A Systematic Study of Polytypism in Melt & Solution Grown Crystals of Cadmium Iodide doped with Anionic & Cationic Impurities
- Deshbandhu College, University of Delhi, New Delhi,India. AND i-4 Center, Deshbandhu College, University of Delhi, New Delhi, India.
Received: 2024-10-05
Revised: 2024-12-03
Accepted: 2024-12-24
Published 2025-02-10
Copyright (c) 2025 Udai Prakash Tyagi, Aditya Saxena, Monika Sharma (Author)

This work is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract
Investigations carried out on various polytypic compounds till now have shown that the presence of impurities during the growth affects the formation of polytypes. However, this work has remained broadly qualitative. To assess the role of impurities on polytype growth in a definite manner, it was decided to systematically dope with the purified crystal of richly polytypic compound, viz., CdI2 with cationic and anionic impurities. Such a study was conducted on both the crystals grown from melt and solution. The crystals have been characterized by X-ray diffraction and physical method such as color variation, elasticity, shape appearance and optical measurements. The results have been discussed.
Keywords
- Polytypism,
- Doped Crystals,
- Zone-refining,
- X-ray diffraction,
- Streaking,
- Arcing
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