Tokyo Metropolitan Institute of Technology
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
Tokyo Metropolitan Institute of Technology
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
宇宙利用シンポジウム 第21回 平成16年度
雑誌名(英)
Space Utilization Research: Proceedings of the Twenty-first Space Utilization Symposium
ページ
13 - 16
発行年
2005-03
抄録（英）
It is known that no rare earth iron garnet can form with a lattice parameter greater than 1.2540 nm which is Maximum Lattice Constant (MLC). In the present study, the melt with Nd(x)Sm(3-x)Fe5O12 composition was undercooled in an aerodynamic levitator and splat-quenched by copper anvils in order to obtain the metastable garnet phase with the lattice parameter greater than MLC (x = 0.38). X-Ray Diffraction (XRD) results indicated that the peak intensity of metastable garnet phase decreased with increasing the substitution x from 0.38 to 0.2 and finally disappeared at x = 2.2. The metastable garnet phase possessed the same composition as the starting composition. The maximum Nd substitution obtained using the splat quenching method was x = 2.0. Moreover, the amorphous phase was found in the central part of the sample, which was confirmed by micro focus XRD.
急冷凝固法を用いた準安定希土類鉄ガーネットの生成
