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The Enhanced Thermal Stability of (Mg0.95Ni0.05)2TiO4 Dielectric Ceramics Modified by a Multi-Phase Method.
Shen, Chun-Hsu; Shen, Ting-Wei; Hsieh, Tsai-Yu; Lan, Kai-Chun; Hsu, Shen-Hsien; Wang, Ching-Hsuan; Lin, Yu-Ting; Wu, Wen-Fang; Tseng, Zong-Liang.
Afiliação
  • Shen CH; Department of Electronic Engineering, Ming Chuan University, Taoyuan City 333, Taiwan.
  • Shen TW; Department of Mechanical Engineering, National Taiwan University, Taipei 106, Taiwan.
  • Hsieh TY; Department of Electronic Engineering, Ming Chuan University, Taoyuan City 333, Taiwan.
  • Lan KC; Department of Electronic Engineering, Ming Chuan University, Taoyuan City 333, Taiwan.
  • Hsu SH; Department of Electronic Engineering, Ming Chuan University, Taoyuan City 333, Taiwan.
  • Wang CH; Department of Electronic Engineering, Ming Chuan University, Taoyuan City 333, Taiwan.
  • Lin YT; Department of Electronic Engineering and Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243, Taiwan.
  • Wu WF; Department of Mechanical Engineering, National Taiwan University, Taipei 106, Taiwan.
  • Tseng ZL; Department of Electronic Engineering and Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243, Taiwan.
Materials (Basel) ; 16(8)2023 Apr 10.
Article em En | MEDLINE | ID: mdl-37109833
ABSTRACT
The thermal stability of (Mg0.95Ni0.05)2TiO4 dielectric ceramics has been improved by mixing with CaTiO3 phases owing to higher positive temperature coefficients. The pure (Mg0.95Ni0.05)2TiO4 and the mixture phase systems of CaTiO3-modified (Mg0.95Ni0.05)2TiO4 were verified by XRD diffraction patterns to ensure the crystallite of different phases. The microstructures of the CaTiO3-modified (Mg0.95Ni0.05)2TiO4 were observed by SEM and EDS to investigate the relation between element ratios and grains. As a result, it can be seen that the thermal stability of the CaTiO3-modified (Mg0.95Ni0.05)2TiO4 can be effectively enhanced, compared with the pure (Mg0.95Ni0.05)2TiO4. Moreover, the radio frequency dielectric performances of CaTiO3-modified (Mg0.95Ni0.05)2TiO4 dielectric ceramics are strongly dependent upon the density and the morphology of the specimens. The champion sample with the ratio of (Mg0.95Ni0.05)2TiO4 and CaTiO3 of 0.920.08 showed an εr value of 19.2, an Qf value of 108,200 GHz, and a τf value of -4.8 ppm/°C, which may encourage (Mg0.95Ni0.05)2TiO4 ceramics to broaden the range of novel applications and match the requirements of 5G or next-generation communication systems.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Taiwan
Texto completo
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XML
PubMed Links
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Taiwan