우리 학과 4학년에 재학중인 임준휘 학생이 최근 SCI 저널에 논문을 투고하였습니다. 학과 내규에 따라 학과에서 임준휘 학생에게 연구장학금(십만원)을 지급하였습니다. 축하합니다!!
– 논문제목: Optical evidence on the gamma-ray irradiation effects on the ferroelectric Pb(Zr0.52Ti0.48)O3 thin films
– 논문저자: 임준휘, 이윤상(숭실대학교), 이상아, 부상돈(전북대학교)
– 논문초록: We investigated the visible emission property of the gammy-ray irradiated Pb(Zr,Ti)O3 (PZT) thin films with the various total doses up to 1000 kGy. The PZT thin films were prepared on the Pt/Ti/SiO2/Si substrates by using a sol–gel method with a spin-coating process. It was found that the visible emission emerges near 550 nm with the gamma-ray irradiation. The intensity of the emission increased with the increasing dose amount. The spectral feature of the gamma-ray induced emission was quite narrow, which was distinguished from that formed by normal defects such as oxygen vacancy. We suggest that the gamma-ray irradiation should generate a specific type of defect state inside the PZT films, which could be detected by the low temperature photoluminescence spectroscopy.
– 투고 저널: Journal of the Korean Physical Society (JKPS, Springer)