| 학회 | 한국재료학회 |
| 학술대회 | 2012년 가을 (11/07 ~ 11/09, 라카이샌드파인 리조트) |
| 권호 | 18권 2호 |
| 발표분야 | A. 전자/반도체 재료(Electronic and Semiconductor Materials) |
| 제목 | Effects of the Annealing Temperature on the Ferroelectric Properties of AD PbTiO3 Film |
| 초록 | PbTiO3 (PT) is a prototypical ferroelectric material that serves as one end member for the Pb(Zr1-xTix)O3 solid solution. PT has a single phase transition from a ferroelectric tetragonal structure to a paraelectric cubic one at 766 K and ambient pressure. Since PT has high tetragonality (c/a ratio ~1.06) and experiences a large volume change at the phase transition temperature (Tc), the fabrication of uncracked polycrystalline PT ceramics or thick films is extremely difficult. We investigated the effect of annealing temperature on ferroelectric and piezoelectric properties of aerosol deposed PbTiO3 films. Interestingly AD PT film showed the typical ferroelectric properties and higher Curie temperature. Ferroelectric properties measured were explained with structural modification due to nano-size grain and upshift of Curie temperature was explained with the stress exerted onto film. In detail, c/a ration was diminished due to the nano-size grain and Curie temperature was upshifted due to the compressive stress. In this presentation, we changed the annealing temperature to modulate the grain size and stress and characterized the ferroelectric and piezoelectric properties. |
| 저자 | Jungkeun Lee1, Soowhan Lee2, Jong-Pil Lee3, Yun-Soo Lim4, Jungho Ryu1, Dong-Soo Park2, Dae-Yong Jeong3 |
| 소속 | 1School of Materials Engineering, 2Inha Univ., 3Incheon 402-751, 4Korea |
| 키워드 | PbTiO3 film; Aerosol deposition; Ferroelectric; Annealing temperature. |
