Crystal-to-Amorphous-to-Crystal (C-A-C) transition

DATABASE, Irradiation - Crystal-to-Amorphous-to-Crystal (C-A-C) transtion 　(update 02/20/2014)  Crystal-to-Amorphous-to-Crystal (C-A-C) transtion

DATABASE, Crystal-to-Amorphous-to-Crystal (C-A-C) transition Table 1 Occurrences of crystal-to-amorphous-to-crystal (C-A-C) transition [1,2] and quasicrystal-to-amorphous-to-crystal (Q-A-C) transition [1,3] by MeV electron irradiation reported to date. Electron irradiation was performed at 2.0 MeV at a dose rate on the order of 1024 m-2s-1 (updated on 02/20/2014). REFERENCE [1] T. Nagase (Contribution): Advanced materials design by irradiation of high energy particles, 　　in: Progress in Advanced Structural and Functional Materials Design, Ed., T. Kakeshita, Springer, 2013. pp. 137-153. 　　ISBN 978-4-431-54063-2 　　　　　http://www.springer.com/materials/structural+materials/book/978-4-431-54063-2 [2] T. Nagase, A. Nino, T. Hosokawa, Y. Umakoshi: Mater. Trans. 48, 1651-1658 (2007). 　　　　　http://www.jim.or.jp/journal/e/48/07/1651.html [3] T. Nagase, T. Hosokawa and Y. Umakoshi: Intermetallics, 14, 1027-1032 (2006). 　　　　　http://dx.doi.org/10.1016/j.intermet.2006.01.021

Crystal-to-Amorphous-to-Crystal (C-A-C) transition 　　　A unique disordering-ordering phase transition, i.e., a crystalline-to-amorphous-to-crystalline (C-A-C) transition [1,2] and quasi-crystal-to-amorphous-to-crystal (Q-A-C) [3] was found in some intermetallic compounds under MeV electron irradiation using HVEM: a new crystalline phase with a crystal structure different from the original intermetallic compound (quashi crystal) appears from an amorphous phase, which is formed by SSA of the compound (quashi crystal). REFERENCE [1] W. Sinkler, D.E. Luzzi, C.W. Allen, Scr. Metall. 28, 863-868 (1993). [2] T. Nagase, Y. Umakoshi: Scripta Mater. 48, 1237-1242 (2003). 　　　　　http://dx.doi.org/10.1016/S1359-6462(03)00056-3 [3] T. Nagase, T. Hosokawa and Y. Umakoshi: Intermetallics, 14, 1027-1032 (2006). 　　　　　http://dx.doi.org/10.1016/j.intermet.2006.01.021 [4] T. Nagase, A. Nino, T. Hosokawa, Y. Umakoshi: Mater. Trans. 48, 1651-1658 (2007). 　　　　　http://www.jim.or.jp/journal/e/48/07/1651.html Figure 1 Typical example of Crystal-to-Amorphous-to-Crystal (C-A-C) transition. Nd2Fe14 B intermetallic compound changes to an amorphous phase (SSA), then solid solution crystalline phase appeares by the irradiation induced crystallization in spite of the same irradiation conditions [4].