TY - JOUR
T1 - Thermal and optical properties of glass and crystalline phases formed in the binary R2O3-Al2O3 (R = La-Lu and Y) system
AU - Vijaya Kumar, Malahalli
AU - Ishikawa, Takehiko
AU - Basavalingu, B.
AU - Okada, Junpei T.
AU - Watanabe, Yuki
N1 - Funding Information:
The authors wish to acknowledge Dr. A. Masuno and Mr. Y. Watanabe, Institute of Industrial Science, The University of Tokyo, Japan, for providing the density and refractive indices measurements and the valuable discussions during this work. One of the authors, M. S. V. Kumar, is grateful for the financial support from the Japan Society for the Promotion of Science (JSPS).
PY - 2013/5/21
Y1 - 2013/5/21
N2 - Rare-earth aluminate (RAlO3, R = La-Lu and Y) glass and crystalline phases were prepared by containerless levitation in an aerodynamic levitation furnace. In the RAlO3 system, La, Nd and Sm aluminum perovskites solidified as glass and Eu-Lu and Y aluminum perovskites solidified as crystalline phases. The glass forming region decreased with decreasing ionic radius of the rare-earth element. Scanning electron microscopy images and x-ray diffraction results revealed the formation of a single RAlO3 phase from the undercooled melt. The glass transition temperature, Tg, and density increased and the molar volume decreased with decreasing rare-earth element ionic radius. The refractive index at 589 nm exceeds 1.85 in each composition and a transparency of approximately 72% was achieved for the LaAlO3 glass.
AB - Rare-earth aluminate (RAlO3, R = La-Lu and Y) glass and crystalline phases were prepared by containerless levitation in an aerodynamic levitation furnace. In the RAlO3 system, La, Nd and Sm aluminum perovskites solidified as glass and Eu-Lu and Y aluminum perovskites solidified as crystalline phases. The glass forming region decreased with decreasing ionic radius of the rare-earth element. Scanning electron microscopy images and x-ray diffraction results revealed the formation of a single RAlO3 phase from the undercooled melt. The glass transition temperature, Tg, and density increased and the molar volume decreased with decreasing rare-earth element ionic radius. The refractive index at 589 nm exceeds 1.85 in each composition and a transparency of approximately 72% was achieved for the LaAlO3 glass.
UR - http://www.scopus.com/inward/record.url?scp=84878400840&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878400840&partnerID=8YFLogxK
U2 - 10.1063/1.4805536
DO - 10.1063/1.4805536
M3 - Article
AN - SCOPUS:84878400840
SN - 0021-8979
VL - 113
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 19
M1 - 193503
ER -