Synthesis and properties of Zn(Cu–Mn)O dilute magnetic semiconductor thin films by chemical spray pyrolysis technique

Thankalekshmi, Ratheesh R.; Rastogi, A. C.

doi:10.1016/j.jaap.2014.02.020

Cited by 8 publications

(1 citation statement)

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“…Metal-oxide semiconductors such as ZnO, CdO, MnO, SnO 2 plays major role in various technological research fields especially in solar cell, gas sensors and spintronics. Dilute magnetic semiconductors (DMS) are of great interest for its ferromagnetic property to be used in spintronic devices [1,2]. Ferromagnetic Curie temperatures of the III-V DMS materials are very low compared to other semiconductors, for practical applications [3].…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of cobalt doped ZnO thin films deposited by cost effective nebulizer spray pyrolysis technique

Abirami¹,

Arulanantham²,

Wilson³

2020

Mater. Res. Express

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In this work, we report the structural, optical and magnetic properties of Co doped ZnO thin films fabricated by nebulizer spray pyrolysis technique. Five different thin films were fabricated with various doping concentration of cobalt. These thin films posses hexagonal wurtzite structure with polycrystalline nature and strongly oriented along with (002) and (101) direction. From x-ray diffraction pattern, average crystallite sizes were calculated and are found to be decreases with Co doping concentration. The dislocation density and microstrain values of the coated films increased gradually with doping concentration. The SEM/AFM studies reveal the change from spherical shape to petal shaped grains and it is also found that the size of grains and roughness decreases with Co increasing doping concentration. The lowering of the optical band gap energy from ∼ 3.24 eV to 3.05 eV shows doping by Co in ZnO gives rise to band gap bowing in ZnO:Co thin films. The M-H curve confirms the god ferromagnetism in Co doped ZnO thin films.

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Section: Introductionmentioning

confidence: 99%