1. [1] M. Ando, H. Sugiyama, S. Ichihara, T. Endo, H. Bando, K. Yamasaki, C. Ohbayashi, Y. Chikaura, H. Esumi, A. Maksimenko and G. Li, Jpn. J. Appl. Phys. 45, L740, (2006).
2. [2] S. Takakgi: Acta Crystllogr., 15, 1311 (1962). B. Klar and F. Rustichelli, Dynamical Neutron Diffraction by Ideally Curved Crystals (1973).
3. [3] Y. Suzuki, Y. Chikaura, M. Ando, J. Appl. Phys. 110, 084902 (2011).
4. [4] Y. Epelboin, Acta Cryst. A33, 758-767 (1977).
5. [5] M. Ando, Q. Huo, N. Sunaguchi, K. Hirano, K. Hyodo, T. Yuasa, Y. Wu, Y. Suzuki, Y. Chikaura, T. Takahashi, M.-T. Tang, C.-H. Chu, S. Ichihara, T. Endo, the annual meeting of Applied Physics Society in Japan (APSJ) which will be held on March 15th-16th.