High-Q microwave dielectrics in the (Mg1-xZn x)4Ta2O9 ceramics

Cheng-Liang Huang, Chao Hsien Chu, Fan Shuo Liu, Pei Ching Yu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

(Mg1-xZnx)4Ta2O 9 (x = 0.02-0.08) ceramics were prepared using a solid-state reaction process, and their dielectric properties were characterized at microwave frequency. The formation of solid solutions (Mg1-xZn x)4Ta2O9 were confirmed by the X-ray diffraction patterns. Molecular volumes (Vm) and ionic polarizabilities (αobs) of the specimens were also calculated, which varied linearly from Vm = 323.99 Å, αobs = 61.321 Å3 for (Mg0.98Zn0.02) 4Ta2O9 to Vm = 324.24 Å, αobs = 61.510 Å3 for (Mg0.92Zn 0.08)4Ta2O9. The dielectric properties are strongly dependent on the compositions, the densifications and the microstructures of the specimens. The composition (Mg0.95Zn 0.05)4Ta2O9 has good microwave dielectric properties with an Ér of 12.67, an extremely high Q × f of 385,000 GHz, and a τf of -61.9 ppm/ C. Addition of B2O3 can lower the sintering temperatures of specimens; whereas it also degrades the Q × f values.

Original languageEnglish
Pages (from-to)494-499
Number of pages6
JournalJournal of Alloys and Compounds
Volume590
DOIs
Publication statusPublished - 2014 Mar 25

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Dielectric properties
Microwaves
Microwave frequencies
Chemical analysis
Solid state reactions
Densification
Diffraction patterns
Solid solutions
Sintering
X ray diffraction
Microstructure
Temperature
boron oxide

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Huang, Cheng-Liang ; Chu, Chao Hsien ; Liu, Fan Shuo ; Yu, Pei Ching. / High-Q microwave dielectrics in the (Mg1-xZn x)4Ta2O9 ceramics. In: Journal of Alloys and Compounds. 2014 ; Vol. 590. pp. 494-499.
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abstract = "(Mg1-xZnx)4Ta2O 9 (x = 0.02-0.08) ceramics were prepared using a solid-state reaction process, and their dielectric properties were characterized at microwave frequency. The formation of solid solutions (Mg1-xZn x)4Ta2O9 were confirmed by the X-ray diffraction patterns. Molecular volumes (Vm) and ionic polarizabilities (αobs) of the specimens were also calculated, which varied linearly from Vm = 323.99 {\AA}, αobs = 61.321 {\AA}3 for (Mg0.98Zn0.02) 4Ta2O9 to Vm = 324.24 {\AA}, αobs = 61.510 {\AA}3 for (Mg0.92Zn 0.08)4Ta2O9. The dielectric properties are strongly dependent on the compositions, the densifications and the microstructures of the specimens. The composition (Mg0.95Zn 0.05)4Ta2O9 has good microwave dielectric properties with an {\'E}r of 12.67, an extremely high Q × f of 385,000 GHz, and a τf of -61.9 ppm/ C. Addition of B2O3 can lower the sintering temperatures of specimens; whereas it also degrades the Q × f values.",
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High-Q microwave dielectrics in the (Mg1-xZn x)4Ta2O9 ceramics. / Huang, Cheng-Liang; Chu, Chao Hsien; Liu, Fan Shuo; Yu, Pei Ching.

In: Journal of Alloys and Compounds, Vol. 590, 25.03.2014, p. 494-499.

Research output: Contribution to journalArticle

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