CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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High-frequency properties of oil-phase-synthesized ZnO nanoparticles |
Ding Hao-Feng (丁浩峰)a b, Yang Hai-Tao (杨海涛)b, Liu Li-Ping (柳丽平)b, Ren Xiao (任肖)b, Song Ning-Ning (宋宁宁)b, Shen Jun (沈俊)c, Zhang Xiang-Qun (张向群)b, Cheng Zhao-Hua (成昭华)b, Zhao Guo-Ping (赵国平)a b |
a College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610068, China; b Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; c Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract Monodispersive ZnO nanoparticles each with a hexagonal wurtzite structure are facilely prepared by the high-temperature organic phase method. The UV-visible absorption peak of ZnO nanoparticles presents an obvious blue-shift from 385 nm of bulk ZnO to 369 nm. Both the real part and the image part of the complex permittivity of ZnO nanoparticles from 0.1 GHz to 10 GHz linearly decrease without obvious resonance peak appearing. The real parts of intrinsic permittivity of ZnO nanoparticles are about 5.7 and 5.0 at 0.1 GHz and 10 GHz respectively, and show an obvious size-dependent behavior. The dielectric loss angle tangent (tanδ) of ZnO nanoparticles with a different weight ratio shows a different decreasing law with the increase of frequency.
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Received: 14 May 2014
Revised: 18 September 2014
Accepted manuscript online:
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PACS:
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78.67.Bf
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(Nanocrystals, nanoparticles, and nanoclusters)
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81.16.Be
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(Chemical synthesis methods)
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62.25.Fg
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(High-frequency properties, responses to resonant or transient (time-dependent) fields)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274370 and 51471185) and the National Basic Research Program of China (Grant Nos. 2012CB933102 and 2011CB921801). |
Corresponding Authors:
Yang Hai-Tao, Zhao Guo-Ping
E-mail: htyang@iphy.ac.cn;zhaogp@uestc.edu.cn
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Cite this article:
Ding Hao-Feng (丁浩峰), Yang Hai-Tao (杨海涛), Liu Li-Ping (柳丽平), Ren Xiao (任肖), Song Ning-Ning (宋宁宁), Shen Jun (沈俊), Zhang Xiang-Qun (张向群), Cheng Zhao-Hua (成昭华), Zhao Guo-Ping (赵国平) High-frequency properties of oil-phase-synthesized ZnO nanoparticles 2015 Chin. Phys. B 24 027804
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