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Dilute magnetic semiconductor of ZnCoSe thin films: Structural, optical, and magnetic characteristics

Shaaban, Essam R. and Mahasen, Mohamed M. and Soraya, Mohmoud M. and Yousef, El Sayed and Mahmoud, Safwat A. and Ali, Gomaa A. M. and Elshaikh, Haroun A. (2018) Dilute magnetic semiconductor of ZnCoSe thin films: Structural, optical, and magnetic characteristics. Journal of the American Ceramic Society. pp. 1-15. ISSN 1551-2916 (In Press)

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Abstract

A series of Zn1−xCoxSe (x = 0, 0.025, 0.050, 0.075, and 0.100) films using were evaporated (thickness of 1 μm) using electron beam gun. The effect of Co doping on the structural, optical, and magnetic properties has been investigated. X‐ray diffraction studies confirm formation of zinc blend structure for all Zn1−xCoxSe films. The crystallite size increases and the lattice strain decreases with the increase in Co content. The elemental constituents were characterized by energy dispersive X‐ray. Optical studies showed an increase in refractive index and a decrease in energy gap with the increase in the cobalt doping. The dispersion of the refractive index has been analyzed in terms of the Wemple‐DiDomenico single oscillator model. The oscillator parameters including the single oscillator energy (Eo), the dispersion energy (Ed), and the static refractive index (n0) were estimated. Magnetization measurements via vibrating sample magnetometer showed a hysteresis loop and confirmed room‐temperature ferromagnetism in Co‐doped ZnSe films.

Item Type: Article
Additional Information: ISI Journal Citation Reports © Ranking: 2017:3/27 (Materials Science, Ceramics)
Uncontrolled Keywords: magnetization, optical constants, oscillator parameters, zinc blend structure, Zn1−xCoxSe thin films
Subjects: Q Science > QD Chemistry
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Noorul Farina Arifin
Date Deposited: 16 Jan 2019 03:54
Last Modified: 16 Jan 2019 03:54
URI: http://umpir.ump.edu.my/id/eprint/23800
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