[G] 相安定性・金属ガラス・準結晶

[40] Structure transitions of the quasicrystalline 1/1 approximant in the Cd-Mg-Ce system

*FARID Labib¹, Nobuhisa Fujita², Satoshi Ohhashi², Hiroyuki Takakura³, Takayuki Shiino⁴, An-Pang Tsai, Ryuji Tamura¹ (1. Department of Material Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan、2. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan、3. Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan、4. Department of Materials Science and Engineering, Uppsala University, Box 35, 751 03 Uppsala, Sweden)

キーワード：Quasicrystals、Rare earth alloys and compounds、Atomic structure、Transmission electron microscopy、Phase diagrams

Two variants of 1/1 approximant in Cd-Mg-Ce system; one with Pn-3 and the other with Fd-3 with a doubled unit cell, are identified.