Pandey, B. K. and Shahi, A. K. and Shah, J. and Kotnala, R. K. and Gopal, R. (2020) Giant ferromagnetism in Li doped ZnO nanoparticles at room temperature. Journal of Alloys and Compounds, 823. pp. 153710-153714. ISSN 0925-8388

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Abstract

Wide band gap diluted magnetic semiconductor nanomaterials with improved magnetic and semiconducting properties have achieved great importance in spintronic technology since last decades. Synthesis of a good quality of magnetic semiconductor at room temperature is still a challenge for material scientist. Herein, we report synthesis of Li doped ZnO nanoparticles (NPs) using chemical precipitation method at room temperature with improved magnetic and semiconducting properties. Structure and phase of ZnO NPs have been confirmed by XRD pattern. Optical band gap of ZnO NPs have been tuned in the range of 3.10-3.34 eV using different percentage of Li doping. Maximum optical band gap in ZnO NPs was found 3.34 eV in ZnOLi-1 sample. It has been found that specific Li doping percentage can enhance magnetic property of ZnO NPs at room temperature. The coercivity of ZnO NPs has been tuned in the range of 317-1570 Oe by Li doping. Saturation magnetization and coercivity have been found maximum 0.055 emu/gm and 1570 Oe in ZnOLi-1 NPs respectively. In this work we have observed that ZnOLi-1 NPs show maximum optical band gap and coercivity. Thus we achieved wide band gap diluted magnetic semiconductor with enhance optical and ferromagnetic property at room temperature in terms of Li doped ZnO NPs.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Chemistry Chemistry > Physical Chemistry Multidisciplinary Materials Science Metallurgy & Metallurgical Engineering
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	30 Mar 2022 11:28
Last Modified:	30 Mar 2022 11:28
URI:	http://npl.csircentral.net/id/eprint/4738

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