[1] Gardos M N 2000 Tribol. Lett. 8 65
[2] Sun Y B, Zhang X Q, Li G K, Cheng Z H 2012 Chin. Phys. B 21 047503
[3] Gusev A, Avvakumov E G, Medvedev A, Masliy A 2007 Sci. Sinter. 39 51
[4] Kao W H, Patel P, Haberichter S L 1997 J. Electrochem Soc. 144 1907
[5] Andersson S, Magneli A 1956 Naturwiss 43 495
[6] Woydt M 2000 Tribol. Lett. 8 117
[7] Smith J R, Walshf C 1998 J. Appl. Electrochem. 28 1021
[8] Liborio L, Harrison N 2008 Phys. Rev. B 77 104104
[9] Halley J W, Michalewicz M T, Tit N 1990 Phys. Rev. B 41 10165
[10] Hou Q Y, Zhang Y, Chen Y, Shang J X, Gu J H 2008 Acta Phys. Sin. 57 438 (in Chinese) [侯清玉, 张跃, 陈粤, 尚家香, 谷景华 2008 物理学报 57 438]
[11] Guan D B, Mao J 2012 Acta Phys. Sin. 61 017102 (in Chinese) [管东波, 毛健 2012 物理学报 61 017102]
[12] Rumaiz A K, Ali B, Ceylan A, Boggs M, Beebe T, Shah S I 2007 Solid. State. Commun. 144 334
[13] Feng J, Xiao B, Zhou R, Pan W 2013 J. Appl. Phys. 113 143907
[14] Tsutomu U, Tetsuya Y, Hisayoshi I, Keisuke A 2002 J. Phys. Chem. Solids 63 1909
[15] Kafizas A, Parkin I P 2011 J. Am. Chem. Soc. 133 20458
[16] Sorescu M, Diamandescu L, Tarabsanu M D, Teodorescuv V S 2004 J. Mat. Sci. 39 675
[17] Tang H, Prasad K, Sanjinés R, Schmid P E, Lévy F 1994 J. Appl. Phys. 75 2042
[18] Serpone N 2006 J. Phys. Chem. B 110 24287
[19] Choi W, Termin A, Hoffmann M R 1994 J. Phys. Chem. 98 13669
[20] Hou Q Y, Wu Y G R L, Zhao C W 2013 Acta Phys. Sin. 62 237101 (in Chinese) [侯清玉, 乌云格日乐, 赵春旺 2013 物理学报 62 237101]
[21] Pickett W E, Moodera J S 2001 Phys. Today 54 39
[22] Hou Q Y, Zhao C W, Li J J, Wang G 2011Acta Phys. Sin. 60 047104 (in Chinese) [侯清玉, 赵春旺, 李继军, 王钢 2011 物理学报 60 047104]
[23] Jhm J, Zunger A, Cohen M L 1979 J. Phys. C 12 4409
[24] Xin J, Zheng Y Q, Shi E W 2007 J. Inorg. Mater 22 193 (in Chinese) [忻隽, 郑燕青, 施尔畏 2007 无机材料学报 22 193]
[25] Pournami P V, Marykutty T, George K C 2012 J. Appl. Phys. 112 104308