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Co doped ZnO powders and tablets are synthesized by the solid-state reaction. The X-ray diffraction experimental results indicate that Zn2+ ions are substituted by Co2+ ions. All samples are paramagnetic at room temperature. Using density functional theory (DFT+U) method, the calculated results indicate that the antiferromagnetic ground state of Co2Zn14O16 system is more stable. By calculating the electronic transfers of Co and O atoms, it is indicated that the mechanism of the magnetism tends to the indirect exchange model of Co2+O2-Co2+ bonding in CoZnO system. The direct exchange formula Jpd of Anderson model is modified. Two possible ways to achieve the intrinsic ferromagnetic oxide semiconductor are putted forward.
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Keywords:
- CoZnO /
- solid state reaction /
- paramagnetism /
- indirect exchange
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[3] Coey J M D, Venkatesan M, Fitezgerald C B 2005 Nat. Mater. 4 173
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[13] Liu G L, Cao Q, Deng J X, Xing P F, Tian Y F, Chen Y X, Yan S S, Mei L M 2007 Appl. Phys. Lett. 90 052504
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[18] Hu Sh J, Yan Sh Sh, Zhao M W, Liang M M 2006 Phys. Rev. B 73 245205
[19] Wu Q Y, Chen Z G, Wu R, Xu G G, Huang Z G, Zhang F M, Du Y W 2007 Solid State Comm. 142 242
[20] Xu Y N, Ching W Y 1993 Phys. Rev. B 48 4335
[21] David R L 2010 Handbook of Chemical and Physics (90th Edition) (Boca Raton: CRC Press Inc)
[22] Sati P, Deparis C, Morhain C, Schafer S, Stepanov A 2007 Phys. Rev. Lett. 98 137204
[23] Jiang S T, Li W 2003 Magnetism in Condemed Matter Physics (Beijing: Science press) p70 (in Chinese) [姜寿亭, 李卫 2003 凝聚态磁性物理 (北京: 科学出版社) 第70页]
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[27] Chen Sh, Wu Q Y, Chen Zh G, Xu G G, Huang Zh G 2009 Acta Phys. Sin. 58 2011 (in Chinese) [陈珊, 吴青云, 陈志高, 许桂贵, 黄志高 2009 物理学报 58 2011]
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[34] Kobayashi M, Ishida Y, Hwang J I, Mizokawa T, Fujimori A, Mamiya K, Okamoto J, Takeda Y, Okane T, Saitoh Y, Muramatsu Y, Tanaka A, Saeki H, Tabata H and Kawai T 2005 Phys. Rev. B 72 201201(R)
[35] Wu W Q, Shi T F, Zhang G B, Fu Y B, Pan Zh Y, Sun Zh H, Yan W Sh, Xu P Sh, Wei Sh Q 2008 Acta Phys. Sin. 57 4328 (in Chinese) [吴文清, 史同飞, 张国斌, 符义兵, 潘志云, 孙治湖, 闫文盛, 许彭寿, 韦世强 2008 物理学报 57 4328]
[36] Weng Zh Zh, Zhang J M, Huang Zh G, Lin W X 2011 Chin. Phys. B 20 027103
[37] Lu Zh L, Zou W Q, Xu M X, Zhang F M 2010 Chin. Phys. B 19 056101
[38] Qi N, Wang Y W, Wang D, Wang D D, Chen Zh Q 2011 Acta Phys. Sin. 60 107805 (in Chinese) [祁宁, 王元为, 王栋, 王丹丹, 陈志权 2011 物理学报 60 107805]
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[1] Dietal T, Ohno H, Matsukura F, Cibert J, Ferrand D 2000 Science 287 1019
[2] Ueda K J, Tebata H S, Kawai T 2001 Appl. Phys. Lett. 79 988
[3] Coey J M D, Venkatesan M, Fitezgerald C B 2005 Nat. Mater. 4 173
[4] Sato K, Yoshida H K 2001 Jpn. J. Appl. Phys. 40 L651
[5] Han T, Meng F Y, Zhang S, Cheng X M, Oh J I 2011 J. Appl. Phys. 110 063724
[6] Park J H.Kim M G, Jang H M, Ryu S, Kim Y M 2004 Appl.Phys.Lett. 84 1338
