[1] Wentorf R H 1962 J. Chem. Phys. 36 1990

[2] Mishima O, Era K, Tanaka J and Yamaoka S 1988 Appl.
Phys. Lett. 53 932

[3] Mosuang T E and Lowther J E 2002 Phys. Rev. B
66 014112

[4] Orellana W and Chacham H 1992 Appl. Phys. Lett.
74 984

[5] Orellana W and Chacham H 1999 Brazilian J. Phys.
29 801

[6] Orellana W and Chacham H 2000 Phys. Rev B 62
10135

[7] Orellana W and Chacham H 2001 Phys. Rev B 63
125205

[8] Matar S, Gonnet V and Demazeau G 1994 J. Phys.
(France) 4 335

[9] Widmayer P, Boyen H G, Ziemann P, Reinke P and Oelhafen P
1999 Phys. Rev. B 59 5233

[10]Kresse G and Joubert D 1999 Phys. Rev. B 59
1758

[11]Bl\"{ochl P E 1994 Phys. Rev. B 50 17953

[12]Kresse G and Hafner J 1993 Phys. Rev. B 47
R558

[13]Kresse G and Hafner J 1994 Phys. Rev. B 49
14251

[14]Kresse G and J. Furthm\"{uller 1996 Comput. Matter.
Sci. 6 15

[15]Kresse G and Furthm\"{uller J 1996 Phys. Rev. B
54 11169

[16]Monkhorst H J and Pack J D 1976 Phys. Rev. B
13 5188

[17] Zhang S B and Northrup J E 1991 Phys. Rev. Lett.
67 2339

[18]Laks D B et al 1992 Phys. Rev. B 45 10965

[19]P\"{oykk\"{o S, Puska M J and Nieminen R M 1996
Phys. Rev. B 53 3813

[20]Matsunaga K et al 2003 Phys. Rev. B 68 085110

[21] GorczycaI, Svane A and Christensen N E 1999 Phys.
Rev. B 60 8147

[22] Centoni S A et al 2005 Phys. Rev. B 72 195206

[23] Soma T, Sawaoka S and Saito S 1974 Mater. Res.
Bull. 9 755