.2021.168280
M3 - Article
AN - SCOPUS:85111850446
SN - 0304-8853
VL - 538
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 168280
ER -