[7] Yang J J, Fang Q Q, Wang B M, Wang C P, Zhou J, Li Y, Liu Y M, Lu Q R 2007 Acta Phys. Sin. 56 1116 (in Chinese) [杨景景, 方庆清, 王保明, 王翠平, 周军, 李雁, 刘艳美, 吕庆荣 2007 物理学报 56 1116]
[8] Wang Y, Sun L, Han D D, Liu L F, Kang J F, Liu X Y, Zhang X, Han R Q 2006 Acta Phys. Sin. 55 6651 (in Chinese) [王漪, 孙雷, 韩德栋, 刘力锋, 康晋锋, 刘晓彦, 张兴, 韩汝琦 2006 物理学报 55 6651]
[9] Liu X C, Shi E W, Song L X, Zhang H W, Cheng Zh Zh 2006 Acta Phys. Sin. 55 2557 (in Chinese) [刘学超, 施尔畏, 宋力昕, 张华伟, 陈之战 2006 物理学报 55 2557]
[10] Hsu H S, Huang J C A, Chen E, Liu C E 2007 Appl. Phys. Lett. 90 102506
[11] Kim J H, Kim Hyo J, Kim D J, Ihm Y E, Choo W K 2002 J. Appl. Phys. 92 6066
[12] Neal J R, Behan A J R, Ibrahim M, Blythe H J, Ziese M, Fox A M, Gehring G A 2006 Phys. Rev. Lett. 96 197208
[13] Liu G L, Cao Q, Deng J X, Xing P F, Tian Y F, Chen Y X, Yan S S, Mei L M 2007 Appl. Phys. Lett. 90 052504
[14] Blasco J, Bartolome F, Garcia L M, Garcia J 2006 J. Mater. Chem. 16 2282
[15] Liu E Z, Jiang J Z 2010 J. Appl. Phys. 107 023909
[16] Cheng X W, Li X, Gao Y L, Yu Zh, Long X, Liu Y 2009 Acta Phys. Sin. 58 2018 (in Chinese) [程兴旺, 李祥, 高院玲, 于宙, 龙雪, 刘颖 2009 物理学报 58 2018]
[17] Chanier T, Sargolzaei M, Opahle I, Hayn R, Koepernik K 2006 Phys. Rev. B 73 134418
[18] Hu Sh J, Yan Sh Sh, Zhao M W, Liang M M 2006 Phys. Rev. B 73 245205
[19] Wu Q Y, Chen Z G, Wu R, Xu G G, Huang Z G, Zhang F M, Du Y W 2007 Solid State Comm. 142 242
[20] Xu Y N, Ching W Y 1993 Phys. Rev. B 48 4335
[21] David R L 2010 Handbook of Chemical and Physics (90th Edition) (Boca Raton: CRC Press Inc)
[22] Sati P, Deparis C, Morhain C, Schafer S, Stepanov A 2007 Phys. Rev. Lett. 98 137204
[23] Jiang S T, Li W 2003 Magnetism in Condemed Matter Physics (Beijing: Science press) p70 (in Chinese) [姜寿亭, 李卫 2003 凝聚态磁性物理 (北京: 科学出版社) 第70页]
[24] Yin S, Xu M X, Yang L, Liu J F, Rosner H, Hahn H, Gleier H, Schild D, Doyle S, Liu T, Hu T D, Muromachi E T, Jiang J Z 2006 Phys. Rev. B 73 224408
[25] Sheetz R M, Ponomareva I, Richter E, Andriotisa N, Menon M 2009 Phys. Rev. B 80 195314
[26] Pan H, Feng Y P, Wu Q Y, Huang Zh G, Lin J Y 2008 Phy. Rev. B 77 125211
[27] Chen Sh, Wu Q Y, Chen Zh G, Xu G G, Huang Zh G 2009 Acta Phys. Sin. 58 2011 (in Chinese) [陈珊, 吴青云, 陈志高, 许桂贵, 黄志高 2009 物理学报 58 2011]
[28] Anderson P W 1950 Phys. Rev. 79 350
[29] Anderson P W 1950 Phys. Rev. 79 705
[30] Stoner E C 1936 Proc. Roy. Soc. A154 656
[31] Hubbard J 1963 Proc. Roy. Soc. A276 238
[32] Lee E C. and Chang K J 2004 Phys. Rev. B 69 85205
[33] Wi S C, Kang J S, Kim J H, Cho B J, Yoon S, Suh B J, Han S W, Kim K H, Kim K J, Kim K H, Kim K J, Kim B S, Song H J, Shin H J 2004 Appl. Phys. Lett. 84 4233
[34] Kobayashi M, Ishida Y, Hwang J I, Mizokawa T, Fujimori A, Mamiya K, Okamoto J, Takeda Y, Okane T, Saitoh Y, Muramatsu Y, Tanaka A, Saeki H, Tabata H and Kawai T 2005 Phys. Rev. B 72 201201(R)
[35] Wu W Q, Shi T F, Zhang G B, Fu Y B, Pan Zh Y, Sun Zh H, Yan W Sh, Xu P Sh, Wei Sh Q 2008 Acta Phys. Sin. 57 4328 (in Chinese) [吴文清, 史同飞, 张国斌, 符义兵, 潘志云, 孙治湖, 闫文盛, 许彭寿, 韦世强 2008 物理学报 57 4328]
[36] Weng Zh Zh, Zhang J M, Huang Zh G, Lin W X 2011 Chin. Phys. B 20 027103
[37] Lu Zh L, Zou W Q, Xu M X, Zhang F M 2010 Chin. Phys. B 19 056101
[38] Qi N, Wang Y W, Wang D, Wang D D, Chen Zh Q 2011 Acta Phys. Sin. 60 107805 (in Chinese) [祁宁, 王元为, 王栋, 王丹丹, 陈志权 2011 物理学报 60 107805]
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