Gd doping induced weak ferromagnetic ordering in ZnS nanoparticles synthesized by low temperature co-precipitation technique

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题名:	Gd doping induced weak ferromagnetic ordering in ZnS nanoparticles synthesized by low temperature co-precipitation technique
作者:	P. Kaur, S. Kumar, C. L. Chen, K. S. Yang, D. H. Wei, C. L. Dong, C. Srivastave. S. M. Rao
关键词:	Nanoparticles;X-ray diffraction;Photoluminescence;X-ray absorption near-edge structure (XANES);Weak ferromagnetism
日期:	2016-09
上传时间:	2017-10-25 02:11:02 (UTC+8)
摘要:	Zn1−xGdxS nanoparticles with Gd concentration x = 0.00, 0.02 and 0.04 were synthesized by the chemical co-precipitation technique using thioglycerol as capping agent. X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence (PL) spectroscopy, X-ray absorption near-edge structure (XANES) and vibrating sample magnetometer (VSM) were employed to characterize the as synthesized Gd doped ZnS nanoparticles. XRD and TEM studies show the formation of cubic ZnS nanoparticles with an average size in the range 5–10 nm. The doping did not alter the phase of the ZnS. The PL spectra of doped ZnS nanoparticles showed the presence of sulphur vacancies in the lattice. XANES of Gd doped ZnS nanoparticles depicts spectral changes may arise from charge transfer between host Zn and dopant Gd ions. A VSM study shows that the weak ferromagnetic behaviour increases with increase in Gd doping ZnS nanoparticles.
關聯:	Materials Chemistry and Physics 186, p.124-130
DOI:	10.1016/j.matchemphys.2016.10.037
显示于类别:	[物理學系暨研究所] 期刊論文

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