| 학회 |
한국재료학회 |
| 학술대회 |
2010년 가을 (11/11 ~ 11/12, 무주리조트) |
| 권호 |
16권 2호 |
| 발표분야 |
C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 |
Electrical Properties of [Li0.055(K0.5Na0.5)0.945](Nb1-xSbx)O3 Ceramics |
| 초록 |
Electrical properties of [Li0.055(K0.5Na0.5)0.945](Nb1-xSbx)O3 ceramics were investigated as a function of Sb2O5 content (0.01≤x≤0.09). A morphotrophic phase boundary (MPB) between orthorhombic and tetragonal phase was detected in the entire range of compositions, and the relative ratio of tetragonal phase to orthorhombic phase was increased with Sb2O5 content. With increasing of Sb2O5 content, the electromechanical coupling factor (kp), piezoelectric constant (d33), and dielectric constant (εr) were increased up to x=0.07, and then decreased slightly because orthorhombic-tetragonal polymorphic phase transition temperature (To-t) was shifted to near room temperature. The effects of oxygen octahedral distortion on phase transition temperature as well as the strain characteristics of the specimens were also discussed. |
| 저자 |
이종규1, 여원재1, 조정호2, 김병익2, 김응수1
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| 소속 |
1경기대, 2한국세라믹기술원 |
| 키워드 |
piezoelectrics; electric properties; crystal structure; perovskite
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| E-Mail |
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