[1] Tromp H J, van Gelderen P, Kelly P J, Brocks G and Bobbert
P A 2001 Phys. Rev. Lett. 87 016401

[2] Xu T T, Zheng J G, Nicholls A W, Stankovich S, Piner R D
and Ruoff R S 2004 Nano. Lett. 4 2051

[3] Young D P, Hall D, Torelli M E, Fisk Z, Sarrao J L,
Thompson J D, Ott H R, Oseroff S B, Goodrich R G and Zysler R 1999
Nature 397 412

[4] Komatsubara T, Sato N, Kunii S, Oguro I, Furukawa Y, Onuki
Y and Kasuya T 1983 J. Magn. Magn. Mater. 31-34 368

[5] Shang S L, Wang Y and Liu Z K 2007 Phys. Rev. B
75 024302

[6] Peysson Y, Daudin B, Dubus M and Benenson R E 1986
Phys. Rev. B 34 8367

[7] Lemmens P, Ewert S, Thalmeier P, Lenz D and Winzer K 1989
Zeit. Phys. B 76 501

[8] Barzykin V and Gor'kov L P 2000 Phys. Rev. Lett.
84 2207

[9] Monnier R and Delley B 2004 Phys. Rev. B 70
193403

[10] Hossain F M, Riley D P and Murch G E 2005 Phys.
Rev. B 72 235101

[11] Segall M D, Lindan Philip J D, Probert M J, Pickard C J,
Hasnip P J, Clark S J and Payne M C 2002 J. Phys.: Condens.
Matter 14 2717

[12] Hammer B, Hansen L B and N{\orskov J K 1999 Phys.
Rev. B 59 7413

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

[14] Blanco M A, Francisco E and Lua\v{na V 2004 Comp.
Phys. Commun. 158 57

[15] Baranovskiy A E, Grechnev G E, Fil V D, Ignatova T V,
Logosha A V, Panfilov A S, Svechkarev I V, Shitsevalova N Y,
Filippov V B and Eriksson O 2007 J. Alloy Compd. 442 228

[16] Zherlitsyn S, Wolf B, Luthi B, Lang M, Hinze P, Uhrig E,
Assmus W, Ott H R, Young D P and Fisk Z 2001 Euro. Phys. J. B
22 327

[17] Chen C H, Aizawa T, Iyi N, Sato A and Otani S 2004
J. Alloy Compd. 366 L6

[18] Craciun V and Craciun D 2005 Appl. Surf. Sci.
247 384

[19] Koval'chenko M S, Ogorodnikov V V and Krainii A G 2005
Atomic Energy 21 1168

[20] Ordan'yan S S, Paderno Y B, Nikolaeva E E and
Khoroshilova I K 2004 Powder Metal. Met. Ceram. 23 387

[21] Mandrus D, Sales B C and Jin R 2001 Phys. Rev. B
64 012302

[22] Tanaka T 1974 J. Phys. C: Solid State Phys. 7
L177