High-frequency properties of oil-phase-synthesized ZnO nanoparticles
High-frequency properties of oil-phase-synthesized ZnO nanoparticles
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油相合成ZnO纳米粒子的高频特性
DOI:
10.1088/1674-1056/24/2/027804
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发表时间:
2015-02
影响因子:
1.7
通讯作者:
Zhao Guo-Ping
中科院分区:
文献类型:
--
作者:
Shen Jun;Zhang Xiang-Qun;Cheng Zhao-Hua;Zhao Guo-Ping
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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