Abstract
Co and N co-doped ZnO nanopowders with Co and N concentration 4, 6, and 8 mol% were synthesized by sol–gel method. Powder X-ray diffraction reveals that Co and N co-doped ZnO crystallize in wurtzite structure having space group C 6v . Photo-luminescence studies show the reduction in band gap with increase in concentration of dopants. Micro Raman studies show the red shift for 1LO phonon peak with increase in doping, generally credited to the stress caused by lattice mismatch due to N doping in ZnO. X-ray absorption spectroscopy reveals that Co replaces the Zn atoms and N replace the O atoms in the host ZnO lattice. Magnetic studies show that Co and N co-doped ZnO nanopowders exhibit ferromagnetic character at room temperature.
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Wolf SA, Awschalom DD, Buhrman RA, Daughton JM, Molnar SV, Roukes ML, Chtchelkanova AY, Treger DM (2001) Science 294:1488
Furdyna JK (1988) J Appl Phys 64:R29
Ohno H (1998) Science 281:951
Dietl T, Ohno H, Matsukura F, Cibert J, Ferrand D (2000) Science 287:1019
Jeong SH, Kim BS, Lee BT (2003) Appl Phys Lett 82:2625
Pearton SJ, Abernathy CR, Overberg ME, Thaler GT, Norton DP, Theodoropoulou N, Hebard AF, Park YD, Ren F, Kim J, Boatner LA (2003) J Appl Phys 93:1
Sato K, Katayama-Yoshida H (2000) Jpn J Appl Phys 39:L555
Sato K, Katayama-Yoshida H (2001) Jpn J Appl Phys 40:L334
Ueda K, Tabata H, Kawai T (2001) Appl Phys Lett 79:988
Prellier W, Fouchet A, Mercey B, Simon Ch, Raveau B (2003) Appl Phys Lett 82:3490
Kim JH, Kim H, Kim D, Ihm YM, Choo WK (2003) Phys B 327:304
Norton DP, Overberg ME, Pearton SJ, Pruessner K, Budai JD, Boatner LA, Chisholm MF, Lee JS, Khim JG, Park YD, Wilson RG (2003) Appl Phys Lett 83:5488
Spaldin NA (2004) Phys Rev B 69:125201
Matsui H, Saeki H, Kawai T, Tabata H, Mizobuchi B (2004) J Appl Phys 95:5882
Ma JG, Liu YC, Mu R, Zhang JY, Lu YM, Shen DZ, Fan XW (2004) J Vac Sci Technol B 22:94
Yuldashev SU, Igamberdiev KT, Kang TW, Pelenovich WO, Shashkov AG (2008) Appl Phys Lett 93:092503
Wang Q, Sun Q, Jena P, Kawazoe Y (2004) Phys Rev B 70:052408
Assadi MHN, Zhang YB, Li S (2009) J Phys 21:185503
Assadi MHN, Zhang YB, Li S (2009) J Appl Phys 105:043906
Liu SM, Gu SL, Ye JD, Zhu SM, Liu W, Tang K, Shan ZP, Zhang R, Zheng YD, Sun XW (2008) Appl Phys A 91:535
Lu ZL, Mo ZR, Zou WQ, Wang S, Yan GQ, Liu XC, Lin YB, Xu JP, Lv LY, Wu XM, Xia ZH, Xu MX, Zhang FM, Du YW (2008) J Phys D 41:115008
Xu HY, Liu YC, Xu CS, Liu YX, Shao CL, Mu R (2006) Appl Phys Lett 88:242502
Yan W, Sun Z, Liu Q, Li Z, Shi T, Wang F, Qi Z, Zhang G, Wei S, Zhang H, Chen Z (2007) Appl Phys Lett 90:242509
Lee Y, Lee JC, Su CW (2010) IEEE Trans Magn 46:1565
Futsuhara M, Yoshioka K, Takai O (1988) Thin Solid Films 317:322
Liu XJ, Song C, Zeng F, Pan F (2008) Thin Solid Films 516:8757
Yoo YZ, Fukumura T, Jin Z, Hasegawa K, Kawasaki M, Ahmet P, Chikyow T, Koinuma H (2001) J Appl Phys 90:4246
Thakur P, Chae KH, Kim JY, Subramanian M, Jayavel R, Asokan K (2007) Appl Phys Lett 91:162503
Lee EYM, Tran N, Russell J, Lamp RN (2002) J Appl Phys 92:2996
Munekata H, Abe T, Koshihara S, Oiwa A, Hirasawa M, Katsumoto S, Iye Y, Urano C, Takagi H (1997) J Appl Phys 81:4862
Koshihara S, Oiwa A, Hirasawa M, Katsumoto S, Iye Y, Urano C, Takagi H, Munekata H (1997) Phys Rev Lett 78:4617
Yang LW, Wu XL, Qiu T, Siu GG, Chu PK (2006) J Appl Phys 99:074303
Acknowledgements
This research was supported by Academia Sinica and National Science Council, Taiwan, Republic of China, under the Grant number NSC98-2811-M-001-106. One of the authors, Sanjeev Kumar, is also thankful to IOP, Academia Sinica, Taipei for financial support.
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Kumar, S., Chen, C.L., Dong, C.L. et al. Structural, optical, and magnetic characterization of Co and N co-doped ZnO nanopowders. J Mater Sci 48, 2618–2623 (2013). https://doi.org/10.1007/s10853-012-7055-1
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DOI: https://doi.org/10.1007/s10853-012-7055-1