Insight into the origin of ferromagnetism in Fe-doped ZnO diluted magnetic semiconductor nanocrystals: an EXFAS study of local structure
作者： Shiv Kumar , Nidhi Tiwari , S. N. Jha , S. Chatterjee , D. Bhattacharyya
DOI: 10.1039/C5RA12828E
关键词: Extended X-ray absorption fine structure 、 High-resolution transmission electron microscopy 、 XANES 、 Rietveld refinement 、 Crystallite 、 Materials science 、 Ferromagnetism 、 Magnetic semiconductor 、 Magnetization 、 Condensed matter physics
摘要: In this paper we have studied the structural, local structural and magnetic properties of sol–gel derived Zn1−xFexO (0 ≤ x 0.06) nanoparticles. The crystalline structure crystallite size been estimated by X-ray diffraction with Rietveld refinement high-resolution transmission electron microscopy (HRTEM). Other extended absorption fine (EXAFS)-, near edge (XANES)- Raman-analysis. Weak ferromagnetism is observed at room temperature magnetization increases increasing Fe-concentration. oxygen vacancy assisted bound polarons (BMPs) possibly grain boundaries are responsible for ferromagnetism. Variation resistivity has also studied. Appearance in ZnO:Fe nanoparticles may open potential bio-imaging drug-delivery applications.
rsc.org
sci-hub.se 参考文章(65)
Ümit Özgür, Hadis Morkoç, Zinc Oxide: Fundamentals, Materials and Device Technology ,(2009)
John Bannister Goodenough, Magnetism and the chemical bond ,(1963)
Y. Ohno, D. K. Young, B. Beschoten, F. Matsukura, H. Ohno, D. D. Awschalom, Electrical spin injection in a ferromagnetic semiconductor heterostructure Nature. ,vol. 402, pp. 790- 792 ,(1999) , 10.1038/45509
Xuefeng Wang, Jianbin Xu, Xiaojiang Yu, Kun Xue, Jiaguo Yu, Xiujian Zhao, Structural evidence of secondary phase segregation from the Raman vibrational modes in Zn1−xCoxO (0<x<0.6) Applied Physics Letters. ,vol. 91, pp. 031908- ,(2007) , 10.1063/1.2759272
N. Sharma, S. Granville, S. C. Kashyap, J.-Ph. Ansermet, Low-temperature hopping and absence of spin-dependent transport in single crystals of cobalt-doped ZnO Physical Review B. ,vol. 82, ,(2010) , 10.1103/PHYSREVB.82.125211
T Tamura, H Ozaki, The relationship of the magnetic properties of M (M = Mn, Fe, Co)-doped ZnO single crystals and their electronic structures. Journal of Physics: Condensed Matter. ,vol. 21, pp. 026009- ,(2009) , 10.1088/0953-8984/21/2/026009
D. G. Mead, G. R. Wilkinson, The temperature dependence of the raman effect in some wurtzite type crystals Journal of Raman Spectroscopy. ,vol. 6, pp. 123- 129 ,(1977) , 10.1002/JRS.1250060305
Rosari Saleh, Suhendro Purbo Prakoso, Adel Fishli, The influence of Fe doping on the structural, magnetic and optical properties of nanocrystalline ZnO particles Journal of Magnetism and Magnetic Materials. ,vol. 324, pp. 665- 670 ,(2012) , 10.1016/J.JMMM.2011.07.059
Ü Özgür, Ya I Alivov, Chunli Liu, A Teke, MA Reshchikov, S Doğan, V Avrutin, S-J Cho, H Morkoc, None, A comprehensive review of ZnO materials and devices Journal of Applied Physics. ,vol. 98, pp. 041301- ,(2005) , 10.1063/1.1992666
SA Wolf, DD Awschalom, RA Buhrman, JM Daughton, von S von Molnár, ML Roukes, A Yu Chtchelkanova, DM Treger, Spintronics: A Spin-Based Electronics Vision for the Future Science. ,vol. 294, pp. 1488- 1495 ,(2001) , 10.1126/SCIENCE.1065389