Influence of Silver Dopant on Morphological, Dielectric and Magnetic Properties of ZnO Nanoparticles

Influence of Silver Dopant on Morphological, Dielectric and Magnetic Properties of ZnO Nanoparticles Silver (Ag)-doped zinc oxide (ZnO) nanoparticles with different compositions, Zn1−x Ag x O (x = 0, 0.02, 0.04, 0.06, 0.08. 0.10), were synthesized by a chemical precipitation method. The formation of a single-phase wurtzite hexagonal crystalline structure for doped ZnO nanoparticles has been investigated using x-ray diffraction. The crystallite size of the samples was evaluated by the Scherrer method and the values go on improving with increases in the concentration of dopant. Scanning electron microscopy and energy dispersive spectroscopy have been used for morphology and composition studies. The crystallite size, dielectric properties and alternating current conductivity of undoped ZnO nanoparticles were significantly affected by Ag doping. At high frequencies, the materials showed high dielectric constants and high conductivity. A detailed examination of the conductivity and dielectric loss with composition were studied in a wide frequency range at room temperature. The magnetic properties exhibited ferromagnetism both for the undoped and doped ZnO nanoparticles at room temperature, apart from saturation magnetization (M s) which increased linearly with dopant concentration. These Ag-doped ZnO nanoparticles can be used in the preparation of spintronic applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Electronic Materials Springer Journals

Influence of Silver Dopant on Morphological, Dielectric and Magnetic Properties of ZnO Nanoparticles

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Publisher
Springer Journals
Copyright
Copyright © 2018 by The Minerals, Metals & Materials Society
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials; Electronics and Microelectronics, Instrumentation; Solid State Physics
ISSN
0361-5235
eISSN
1543-186X
D.O.I.
10.1007/s11664-018-6305-7
Publisher site
See Article on Publisher Site

Abstract

Silver (Ag)-doped zinc oxide (ZnO) nanoparticles with different compositions, Zn1−x Ag x O (x = 0, 0.02, 0.04, 0.06, 0.08. 0.10), were synthesized by a chemical precipitation method. The formation of a single-phase wurtzite hexagonal crystalline structure for doped ZnO nanoparticles has been investigated using x-ray diffraction. The crystallite size of the samples was evaluated by the Scherrer method and the values go on improving with increases in the concentration of dopant. Scanning electron microscopy and energy dispersive spectroscopy have been used for morphology and composition studies. The crystallite size, dielectric properties and alternating current conductivity of undoped ZnO nanoparticles were significantly affected by Ag doping. At high frequencies, the materials showed high dielectric constants and high conductivity. A detailed examination of the conductivity and dielectric loss with composition were studied in a wide frequency range at room temperature. The magnetic properties exhibited ferromagnetism both for the undoped and doped ZnO nanoparticles at room temperature, apart from saturation magnetization (M s) which increased linearly with dopant concentration. These Ag-doped ZnO nanoparticles can be used in the preparation of spintronic applications.

Journal

Journal of Electronic MaterialsSpringer Journals

Published: May 11, 2018

References

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