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Synthesis and characterization of Co and Mn doped NiO nanoparticles

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Abstract

Diluted magnetic semiconductors (DMS) are intensively studied for their potential spintronics applications, especially those with Curie temperature above the room temperature. Ni1−x Mn x O and Ni1−x Co x O (x=1% & 2%), nanoparticles with size around 40–50 nm, were prepared by co-precipitation method. An NiO single phase structure was confirmed by powder X-ray diffraction measurements. Also, diffraction peaks show a systematic shift towards higher angle with an increase in Mn concentration, which is associated with the lattice variation. The samples were pelleted and examined for its magnetic property using a vibrating sample magnetometer (VSM); it indicates paramagnetic-like behavior at room temperature. The increase in a.c conductivity with increasing temperature is attributed to the increase in drift mobility of the charge carriers.

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Authors and Affiliations

  1. Department of Physics, Mahendra Engineering College, Tiruchengode, 637503, India

    Kaliyan Vallalperuman, Mathivanan Parthibavarman, Sekar Sathishkumar & Manickam Durairaj

  2. Department of Physics, AVS Technical Campus, Salem, 636106, India

    Kuppusamy Thavamani

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  1. Kaliyan Vallalperuman
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  2. Mathivanan Parthibavarman
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  3. Sekar Sathishkumar
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  4. Manickam Durairaj
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Correspondence to Kaliyan Vallalperuman.

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Vallalperuman, K., Parthibavarman, M., Sathishkumar, S. et al. Synthesis and characterization of Co and Mn doped NiO nanoparticles. Korean J. Chem. Eng. 31, 639–643 (2014). https://doi.org/10.1007/s11814-013-0286-2

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  • DOI: https://doi.org/10.1007/s11814-013-0286-2

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