固相反应法制备的CoxZn1-xO磁性能的研究

王锋; 王月燕; 黄伟伟; 张小婷; 李珊瑜

doi:10.7498/aps.61.157503

摘要

采用固相反应烧结法制备了Co掺杂ZnO的粉末和压片样品. XRD衍射表明样品中Co2+离子取代Zn2+离子进入了ZnO晶格中. 在室温下样品均表现为顺磁性, 利用密度泛函理论(DFT+U)方法计算得到的Co2Zn14O16体系反铁磁基态更稳定, 并通过Co, O原子电子迁移变化, 表明了CoZnO体系中磁性机理更倾向于Co2+O2-Co2+成键的间接交换作用模型. 改进了安德森模型中的直接交换积分Jpd公式. 提出两个可能的途径来实现具有本征铁磁性氧化物半导体.

关键词:

Abstract

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.

Keywords:

作者及机构信息

1.
泉州师范学院物理与信息工程学院, 泉州 362000

基金项目: 福建省自然科学基金(批准号: 2010J01305), 泉州市科技项目计划(批准号: 2009G8)和福建省高校服务海西建设重点项目(批准号: A100)资助的课题.

Authors and contacts

1.
Physics and Information Engineering School, Quanzhou Normal University, Quanzhou 362000, China

Funds: Project supported by the Natural Science Foundation of Fujian Province, China (Grant No. 2010J01305), the Science and Technology Program of Quanzhou, China (Grant No. 2009G8), and the University Service West Coast of Fujian Province, China (Grant No. A100).

参考文献

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[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]

施引文献

[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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