Synthesis of Disordered Ba(Zn1/3Ta2/3)O3 by Spark Plasma Sintering and Its Microwave $Q$ Factor
スポンサーリンク
概要
- 論文の詳細を見る
Dense Ba(Zn1/3Ta2/3)O3(BZT) with disordered perovskite structure ($Pm3m$) was synthesized by spark plasma sintering (SPS), and its electronic properties at microwave frequency were studied. Its $Q$ factor, crystal structure and microstructure were compared with those of disordered and ordered BZT synthesized by conventional solid-state reaction (SSR). By SPS, disordered BZT with high density was obtained in an extremely short sintering time for 5 min between 1150 and 1300 °C under 30 MPa. The disordered BZT with high density ($=7.62$ g/cm3) exhibited a significantly high $Q\cdot f$ ($=53{,}400$ GHz). It was approximately 5 times higher value than that of low density samples (5.0–6.0 g/cm3) synthesized by conventional SSR. For the high-$Q\cdot f$ samples, their crystallization were improved simultaneously with densification. On the other hand, there was no significant improvement in the $Q$ factor observed for BZT grains synthesized by SPS. These results suggest that crystallization with densification in BZT plays a major role in $Q$ factor improvement rather than the effects of structural ordering and grain boundary.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-09-30
著者
-
Ohsato Hitoshi
Materials Sci. And Engineering Nagoya Inst. Of Technol.
-
KAKIMOTO Ken-ichi
Materials Science and Engineering, Nagoya Institute of Technology
-
Ohsato Hitoshi
Materials Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
-
Koga Eiichi
Department of Engineering, Panasonic Electronic Devices Co., Ltd., Chitose, Hokkaido 066-8502, Japan
-
Moriwake Hiroki
Materials Research and Development Laboratory, Japan Fine Ceramics Center, Nagoya 456-8587, Japan
-
Kakimoto Ken-ichi
Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
関連論文
- Liquid phase deposition process to deposit TiO2 in the porous Mg2SiO4 ceramics
- Oxygen permeation and microstructure of intergrowth perovskite Sr-La-Fe-Co based mixed-conductive ceramics
- Structure and Electrical Properties of Lead-Free (Na_K_)NbO_3-BaTiO_3 Ceramics
- Microwave Dielectric Properties of Ba_Sm_Ti_O_ (x=2/3) Ceramics Produced by Spark Plasma Sintering
- Microwave Dielectric Properties of (Ca1-xSrx)SiO3 Ring Silicate Solid Solutions
- Microwave Dielectric Properties of Perovskite-Like Structured Ba8Ta6(Ni1-xMx)O24 ($\textit{M}=\text{Co}$, Cu, and Zn) Solid Solutions
- Crystal Structure and Microwave Dielectric Properties of Aeschynite-Type $R$(W0.5Ti1.5)O6 ($R = \text{Nd}$, Sm, Eu, Gd and Dy) Ceramics
- Microwave Dielectric Properties of Textured BaLa4Ti4O15 Ceramics with Layered Perovskite Structure
- High-Q Microwave Dielectric SrTiO3-Doped MgTiO3 Materials with Near-Zero Temperature Coefficient of Resonant Frequency
- Enhancement of Internal Dielectric Constant of Metallodielectrics Made from Layers of Nonmagnetic Wires
- Synthesis of Disordered Ba(Zn1/3Ta2/3)O3 by Spark Plasma Sintering and Its Microwave $Q$ Factor
- Synthesis and Crystal Structure–Microwave Dielectric Property Relations in Sn-Substituted Ca3(Zr1-xSnx)Si2O9 Solid Solutions with Cuspidine Structure
- Structure and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3-BaTiO3 Ceramics