Volume 14, Issue 4 (Iranian Journal of Physics Research,Winter 2015)                   IJPR 2015, 14(4): 305-316 | Back to browse issues page

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Zargar Shoushtari M, Ranjbar F, Mousavi Ghahfarokhi S. Effect of calcination temperature and time on the structural and electrical properties of SrFe12O19 nanoparticles . IJPR. 2015; 14 (4) :305-316
URL: http://ijpr.iut.ac.ir/article-1-1718-en.html
Department of Physics, Shahid Chamran University of Ahvaz, Ahvaz, Iran , Zargar@scu.ac.ir
Abstract:   (6433 Views)
In this paper, nanoparticles of strontium hexaferrite (SrFe12O19) were synthesized via sol–gel technique. For preparation of the SrFe12O19 nanoparticles, the nitrates of the metal with a specified ratio of molar and citric acid were used. By using the thermogravimetric analysis (DTA/TGA) the final product was studied. On the basis of this analysis, the samples at different temperatures from 600°C to 1100 °C and calcination time from 0.5 h to 3 h were synthesized. The effect of calcination temperature with different times on the structural and electrical properties was studied. The structural and morphology of the samples were investigated by the X- ray diffraction (XRD), Fourier transform infrared spectroscopy (FT- IR) and scanning electron microscopy (SEM). Also, the DC resistivity of the samples was measured by four-probe method. The results of XRD revealed that the optimum temperature and calcination time of the single-phase SrFe12O19 nanoparticles were 1000°C and 2h, respectively. The results of the electrical properties at room temperature showed that the DC resistivity of the samples decreased by increasing the calcination temperature
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Type of Study: Research | Subject: General

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