| 학회 |
한국재료학회 |
| 학술대회 |
2019년 봄 (05/15 ~ 05/17, 평창 알펜시아 리조트) |
| 권호 |
25권 1호 |
| 발표분야 |
G. 나노/박막 재료 분과 |
| 제목 |
Dependence of Quality factor(Qf) on the Te6+ substitution of CaMo1-xTexO4 (0.01≤ x ≤ 0.07) Ceramics CaMo1-xTexO4 (0.01≤ x ≤ 0.07) 세라믹스의 Te6+ 치환에 대한 Quality factor(Qf) 의존성 |
| 초록 |
Effects of Te6+ substitution on the quality factor(Qf) of CaMo1-xTexO4 (0.01≤ x ≤ 0.07) ceramics were investigated as a function of sintering temperature from 800℃ to 900℃. Microwave dielectric properties of the specimens were strongly dependent on the sintering temperature and Te6+ content of CaMo1-xTexO4. For the specimens sintered at lower temperature than 900℃ and/or with higher Te6+ content(x) of x=0.05, the quality factor(Qf) could not be measured due to the lower density and/or the formation of unknown phase. For the specimens sintered at 900-950℃ for 2h, a single phase with scheelite structure was observed through the entire range of compositions. With an increase of Te6+ content, the Qf value of specimens was increased up to x=0.03 and then decreased due to the lower relative density than 90%. With the increase of Te6+ content, the dielectric constants(K) increased slightly, while the temperature coefficient of resonant frequency(TCF) were not changed remarkably. The specimens of CaMo0.97Te0.03O4 sintered at 950℃ for 2h showed good microwave dielectric properties (Qf = 185,400GHz, K = 10.72, TCF = -40.56ppm/℃). |
| 저자 |
Ju Hyeon Kim1, Eung Soo Kim2
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| 소속 |
1Department of Materials Engineering, 2Kyonggi Univ. |
| 키워드 |
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| E-Mail |
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