| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Temperature stability of piezoelectric properties on the morphotropic phase boundary of BaZrO3‒modified lead‒free KNN‒BLT ceramics |
| 초록 |
Recently, K0.5Na0.5NbO3–based materials are the most promising family of lead–free piezoelectric ceramics in the orientation of replacing lead–based materials. One of the most important techniques to enhance their dielectric and piezoelectric properties is the formation of a morphotropic phase boundary (MPB). In this work, we report and clarify a rhombohedral (R) and tetragonal (T) phase boundary using the lead‒free 0.92(Na0.5K0.5)NbO3–(0.08–x)(Bi0.5Li0.5)TiO3–xBaZrO3 ternary system. The R‒T phase coexistence region is identified in the ceramics with 0.06 ≤ x ≤ 0.07. Based on the temperature‒dependent dielectric properties and X−ray diffraction (XRD) patterns, the crystal’s relatively enhanced d33 and its excellent temperature stability had been successfully demonstrated to be originated from phase transition behaviors of compositions in MPB region. |
| 저자 |
Trang An Duong, Sang Sub Lee, Farruhk Erkinov, Hoang Thien Khoi Nguyen, Chang‒Won Ahn, Hyoung‒Su Han, Jae‒Shin Lee
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| 소속 |
울산대 |
| 키워드 |
lead-free; piezoceramics; temperature stability; morphotropic phase boundary
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| E-Mail |
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