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Temperature-Dependent Magnetic and EPR Studies of Bulk and Nanoparticles of Bi0.1Ca0.9MnO3

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Abstract

We report temperature-dependent magnetic and electron paramagnetic resonance (EPR) properties of bulk and nanoparticle samples of Bi0.1Ca0.9MnO3 (BCMO). The nanoparticles of BCMO (dia ~50 nm) were prepared by the standard sol–gel technique and bulk samples by solid-state reaction method. We have investigated the magnetic ordering in the two samples by carrying out temperature-dependent magnetic and EPR studies and compared their properties. According to earlier reports, antiferromagnetic and ferromagnetic orders coexist in the bulk sample of Bi0.1Ca0.9MnO3. Our magnetization and EPR results show the existence of ferromagnetism in the bulk sample which is present in the nanosample as well but with somewhat weakened strength with the size reduction.

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Acknowledgments

Funding from DST and UGC, Government of India and the Indian National Science Academy is gratefully acknowledged. We thank Prof. Arun Grover and Dr. Swati Pandya of TIFR Mumbai for help with the SQUID magnetization measurements.

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  1. Department of Physics, Indian Institute of Science, Bangalore, 560012, India

    Geetanjali Singh & S. V. Bhat

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  1. Geetanjali Singh
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  2. S. V. Bhat
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Correspondence to Geetanjali Singh.

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Singh, G., Bhat, S.V. Temperature-Dependent Magnetic and EPR Studies of Bulk and Nanoparticles of Bi0.1Ca0.9MnO3 . Appl Magn Reson 46, 921–929 (2015). https://doi.org/10.1007/s00723-015-0687-y

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  • DOI: https://doi.org/10.1007/s00723-015-0687-y

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