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Magnetic quantum-dot cellular automata (MQCA) corner structure consists of both ferromagnetic coupling and anti-ferromagnetic coupling. Signal propagation of corner structure for magnetic material Fe is theoretically investigated by applying an external clocking field method. Magnetization evolution image on signal propagation of the corner is presented by micromagnetic simulation; it is shown that Fe nanomagnets can ensure stable switching of corner including two kinds of lengthy coupling. The proposed corner structure is then fabricated by electron beam lithography, thermal evaporation and lift-off technologies. Scanning electron microscopy and magnetic force microscopy measurement results demonstrate perfect pattern and correct signal propagation of two types of coupling.
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Keywords:
- magnetic quantum-dot cellular automata /
- corner /
- magnetization /
- magnetic force microscopy
[1] Xiao Q J, Yang T Y, Ursache A, Tuominen M T 2008 J. Appl. Phys. 103 07C521
[2] Wood R, Williams M, Kavcic A, Miles J 2009 IEEE Trans. Magn. 45 917
[3] Zhang S Q, Chen Z D 2008 Chin. Phys. B 17 1436
[4] Nahas J J, Andre T W, Garni B, Subramanian C, Lin H, Alam S M, Papworth K, Martino W L 2008 IEEE J. Solid-State Circuits 43 1826
[5] Cowburn R P, Welland M E 2000 Science 287 1466
[6] Imre A, Csaba G, Ji L L, Bernstein G H, Porod W 2006 Science 311 205
[7] Mitic M, Cassidy M, Petersson K, Starrett R, Gauja E, Brenner R, Clark R, Dzurak A, Yang C, Jamieson D 2006 Appl. Phys. Lett. 89 013503
[8] Orlov A O, Imre A, Csaba G, Ji L L, Porod W, Bernstein G H 2008 J. Nanoelectron. Optoelectron. 3 1
[9] Varga E, Orlov A O, Niemier M T, Hu X S, Bernstein G H, Porod W 2010 IEEE Trans. Nanotechnol. 9 668
[10] Niemier M, Dingler A, Sharon H X 2008 Proceedings of 26th IEEE International Conference on Computer Design 506
[11] Yang X K, Cai L, Kang Q, Bai P, Zhao X H, Feng C W, Zhang L S 2011 Acta. Phys. Sin. 60 098503 (in Chinese) [杨晓阔, 蔡理, 康强, 柏鹏, 赵晓辉, 冯朝文, 张立森 2011 60 098503]
[12] Donahue M J, Porter D G 1999 OOMMF user's Guide, http: //math.nist.gov/oommf.
[13] Dao N, Homer S R, Whittenburg S L 1999 J. Appl. Phys. 86 3262
[14] Yang X K, Cai L, Wang J H, Huang H T, Zhao X H, Li Z C, Liu B J 2012 Acta. Phys. Sin. 61 047502 (in Chinese) [杨晓阔, 蔡理, 王久洪, 黄宏图, 赵晓辉, 李政操, 刘保军 2012 61 047502]
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[1] Xiao Q J, Yang T Y, Ursache A, Tuominen M T 2008 J. Appl. Phys. 103 07C521
[2] Wood R, Williams M, Kavcic A, Miles J 2009 IEEE Trans. Magn. 45 917
[3] Zhang S Q, Chen Z D 2008 Chin. Phys. B 17 1436
[4] Nahas J J, Andre T W, Garni B, Subramanian C, Lin H, Alam S M, Papworth K, Martino W L 2008 IEEE J. Solid-State Circuits 43 1826
[5] Cowburn R P, Welland M E 2000 Science 287 1466
[6] Imre A, Csaba G, Ji L L, Bernstein G H, Porod W 2006 Science 311 205
[7] Mitic M, Cassidy M, Petersson K, Starrett R, Gauja E, Brenner R, Clark R, Dzurak A, Yang C, Jamieson D 2006 Appl. Phys. Lett. 89 013503
[8] Orlov A O, Imre A, Csaba G, Ji L L, Porod W, Bernstein G H 2008 J. Nanoelectron. Optoelectron. 3 1
[9] Varga E, Orlov A O, Niemier M T, Hu X S, Bernstein G H, Porod W 2010 IEEE Trans. Nanotechnol. 9 668
[10] Niemier M, Dingler A, Sharon H X 2008 Proceedings of 26th IEEE International Conference on Computer Design 506
[11] Yang X K, Cai L, Kang Q, Bai P, Zhao X H, Feng C W, Zhang L S 2011 Acta. Phys. Sin. 60 098503 (in Chinese) [杨晓阔, 蔡理, 康强, 柏鹏, 赵晓辉, 冯朝文, 张立森 2011 60 098503]
[12] Donahue M J, Porter D G 1999 OOMMF user's Guide, http: //math.nist.gov/oommf.
[13] Dao N, Homer S R, Whittenburg S L 1999 J. Appl. Phys. 86 3262
[14] Yang X K, Cai L, Wang J H, Huang H T, Zhao X H, Li Z C, Liu B J 2012 Acta. Phys. Sin. 61 047502 (in Chinese) [杨晓阔, 蔡理, 王久洪, 黄宏图, 赵晓辉, 李政操, 刘保军 2012 61 047502]
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