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Structural and Magnetic Properties of Co diffused CdTe Nanocrystalline Thin Films Deposited by Electron Beam Evaporation

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Abstract

Co diffused cadmium telluride (CdTe) nanocrystalline thin films with different Co content were prepared by depositing CdTe/Co stacked layers on glass substrates at 373 K using electron beam evaporation technique. The effect of Co content on structural, morphological, chemical, Raman, and magnetic studies were carried out. X-ray diffraction (XRD) patterns confirmed that all Co diffused CdTe films are in zinc blende structure. The lattice parameter increased with increase of Co content. The high-resolution scanning electron microscopy (HRSEM) images illustrated the grain size of the films. EDAX data confirmed the presence of Co, Cd, and Te with nearly stoichiometic. Raman spectra revealed peaks corresponding to A1, TO, and LO modes of CdTe and gradual shift in peak position. The increase in intensity confirmed the incorporation of Co into CdTe host lattice. Magnetic measurements showed a clear well-defined room temperature ferromagnetic hysteresis loop.

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Acknowledgments

The authors are grateful to the Defense Research and Development Organization (DRDO), New Delhi, India for providing financial support to carry out the present research work. The authors also express their thanks to SAIF IIT Madras for providing the VSM studies and VIT -DST FIST for the XRD facility.

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Authors and Affiliations

  1. Thin Films Laboratory, Materials Physics Division, School of Advanced Sciences, VIT University, Vellore, Tamil Nadu, 632014, India

    Rigana Begam Mohamed, Madhusudhana Rao Nasina, Kaleemulla Shaik, Sai Krishna Narayananellore & Kuppan M

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  1. Rigana Begam Mohamed
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  2. Madhusudhana Rao Nasina
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  3. Kaleemulla Shaik
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  4. Sai Krishna Narayananellore
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Correspondence to Madhusudhana Rao Nasina.

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Mohamed, R.B., Nasina, M.R., Shaik, K. et al. Structural and Magnetic Properties of Co diffused CdTe Nanocrystalline Thin Films Deposited by Electron Beam Evaporation. J Supercond Nov Magn 27, 2147–2152 (2014). https://doi.org/10.1007/s10948-014-2570-8

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  • DOI: https://doi.org/10.1007/s10948-014-2570-8

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