[1] Nasu K 1997 Relaxations of Excited States and Photoinduced
Structural Phase Transitions (Berlin: Springer)

[2] Sato O, Iyoda T, Fujishima A and Hashimoto K 1996 Science
272 704

[3] Koshihara S, Tokura Y, Takeda K and Koda T 1992 Phys.
Rev. Lett. 68 1148

[4] Miyano K, Tanaka T, Tomioka Y and Tokura Y 1997 Phys. Rev.
Lett. 78 4257

[5] Liu X J, Moritomo Y, Nakamura A and Kojima N 2000 Phys.
Rev. B 61 20

[6] Liu X J, Moritomo Y, Kawamoto T, Nakamoto A and Kojima N 2003
Phys. Rev. B 67 012102

[7] Hauser A, Jeftic J, Romstedt H, Hinek R and Spiering H 1999
Coord. Chem. Rev. 190-192 471

[8] Cavalleri A, Chong H H W, Fourmaux S, Glover T E, Heimann P E,
Kieffer J C, Mun B S, Padmore H A and Schoenlein R W 2004 Phys.
Rev. B 69 153106

[9] Carp O, Huisman C L and Reller A 2004 Prog. Solid
State Chem. 32 33

[10] Yoshii T, Hamanaka Y, Moritomo Yand Nakamura A 2004 J.
Lumin. 108 225

[11] Persson C and Silva A F D 2005 Appl. Phys. Lett.
86 231912

[12] Guelfucci M F 2001 J. Phys. Chem. Solids 62 1961

[13] Zylbersztejn A and Mott N F 1975 Phys. Rev. B 11
4383

[14] Laad M S, Craco L and M\"uller-Hartmann E 2006 Phys. Rev.
B 73 195120

[15] Schwarz K 1986 J. Phys. F: Met. Phys. 16 L211

[16] Yamamoto R, Moritomo Y and Nakamura A 2000 Phys. Rev. B
61 5062

[17] Wu X W, Niu D L and Liu X J 2006 Chin. Phys. Lett.
23 3072

[18] Kise T, Ogasawara T, Ashida M, Tomioka Y, Tokura Y and
Kuwata-Gonokami M 2000 Phys. Rev. Lett. 85 1986

[19] Wu D J, Wu X W and Liu X J 2006 Chin. Phys. Lett. 23
1903

[20] Bonilla C M, Land\i nez Te llez D A, Arbey Rodr\i guez
J, Vera Lopez E and Roa-Rojas J 2007 Physica B 398 208

[21] Szotek Z, Temmermana W M, Svane A, Petit L, Stocks G M and Winter
H 2004 J. Magn. Magn. Mater. 272 1816

[22] Jeng H T and Guo G Y 2002 J. App. Phys. 92 951

[23] Niu D L and Liu X J 2007 J. Lumin. 122 155

[24] Sorantin P I and Schwarz K 1992 Inorg. Chem. 31 567

[25] Savrasov S Y 1996 Phys. Rev. B 54 16470

[26] Anisimov V I and Gunnarsson O 1991 Phys. Rev. B
43 7570

[27] Solovyev I V, Dederichs P H and Anisimov V I 1994 Phys.
Rev. B 50 16861

[28] Toropova A, Kotliar G, Savrasov S Y and Oudovenko V S 2005
Phys. Rev. B 71 172403

[29] Korotin M A, Anisimov V I, Khomskii D I and Sawatzky G A 1998
Phys. Rev. Lett. 80 4305

[30] Tsujioka T, Mizokawa T, Okamoto J, Fujimori A, Nohara M, Takagi H,
Yamaura K and Takano M 1997 Phys. Rev. B 56 R15509

[31] Thamer B J, Douglass R M and Staritzky E 1957 J. Am. Chem.
Soc. 79 547

[32] Matsuda K, Machida A, Moritomo Y and Nakamura A 1998 Phys.
Rev. B 58 4203