| Pàgina inicial > Growth of K/sub 3/Li/sub 2/Nb/sub 5/O/sub 15/ and KNbO/sub 3/ ferroelectric fiber crystals by pulling-down technique |
| Article | |
| Title | Growth of K/sub 3/Li/sub 2/Nb/sub 5/O/sub 15/ and KNbO/sub 3/ ferroelectric fiber crystals by pulling-down technique |
| Author(s) | Chani, V I ; Nagata, K ; Fukuda, T |
| Affiliation | (Inst of Mater Res) |
| Publication | 1998 |
| In: | Ferroelectronics 218, 1-4 (1998) pp.9-20 |
| Abstract | Growth of K/sub 3/Li/sub 2/Nb/sub 5/O/sub 15/ (KLN) and KNbO/sub 3/ (KN) crystals by the micro-pulling-down method is reported. We have systematically studied the growth conditions allowing fabrication of relatively large, macro $9 defects free, and colorless fiber crystals with pulling rate of 0.1-1.0 mm/min. The K/sub 2/O-Nb/sub 2/O/sub 5/- Li/sub 2/O ternary has been studied in the vicinity of stoichiometric compositions of K/sub 3/Li/sub 2/Nb/sub 5/O/sub $9 15/ and KNbO/sub 3/. KLN and KN phase fields have been identified by direct growth experiments. It was found that addition of 1-6 mol.554330f Li/sub 2/O into the KNbO/sub 3/ melt avoids K/sub 4/Nb/sub 6/O/sub 17/ second phase $9 formation and decreases blue coloration of the KN crystals. Growth of Ta-substituted KLN and KN crystals is also reported. (14 refs). |