Study on the high magnetic field processed ZnO based diluted magnetic semiconductors

Liu, Ying; Li, Jiamei; Yu, Zhongrui; Li, Wenxian; Jin, Hongming; Liu, Yang; Li, Yibing; Skotnicová, Kateřina

doi:10.1016/j.ceramint.2019.07.011

Cited by 18 publications

(2 citation statements)

References 78 publications

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“…[13]. Effective transition-metal-doped ZnO has been proven to be the most promising room-temperature ferromagnetic material [14]. In particular, Co-doped ZnO dilute magnetic semiconductors (DMS) have raised a large interest in recent decades, because no phase transition occurs when the molar amount of cobalt dopant reaches 0.146 [15].…”

Section: Introductionmentioning

confidence: 99%

Deposition of Sol–Gel ZnO:Mg Films and Investigation of Their Structural and Optical Properties

et al. 2022

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This work presents a facile sol–gel method for the deposition of ZnO and ZnO:Mg films. The films are spin coated on silicon and quartz substrates. The impact of magnesium concentrations (0, 0.5, 1, 2 and 3 wt%) and post-annealing treatments (300–600 °C) on the film’s structural, vibrational and optical properties is investigated. Undoped ZnO films crystallize in the wurtzite phase, with crystallite sizes ranging from 9.1 nm (300 °C) to 29.7 nm (600 °C). Mg doping deteriorates the film crystallization and shifting of 002 peak towards higher diffraction angles is observed, indicating the successful incorporation of Mg into the ZnO matrix. ZnO:Mg films (2 wt%) possess the smallest crystallite size, ranging from 6.2 nm (300 °C) to 25.2 nm (600 °C). The highest Mg concentration (3 wt%) results into a segregation of the MgO phase. Lattice constants, texture coefficients and Zn–O bond lengths are discussed. The diminution of the c lattice parameter is related to the replacement of Zn2+ by Mg2+ in the ZnO host lattice. The vibrational properties are studied by Fourier transform infrared (FTIR) spectroscopy. IR lines related to Mg–O bonds are found for ZnO:Mg films with dopant concentrations of 2 and 3 wt%. The optical characterization showed that the transmittance of ZnO:Mg thin films increased from 74.5% (undoped ZnO) to about 89.1% and the optical band gap energy from 3.24 to 3.56 eV. Mg doping leads to a higher refractive index compared to undoped ZnO films. The FESEM (field emission scanning electron microscopy) technique is used for observation of the surface morphology modification of ZnO:Mg films. The doped ZnO films possess a smoother grained surface structure, opposite to the wrinkle-type morphology of undoped sol–gel ZnO films. The smoother surface leads to improved transparency of ZnO:Mg films.

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Section: Introductionmentioning

confidence: 99%

Deposition of Sol–Gel ZnO:Mg Films and Investigation of Their Structural and Optical Properties

et al. 2022

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“…[1][2][3][4][5][6] Yu et al 7 found that V-, Mn-, Fe-, and Co-doped MoSe 2 /h-BN systems exhibited a half-metallic state and magnetic behavior, while there was no spin polarization in the Ni-doped case. Li et al 8 processed ZnO-based thin DMSs with high magnetic field treatments and improved the ferromagnetism at room temperature by adjusting the microstructure and magnetic properties. Phan et al 9 discussed antiferromagnetic (AFM)-ferromagnetic (FM) competition in DMSs and concluded that the AFM state was stabilized when the impurity bands were completely occupied and the magnetic exchange was large enough.…”

Section: Introductionmentioning

confidence: 99%

Tuning the magnetic ordering driven by cationic antisite defects in the Li(ZnMn)As system

Wang,

Tang,

Zhang

et al. 2023

Phys. Chem. Chem. Phys.

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Effect of excitation wavelength and europium doping on the optical properties of nanoscale zinc oxide

Choudhary

Shukla

Sharma

et al. 2020

J Mater Sci: Mater Electron

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Study on the high magnetic field processed ZnO based diluted magnetic semiconductors

Cited by 18 publications

References 78 publications

Deposition of Sol–Gel ZnO:Mg Films and Investigation of Their Structural and Optical Properties

Deposition of Sol–Gel ZnO:Mg Films and Investigation of Their Structural and Optical Properties

Tuning the magnetic ordering driven by cationic antisite defects in the Li(ZnMn)As system

Effect of excitation wavelength and europium doping on the optical properties of nanoscale zinc oxide

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