Acknowledgements

Various studies reviewed in this Chapter were performed with Ms. Satoko Oda, Mr. Yusuke 0/1)%\_z
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.^z1/1'!z1'1¥ moto, Dr. Yutaka Miura, Mr. Yoichi Negishi, Dr. Takashi Takeuchi, Prof. Masahiko Aihara, .+"^z
%\*+.1z'! \_z.+"^z%.+\*+1z1\*%! z \* z.+"^z!\*&%z.)'%z +"z+'+\$)z¥ tional University, Mr. Yasushi Fukai, Mr. Katsuya Fukae, Mr. Naoto Takechi, Dr. Yuan Gao, and Mr. Shinji Iizuka of Kanto Denka Kogyo Co., Ltd., and Dr. Tomohisa Kato, Dr. Hajime Okumura and Dr. Kazuo Arai of National Institutes of Advanced Science and Technology. Mr. N. Okumura of Keyence Co., Ltd., is very much appreciated for the surface roughness evaluation. X-ray topography experiment has been performed under the approval of the Photon Factory Program Advisory Committee (Proposal No. 2006G286).
