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Evaluation of structural, electrical and magnetic properties of nanosized unary, binary and ternary particles of Fe_3O_4, SnO_2 and TiO_2

机译：评价结构,电和磁纳米尺度的一元、二元和三元粒子Fe_3O_4, SnO_2和钛

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摘要

In the present study, unary, binary and ternary nanoparticles (NPs) of Fe_3O_4, TiO_2 and SnO_2 were synthesized using microemulsion assisted precipitation method. For characterization we have used the X-ray diffraction (XRD), Transmittance electron microscopy (TEM), Energy dispersive X-ray (EDX), UV–Visible and Fourier transform infrared (FTIR) spectroscopy. The measured electrical properties were used to determine the resistance and conduction processes. Two-point probe method was applied for measuring the DC electrical resistivity between 303–723 K, while the vibrating sample magnetometer (VSM) was used to measure the magnetic properties. The band gap study reveals that a low band gap of Fe_3O_4 compared to other nanoparticles suggests that it is more reactive than the TiO_2 and SnO_2 investigated in this study. It was observed that the electrical resistivity decreased with an increase in the temperature, indicated the increase in drift mobility. The activation energy value of ternary nanocomposites (TNC) was found higher than the corresponding unary NPs and binary nanocomposites. As far as the magnetic properties are concerned, Fe_3O_4 NPs were ferrimagnetic while the others have shown paramagnetic behavior under the applied magnetic field.
机译：在目前的研究中,一元、二元和三元纳米颗粒(NPs) Fe_3O_4,钛和SnO_2使用微乳液合成的协助吗沉淀的方法。用x射线衍射(XRD),透射电子显微镜(TEM)、能源色散x射线(EDX)、紫外可见和傅里叶变换红外(FTIR)光谱。被用来测量电属性确定阻力和传导流程。之间的直流电阻率测量303 - 723 K,而振动样品磁强计(VSM)被用来测量磁性。低带隙的Fe_3O_4相比纳米颗粒表明它更活泼比钛和SnO_2调查研究。与增加电阻率降低温度漂移的增加流动性。纳米复合材料(TNC)高于被发现相应的一元NPs和二进制纳米复合材料。而言,Fe_3O_4 NPs亚铁磁性吗而其他人则显示顺行为在应用磁场。

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