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논문 기본정보
Bi0.5(Na0.78K0.22)0.5TiO3 세라믹스의 A-site 비화학양론이 유전 및 전기적 특성에 미치는 영향
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | 전기전자재료학회논문지 = Journal of the Korean institute of electronic material engineers |
| ISSN | 1226-7945, |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | 박정수,이규탁,윤지선,조정호,정영훈,백종후 |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2014-01-01 |
| 초록 | $Bi_{0.5+x}(Na_{0.78}K_{0.22})_{0.5-3x}TiO_3$ ceramics with an excess $Bi^{3+}$ and a deficiency of $Na^+$ and $K^+$ were synthesized by a conventional solid state reaction method. The structure and morphology of $Bi_{0.5+x}(Na_{0.78}K_{0.22})_{0.5-3x}TiO_3$ ceramics were characterized by X-ray diffraction and field emission scanning electron microscopy. The electric polarization and mechanical strain induced by external electric field, and the temperature dependence of dielectric constant were investigated. These results demonstrated that an ergodic relaxor phase can be induced by controls of the mole ratio of $Bi^{3+}$ , $Na^+$ and $K^+$ . A phase boundary between non-ergodic and ergodic relaxor phases can be observed at ambient temperature. The ergodic relaxor phase can be transferred to the ferroelectric phase by application of the electric field. The stability of the induced ferroelectric phases strongly depends on the mole ratio of $Bi^{3+}$ , $Na^+$ and $K^+$ . The maximum strain of 0.31% was observed in $Bi_{0.51}(Na_{0.78}K_{0.22})_{0.47}TiO_3$ ceramics sintered at $1,150^{ circ}C$ for 2 h. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201436438764553 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
|---|---|
| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | Lead-free,Dielectric function,Electrical properties, lt,TEX gt,$Bi_{0.5+x}(Na_{0.78}K_{0.22})_{0.5-3x}TiO_3$ lt,/TEX gt |