| 학회 |
한국재료학회 |
| 학술대회 |
2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 |
20권 1호 |
| 발표분야 |
A. 전자/반도체 재료(Electronic and Semiconductor Materials) |
| 제목 |
Dependence of Microwave Dielectric Properties of (Mg0.95Ni0.05)(Ti1-xSnx)O3 Ceramics on Structural Characteristics |
| 초록 |
Relationship between crystal structural characteristics and microwave dielectric properties of (Mg0.95Ni0.05)(Ti1-xSnx)O3 (MNTS, 0 ≤ x ≤ 0.25) ceramics were investigated. With increase of Sn4+ substitution up to 0.15, the single phase with ilmenite structure was observed, while the secondary phase of SnO2 was confirmed for the specimens with further Sn4+ substitution. The grain size of the specimens decreased and the number of pores increased with increasing Sn4+ substitution. However, the quality factor (Qf) of the MNTS showed improved value with increasing Sn4+ substitution. For the specimens with single phase of ilmenite, the Qf of the specimens significantly depended on the B-site bond valence of the specimens. The dielectric constants (K) of the specimens decreased with increase of Sn4+ substitution due to the lower dielectric polarizability of Sn4+ than Ti4+. The temperature coefficient of resonant frequency (TCF) of the specimens decreased with Sn4+ substitution due to the decrease of octahedral distortion of the specimens. |
| 저자 |
Young Jun Eoh1, Hyun Jin Jo2, Eung Soo Kim3
|
| 소속 |
1Department of Materials Engineering, 2Kyonggi Univ., 3Suwon |
| 키워드 |
Microwave Dielectric Properties; Structural Characteristics
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| E-Mail |
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