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 language | English |
|---|---|
| Pages (from-to) | 494-499 |
| Number of pages | 6 |
| Journal | Journal of Alloys and Compounds |
| Volume | 590 |
| DOIs | |
| Publication status | Published - 2014 Mar 25 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
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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 journal › Article
TY - JOUR
T1 - High-Q microwave dielectrics in the (Mg1-xZn x)4Ta2O9 ceramics
AU - Huang, Cheng-Liang
AU - Chu, Chao Hsien
AU - Liu, Fan Shuo
AU - Yu, Pei Ching
PY - 2014/3/25
Y1 - 2014/3/25
N2 - (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.
AB - (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.
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UR - http://www.scopus.com/inward/citedby.url?scp=84892636804&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2013.12.172
DO - 10.1016/j.jallcom.2013.12.172
M3 - Article
VL - 590
SP - 494
EP - 499
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -