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H. Sato et al.: Macromolecules 41, 4305_4312 (2008).
M. Takata: Acta Cryst. A64, 232_245 (2008).
M. Yokouchi et al.: Polymer. 14, 267_272 (1973).
M. Sakata and M. Sato: Acta Cryst. A46, 263 (1990).
M. Takata and M. Sakata: Acta Cryst. A52, 287 (1996).
H. Tanaka, M. Takata, E. Nishibori, K. Kato, T. Ishii and M.
Sakata: J. Appl. Cryst. 35, 282 (2002).

1)
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ÅßÚ±qÔ£ÉÎµÄ¨èC£ª¶Ý·éÆ·êÎ±Ì q tßÌXybNp^[ª»Ì\¢
ÉÖ·éîñð^¦éàÌÆúÒ³êéB­\É¨¢ÄÍ¿ÌlXÈÊu©çªè³ê½XybNp^[É¨¯éû Êpû üÌ ÖÖ C(q, D)qI(q, f)I(q, f{D)rf/qI(q, f)rf ÌªèÊâ C(q, D) Ì cos WJÌÊÉÂ¢ÄÐîµÄCÀ±uÌÃ«ÉÂ¢ÄÌc_ðsÁ½B

K. A. Nugent: Adv. Phys. 59, 1 (2010).
M. Sutton et al.: Nature 352, 608 (1991).
P. Wochner et al.: Proc. Natl. Acad. Sci. USA 106, 11511(2009).
M. Altarelli et al.: Phys. Rev. B 82, 104207 (2010).
R. P. Kurta et al.: Phy. Rev. B 85, 184204 (2012).
M. Sutton: C. R. Phys. 9, 657 (2008).
I. Inoue et al.: Opt. Express 20, 26878 (2012).

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Ql¶£p¢Ä Fe3O4 Ì Fe ´qÌªõîñÌTCgª£ðsÁ½BFig. 3(a)É Fe3O4 Ì311, 022©ç¾çê½ DAFS Xy
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H. Stragier, J. Cross, J. Rehr, L. Sorensen, C. E. Bouldin and
J. C. Woicik: Phys. Rev. Lett. 69, 3064 (1992).
L. B. Sorensen, J. O. Cross, M. Newville, B. Ravel, J. J. Rehr,
H. Stragier, C. E. Bouldin and J. C. Woicik: Resonant
Anomalous X­ray Scattering 389 (1994).
I. J. Pickering, M. Sansone, J. Mars and G. N. George: J. Am.
Chem. Soc. 115, 6302 (1993).
R. E. Burge, M. A. Fiddy, A. H. Greenaway and G. Ross:
Proc. R. Soc. Lond. A 350, 191 (1976).
S. Sasaki: Rev. Sci. Instrum. 66, 1573 (1995).
K. Kobayashi, H. Kawata and K. Mori: J. Synchrotron Rad. 5,972 (1998).

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1)
2)
3)
4)
5)
6)
7)

D. Yu et al.: J. Phys. Chem. Lett. 1, 2165 (2010).
F. Jaouen et al.: Energy Environ. Sci 4, 114 (2011).
M. Lef àevre et al.: Science 324, 71 (2009).
Y. Nabae et al.: ECS Trans. 25, 463 (2009).
J. Ozaki et al.: Electrochim. Acta 55, 1864 (2010).
Y. Harada et al.: Rev. Sci. Instrum. 83, 013116 (2012).
P. S. Miedema et al.: J. Phys. Chem. C 115, 25422 (2011).

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R. Asahi et al.: Science 293, 269 (2001).
O. Diwald et al.: J. Phys. Chem. B 108, 6004 (2004).
Z. Zhang et al.: J. Catal. 276, 201 (2010).
Y. Kim et al.: J. Phys. Chem. C 115, 18618 (2011).

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T. Takeuchi et al.: Phys. Rev. B 67, 064403 (2003).
Y. Inada et al.: Phil. Mag. B 82, 1867 (2002).
T. Arakane et al.: J. Magn. Magn. Mater. 310, 396 (2007).
K. D. Myers et al.: Phys. Rev. B 60, 13371 (1999).

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úËõ March 2013 Vol.26 No.2  109ÌlÉÜwÌ±ÂÈð¹µ½êÉÍCÄ¶ÍsÂ\ÅÁ½B»êÌCCXDI À±É¨¢ÄCr[Xgbv

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4)
5)
6)
7)
8)

T. Oroguchi and M. Nakasako: Phys. Rev. E, in press.
A. V. Martin et al.: Opt. Express 20, 13501_
13512 (2012).
A. V. Crewe et al.: Science 168, 1338_1340 (1970).
çFúËõ 26, 11_25 (2013).
A. V. Martin et al.: Opt. Express 20, 16650_
16661 (2012).

Æ]¿Å«éBÀÛCX ü©Rdq[U[ðp¢½À
±f[^ÅÍÉ¬pÌæÌ¹ªå«¢êª½­C¡ãC
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J. R. Fienup: Appl. Opt. 21, 2758 (1982).
S. Marchesini et al.: Phys. Pev. B. 68, 140101 (2003).
W. Kodama and M. Nakasako: Phys. Rev. E 84, 021902(2011).

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Ql¶£
1)
2)

3)
4)
5)
6)
7)
8)
9)
10)

J. Miao et al.: Annu. Rev. Phys. Chem. 59, 387_
410 (2008).
W. Kodama and M. Nakasako: Phys. Rev. E 84, 021902
25 (2013); T. Oroguchi(2011)EçFúËõ 26, 11_
and M. Nakasako: Phys. Rev. E, in press.
T. Ishikawa et al.: Nature Photon. 6, 540 (2012).
çF[U[¤ 40, 680 (2012).
Y. Takayama and M. Nakasako: Rev. Sci. Instrum. 83,054301 (2012).
H. Yumoto et al.: Nature Photon. 7, 43 (2013).
äçFúËõ 25, 82_88 (2012).
R. Xu et al.: J. Synchrotron Rad. 18, 293_
298 (2011).
W M. Born and E. Wolf: Principles of Optics 7th (expanded)
edition (Cambridge University Press, Cambridge, 1999).
C. H. Kuo et al.: Adv. Funct. Mater. 17, 3773_
3780 (2007).

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