Chin. Phys. Lett.  2012, Vol. 29 Issue (10): 106103    DOI: 10.1088/0256-307X/29/10/106103
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Origin of Ferromagnetism in Al and Ni Co-doped ZnO Based DMS Materials
Murtaza Saleem1**, Saadat A. Siddiqi1,2, Shahid M. Ramay3, Shahid Atiq1, Shahzad Naseem1
1Centre for Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan
2Interdisciplinary Research Centre in Biomedical Materials, COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore, Pakistan
3Department of Chemical Engineering, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia
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Murtaza Saleem, Saadat A. Siddiqi, Shahid M. Ramay et al  2012 Chin. Phys. Lett. 29 106103
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Abstract Zn0.95Ni0.05O and Zn0.90Ni0.05Al0.05O compositions of nanocrystallites are synthesised using the well recognised auto-combustion technique. The x-ray diffraction patterns demonstrate the phase pure characteristic wurtzite-type crystal structure with space group P63mc in both the compositions. The elemental incorporation of Ni and Al contents into the ZnO structure is confirmed by energy dispersive x-ray analysis. The micrographs of scanning electron microscopy show an approximate ordered morphology. The electrical resistivity is observed to decrease with the rising temperature, depicting the characteristic semiconductor behaviour of the samples. The lower values of resistivity and ferromagnetic interactions in the Al-doped sample correspond to an increase of carrier's density. It is observed that the carrier mediated mechanism is mainly responsible for ferromagnetism in ZnO-based diluted magnetic semiconductors.
Received: 02 July 2012      Published: 01 October 2012
PACS:  61.46.Hk (Nanocrystals)  
  75.50.Pp (Magnetic semiconductors)  
  47.70.Pq (Flames; combustion)  
  75.75.-c (Magnetic properties of nanostructures)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/29/10/106103       OR      https://cpl.iphy.ac.cn/Y2012/V29/I10/106103
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Articles by authors
Murtaza Saleem
Saadat A. Siddiqi
Shahid M. Ramay
Shahid Atiq
Shahzad Naseem
[1] Huang G J, Wang J B, Zhong X L, Zhou G C and Yan H L 2007 J. Mater. Sci. 42 6464
[2] Yu Z, Ge S, Zuo Y, Wang G and Zhang F 2010 Appl. Surf. Sci. 256 5813
[3] Liu X C, Zhang H W, Zhang T, Chen B Y, Chen Z Z, Song L X and Shi E W 2008 Chin. Phys. B 17 1371
[4] Cheng C, Xu G, Zhang H and Luo Y 2008 Mater. Lett. 62 1617
[5] Joseph D P, Ayyappan S and Venkateswaran S 2006 J. Alloys Compd. 415 225
[6] Saleem M, Atiq S, Naseem S and Siddiqi S A 2012 J. Korean Phys. Soc. 60 1772
[7] Pei G, Xia C, Cao S, Zhang J, Wu F and Xu J 2006 J. Magn. Magn. Mater. 302 340
[8] Yang J H, Zhao L Y, Ding X, Yang L L, Zhang Y J, Wang Y X and Liu H L 2009 Mater. Sci. Eng. B 162 143
[9] Tong L N, He X M, Han H B, Hu J L, Xia A L and Tong Y 2010 Solid State Commun. 150 1112
[10] Saleem M, Siddiqi S A, Atiq S and Anwar M S 2011 Chin. Phys. Lett. 28 116103
[11] Ozgur U, Alivov Y I, Lui C, Teke A Reshchikov M A, Dogan S, Avrutin V, Cho S J and Morkoc H 2005 J. Appl. Phys. 98 041301
[12] Maldonado F and Stashans A 2010 J. Phys. Chem. Solids 71 784
[13] Pei G, Wu F, Xia C, Zhang J, Li X and Xu J 2008 Curr. Appl. Phys. 8 18
[14] Saleem M, Siddiqi S A, Atiq S, Anwar M S, Hussain I and Alam S 2011 Mater. Charact. 62 1102
[15] Kato C, Kuroda K and Hasegawa K 1979 Clay Miner. 14 13
[16] Saleem M, Siddiqi S A, Atiq S, Anwar M S and Riaz S 2010 Chin. J. Chem. Phys. 23 469
[17] Sharma V K, Xalxo R and Varma G D 2007 Cryst. Res. Technol. 42 34
[18] Wang D and Xiong S J 2008 Chin. Phys. Lett. 25 1102
[19] Priour D J, Hwang E H and Sarma S D 2004 Phys. Rev. Lett. 92 117201
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