| 학회 | 한국재료학회 |
| 학술대회 | 2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 | 22권 2호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | Analysis of surface defect in RE:YAG (RE = Nd3+, Er3+, Yb3+) single crystal using chemical polishing and etching |
| 초록 | Yttrium aluminum garnet (Y3Al5O12) has good thermal stability, excellent optical and mechanical properties which makes it very suitable for host matrix material. Trivalent rare-earth doped Y3Al5O12 are important photonic materials with a wide range of applications as active laser materials, phosphors and scintillators1,2. Y3Al5O12 (YAG) single crystals doped with rare-earth ions (Nd3+, Er3+, and Yb3+) were successfully grown by the Czochralski method. The conditions for chemical polishing and etching technique were investigated to reveal surface defects in RE:YAG (RE = Nd3+, Er3+, Yb3+) single crystals. The optimal condition for chemical polishing was in H3PO4 solution at 330 ℃ for 30 minutes with a specimen fixed in the vertical direction. In addition, the optimal condition for chemical etching was in H3PO4 solution at 260 ℃ for 1 hour, and 70~80 μm sized triangular etch pits were observed on (111) face. As a result of defect density analysis, 1.9 × 103/cm2 for Nd(1%):YAG, 4.3 × 102/cm2 for Er(7.3%):YAG, and 5.1 × 102/cm2 for Yb(15%):YAG were measured. 1. A. A. Kaminskii, in Laser Crystals, edited by H. F. Ivey (Springer, New York, 1981). 2. M. A. Dubinskii, K. L. Schepler, V. V. Semashko, R. Yu. Abdulsabirov, S. L. Korableva, A. K. Naumov, J. Mod. Opt. 45, 221 (1998). |
| 저자 | Jang Bo Shim, Young Kuk Lee |
| 소속 | Korea Research Institute of Chemical Technology |
| 키워드 | <P>Yttrium aluminum garnet (Y<SUB>3</SUB>Al<SUB>5</SUB>O<SUB>12</SUB>); Chemical polishing; Chemical etching; Etch pit density</P> |
