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A comparative study on pyrochlore phase formation in La2Zr2O7 in microscopic and macroscopic scale

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Abstract

Atomic scale study has been carried out to probe the pyrochlore phase formation in local scale and compare it with the long range ordering. Lanthanum zirconate (La2Zr2O7) pyrochlore was synthesized by wet chemistry and characterized by X-ray diffraction to study the long range ordering. Time Differential Perturbed γ-γ Angular Correlation (TDPAC) Spectroscopy was performed to identify the pyrochlore phase formation in local scale. Electron paramagnetic resonance and Photo-luminescence spectroscopic studies were used to identify the defects in local scale. Role of annealing and defects in nucleation of pyrochlore phase has been explored in the present study. An early identification of pyrochlore phase was successfully done by TDPAC spectroscopy.

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Acknowledgements

The present work was supported by UGC-DAE CSR project no. CRS/2021-22/02/535. Dr. S. V. Thakare, RPhD, BARC is thankfully acknowledged for his help in arranging the PAC probe. Mr. Ashim Kumar Biswas of RCD (BARC), VECC, Kolkata is acknowledged for his help during sample preparation. Dr. R. Tripathi, Head, NCS, RCD, BARC and Dr. P. K. Mohapatra, Associate Director, RC&I Group, BARC are sincerely acknowledged for their continuous support and encouragement in carrying out the work.

Funding

The Funding was provided by UGC-DAE Consortium for Scientific Research, University Grants Commission, (CRS/2021-22/02/535), Kakoli Banerjee

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Authors and Affiliations

  1. Radiochemistry Laboratory, RCD (BARC), Variable Energy Cyclotron Centre, Kolkata, 700064, India

    D. Banerjee

  2. Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India

    D. Banerjee, Reshmi Thekke Parayil, Santosh K. Gupta & M. Mohapatra

  3. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

    Reshmi Thekke Parayil, Santosh K. Gupta & M. Mohapatra

  4. Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

    Brindaban Modak

  5. Prabhu Jagatbandhu College, Andul-Mouri, Kolkata, India

    Kakoli Banerjee

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  1. D. Banerjee
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  2. Reshmi Thekke Parayil
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  3. Santosh K. Gupta
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Banerjee, D., Parayil, R.T., Gupta, S.K. et al. A comparative study on pyrochlore phase formation in La2Zr2O7 in microscopic and macroscopic scale. J Radioanal Nucl Chem 333, 1603–1609 (2024). https://doi.org/10.1007/s10967-023-09221-8

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  • DOI: https://doi.org/10.1007/s10967-023-09221-8

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