Tailoring electronics structure, electrical and magnetic properties of synthesized transition metal (Ni)-doped ZnO thin film

Basri, S. H.; Majid, W.H. Abd.; Talik, Noor Azrina; Sarjidan, Mohd Arif Mohd

doi:10.1016/j.jallcom.2018.08.056

Cited by 18 publications

(3 citation statements)

References 54 publications

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“…However, if some researchers reported that the TM-doped ZnO showed room temperature ferromagnetism [3][4][5][6][7][8][9], the others have not observed such magnetic behaviour [10][11][12][13]. In the particular case of the Ni-doped ZnO films, Wakano et al [14] have observed ferromagnetism at 2 K and superparamagnetism at 300 K. Ferromagnetism was observed at room temperature in the Ni-doped ZnO films [15][16][17]. The paramagnetism in the ZnO:Ni films was reported earlier by Yin et al [18].…”

Section: Introductionmentioning

confidence: 99%

Growth of Zn1−xNixO Thin Films and Their Structural, Optical and Magneto-Optical Properties

et al. 2023

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The radio frequency (RF) reactive sputtering technique has been used to prepare Zn1−xNixO thin films with 0 ≤ x ≤ 0.08. Composite targets were obtained by mixing and pressing NiO and ZnO powders. Sapphire, quartz and glass were used as substrates. X-ray diffraction analysis of Ni-doped ZnO films indicates that all samples are crystalised in a hexagonal wurtzite structure with a preferred orientation along the (002) plane. Any secondary phase, corresponding to metallic nickel clusters or nickel oxides was not observed. High-resolution transmission electron microscopy (HR-TEM) image observed for Zn1−xNixO thin film shows a strong preferred orientation (texture) of crystalline columns in the direction perpendicular to the substrate surface. Different surface morphology was revealed in AFM images depending on the film composition and growth condition. Optical absorption spectra suggest the substitution of Zn2+ ions in the ZnO lattice by Ni2+ ions. The energy bandgap value was also found a complex dependence with an increase in Ni dopant concentration. In photoluminescence spectra, two main peaks were revealed, which are ascribed to near band gap emission and vacancy or defect states. Faraday rotation demonstrates its enhancement and growth of ferromagnetism with the increase in Ni content of Zn1−xNixO thin films at room temperature.

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Section: Introductionmentioning

confidence: 99%

Growth of Zn1−xNixO Thin Films and Their Structural, Optical and Magneto-Optical Properties

et al. 2023

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“…This kind of material has been predicted to have great application prospects in spin Field Effect Transistor (FET), spin Light Emitting Diode (LED), and spin Resonant Tunneling Diode (RTD) because of their unique properties in magneto-optic and magneto-electric fields [5,6,7,8,9,10,11]. In recent decades, the application of ZnO-based diluted magnetic semiconductor materials with a wide bandgap in spintronics has attracted much attention from relevant international research fields [12,13,14,15,16,17,18]. Ni-doped ZnO is one of the most widely studied systems, and highly oriented and ordered ZnO nanomaterials are very important in spintronics and magnetic applications [19,20,21,22,23].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Study on Magnetic-Optical Properties of Ni-Doped ZnO Nanorod Arrays

et al. 2019

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Zn1-xNixO nanorod arrays were prepared on Si substrates by magnetron sputtering and hydrothermal methods at 100 °C. We studied the effects of doped concentration and hydrothermal growth conditions on the crystal structure, morphology, photoluminescence, and magnetic properties of Zn1-xNixO nanorod arrays. The research results show that the Zn1-xNixO nanorod have the hexagonal wurtzite structure without the appearance of the second phase, and all samples have a highly preferred orientation of a (002) crystal face. The Zn1-xNixO nanorod arrays exhibit obvious room temperature ferromagnetism with saturation magnetization at 4.2 × 10−4 emu/g, the residual magnetization is 1.3 × 10−4 emu/g and the coercive field is 502 Oe, and also excellent luminescent properties with seven times greater luminous intensity than that of ZnO nanorod arrays. The redshift of the ultraviolet emission peak was found by Ni2+ doping. We further explained the source and essence of the magnetic properties of Zn1-xNixO nanorod arrays and deemed that the magnetic moment mainly comes from the hybrid electron exchange of O 2p and Ni 3d state.

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“…26,27 Numerous methods have been developed to prepare nickel doped ZnO (Ni-ZnO) film. Basri et al 28 synthesized a Ni-ZnO thin film through the sol-gel method using zinc acetate and nickel acetate as precursors. Rambu et al 29 prepared Ni-ZnO films by spin coating method.…”

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confidence: 99%

Liquid Phase Deposition of Nickel-Doped ZnO Film with Enhanced Visible Light Photoelectrocatalytic Activity

Feng

Tian

Okoth³

et al. 2019

J. Electrochem. Soc.

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Metal element doping is an effective way to tune visible light absorption ability and improve the charge carrier separation efficiency of a semiconductor. Herein, we studied the visible light photoelectrocatalytic property of ZnO doped with nickel (Ni-ZnO). The Ni-ZnO film was prepared by using a liquid phase deposition technique. Scanning electron microscopy analysis and X-ray diffraction measurement indicated that the as-prepared Ni-ZnO film comprised of many prismatic wurtzite nanoparticles. X-ray photoelectron spectroscopy analysis indicated that Ni 2+ entered the ZnO lattice. Cyclic voltammetric analysis confirmed that Ni 2+ in the ZnO lattice was electroactive and a pair of Ni 2+ /Ni 3+ redox waves were observed. UV-visible diffuse reflectance and photoluminescence spectra showed that doping of Ni in ZnO improved the visible light utilization and separation of photogenerated charge carriers. The Ni-ZnO film subsequently exhibited a higher photocurrent than the ZnO film. The photoelectrocatalytic activity of the Ni-ZnO film was evaluated by the degradation of tetracycline under visible light illumination. The degradation rate constant for tetracycline on Ni-ZnO film was found to be 1.65 times higher than that of ZnO film.

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Tailoring electronics structure, electrical and magnetic properties of synthesized transition metal (Ni)-doped ZnO thin film

Cited by 18 publications

References 54 publications

Growth of Zn1−xNixO Thin Films and Their Structural, Optical and Magneto-Optical Properties

Growth of Zn1−xNixO Thin Films and Their Structural, Optical and Magneto-Optical Properties

Fabrication and Study on Magnetic-Optical Properties of Ni-Doped ZnO Nanorod Arrays

Liquid Phase Deposition of Nickel-Doped ZnO Film with Enhanced Visible Light Photoelectrocatalytic Activity

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