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Structural and Microstructural Modification Due to 100 KeV Ar+1 Ion Irradiation on YBCO/BSO Composite Thin Film

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Abstract

YBa2Cu3O7−δ /1 wt% BSO composite thin films are grown by pulsed laser deposition. The films are irradiated with 100 KeV Ar+1 ions at room temperature. X-ray diffraction and Raman techniques are used for analysis of structural disorder. The reduction in the intensity of the XRD peaks after irradiation gives a clue of modification occurring in the sample. Raman spectra shows the displacement of apical oxygen O(4) at 500 cm−1 and defect induced peaks appear at 555 and 723 cm−1 on irradiation. Field emission scanning electron microscopy (FESEM) analysis shows the agglomeration of BSO particles by damaging the surface of the film with increase in irradiation fluence. Fluctuation conductivity is analyzed within the framework of Aslamazov-Larkin and Lawrence-Doniach theories that fits well for 3D and 2D regimes.

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Acknowledgments

The authors would like to thank IOP, Bhubaneswar group for providing the facility of PLD for sample preparation. They also thank Pelletron group of IUAC, New Delhi for providing ion beam irradiation. The authors gratefully acknowledge the Department of Science and Technology, Government of India for providing fellowship to carry out this work.

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  1. Department of Physics, National Institute of Technology, Rourkela, -769008, India

    M. Sahoo & D. Behera

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  1. M. Sahoo
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Correspondence to M. Sahoo.

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Sahoo, M., Behera, D. Structural and Microstructural Modification Due to 100 KeV Ar+1 Ion Irradiation on YBCO/BSO Composite Thin Film. J Supercond Nov Magn 28, 371–377 (2015). https://doi.org/10.1007/s10948-014-2680-3

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  • DOI: https://doi.org/10.1007/s10948-014-2680-3

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