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Journal of Inorganic Materials

Journal of Inorganic Materials >

2010 , Vol. 25 >Issue 3: 255 - 258

DOI: https://doi.org/10.3724/SP.J.1077.2010.00255

Research Paper

Investigation of Microwave Dielectric Properties of (Mg1-xZnx)2SiO4 (0≤x≤1) Ceramics

  • SONG Kai-Xin ,
  • YING Zhi-Hua ,
  • SHAO Li-Huan ,
  • ZHENG Liang ,
  • XU Jun-Ming ,
  • QIN Hui-Bin
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  • College of Electronic Information and Engineering, Hangzhou Dianzi University, Hangzhou 310018, China

Received date: 2009-07-08

  Revised date: 2009-09-21

  Online published: 2010-03-20

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Abstract

The phase evolutions, microstructures, and microwave dielectric properties of (Mg 1-x Znx)2 SiO4 (0≤x≤1) ceramics were investigated. The XRD results show that Mg2SiO4 and Zn2SiO4 are partly limited solid solution in the systems of (Mg 1-x Znx)2 SiO4 ceramics, due to the large differences between their crystal structures. BESEM images show that with the increases of x, the second phase of MgSiO3 will be suppressed, and the occurrence of liquid phase sintering accelerates the growth of crystal grain and aggradations of glass phase in the boundary of grain. The dielectric constants of (Mg 1-x Znx)2 SiO4 ceramics gradually increase because of the polarization of Zn 2+ ion is larger than that of Mg 2+ ion. The microwave properties of (Mg 1-x Znx)2 SiO4 ceramics change with the variant of x value, together with external factors of the secondary phase, porosity and grain size of(Mg 1-x Znx)2 SiO4 ceramics. When x is equal to 0.6, the optimum microwave dielectric properties of (Mg 0.4 Zn 0.6 )2 SiO 4 ceramics is obtained：εr=6.6, Qf=95650GHz, τf=-60×10-6 /℃.

Key words： (Mg 1-x Znx)2 SiO4; ceramics; microwave properties

Cite this article

SONG Kai-Xin , YING Zhi-Hua , SHAO Li-Huan , ZHENG Liang , XU Jun-Ming , QIN Hui-Bin . Investigation of Microwave Dielectric Properties of (Mg1-xZnx)2SiO4 (0≤x≤1) Ceramics[J]. Journal of Inorganic Materials, 2010 , 25(3) : 255 -258 . DOI: 10.3724/SP.J.1077.2010.00255

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