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Abstract
Silver lithium niobate (Ag 0.9 Li 0.1 NbO 3 , ALN10) single crystals were grown by a slow cooling method without flux under oxygen flow. By optimizing growth conditions, the ALN10 crystals with sizes of ca. 30 mm cube were successfully grown. Its crystal symmetry was investigated by high energy X-ray diffraction, and the space group at 24°C was assigned to the ferroelectric Pc2 1 b orthorhombic symmetry. The ALN10 crystals were oriented along the [010]o and the [110]o directions, and their piezoelectric properties were measured using the 31 resonators.
Acknowledgment
We would like to thank Dr. Hiroaki Takeda of Nara Institute of Science and Technology for his helpful suggestions and discussion on the analysis of the back reflection Laue analysis and the crystal quality. The synchrotron radiation experiment was performed at the BL02B2 in the SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Program No. 2005A0693 and 2006A1617). This study was partially supported by (1) a Grant-in-Aid for Scientific Research (16656201 and 18360312) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan, (2) the Japan Securities Scholarship Foundation, (3) the Toray Science Foundation, (4) the Kurata Memorial Hitachi Science and Technology Foundation, (5) the Electro-Mechanic Technology Advanced Foundation, (6) the Tokuyama Science Foundation and (7) the Yazaki Memorial Foundation for Science and Technology.