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Oxygen vacancy controlled tunable magnetic and electrical transport properties of (Li, Ni)-codoped ZnO thin films
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In this article, the electrical, magnetic, and magnetotransport properties of Li-Ni codoped ZnO thin films in the electron dominated, hole dominated, and insulating regimes were investigated.Abstract:
We investigated the electrical, magnetic, and magnetotransport properties of Li–Ni codoped ZnO thin films in the electron dominated, hole dominated, and insulating regimes. In a narrow window of oxygen growth pressure, 10−3–10−2 mbar, the films exhibited p-type conductivity with a maximum hole concentration ∼8.2×1017 cm−3. Magnetoresistance exhibited by the films is attributed to scattering of charge carriers due to localized magnetic moments. Insulating films showed superparamagnetic behavior, whereas both n-type and p-type films showed room temperature ferromagnetism. Our findings suggest that oxygen vacancies and Ni ions in cation site are jointly responsible for ferromagnetism that is not dependent on the carrier type.read more
Citations
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RaoP-Type ZnO Materials: Theory, Growth, Properties, and Devices
TL;DR: In this article, the authors discuss p-type ZnO materials: theory, growth, properties and devices, comprehensively, and summarize the growth techniques for p- type ZnOs.
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Oxygen Vacancy Promoted Heterogeneous Fenton-like Degradation of Ofloxacin at pH 3.2-9.0 by Cu Substituted Magnetic Fe3O4@FeOOH Nanocomposite
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Room-Temperature Ferromagnetism of Flowerlike CuO Nanostructures
TL;DR: In this article, the results of X-ray diffraction and Raman and Xray photoelectron spectroscopies show that the samples annealed at 400, 600, and 800 °C have a typical monoclinic structure and are absent of impurity phases.
References
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Journal ArticleDOI
Effect of oxygen annealing on Mn doped ZnO diluted magnetic semiconductors
TL;DR: In this article, the properties of Zn1−xMnxO (x=0.01−0.1) thin films grown on c-plane sapphire single crystals by pulsed laser deposition were investigated.
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Magnetoresistance in Degenerate CdS: Localized Magnetic Moments
R. P. Khosla,J. R. Fischer +1 more
TL;DR: In this paper, the magnetoresistance of CdS samples doped with In has been measured and it was found that the observed magnetoreduction is negative to much higher temperatures and fields than has been reported for any other semiconductor.
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Low-resistivity, stable p-type ZnO thin films realized using a Li–N dual-acceptor doping method
TL;DR: In this article, a dual-acceptor doping method was developed to prepare p-type ZnO thin films by pulsed laser deposition, and the lowest room-temperature resistivity was found to be ∼ 0.93Ωcm.
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Donor and acceptor competitions in phosphorus-doped ZnO
TL;DR: In this article, three growth regions were identified to obtain ZnO films with different conduction types in the low-temperature photoluminescence (PL) spectra.
Journal ArticleDOI
Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition
TL;DR: In this article, a ZnO-based light emitting diodes were fabricated on c-plane sapphire using Ga p-i-n heterostructures, and the electroluminescence spectra showed deep level emission at low bias but near band edge ultraviolet emission at high voltage bias.