Effect of sintering temperature on structural,magnetic,dielectric and optical properties of Ni-Mn-Zn ferrites
作者机构：Industrial Physics DivisionBangladesh Council of Scientific and Industrial Research(BCSIR)Dhaka 1205Bangladesh Fiber and Polymer DivisionBangladesh Council of Scientific and Industrial Research(BCSIR)Dhaka 1205Bangladesh Atomic Energy Centre(AEC)Dhaka 1000Bangladesh
出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)
年 卷 期：2021年第11卷第6期
页 面：59-67页
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
主 题：Ferrites ceramic technique FTIR dielectric constant hysteresis curve bandgap
摘 要：Spinel ferrite Ni_(0.08)Mn_(0.90)Zn_(0.02)Fe_(2)O_(4)was prepared by a conventional ceramic process followed by sintering at three different temperatures(1050°C,1100°C and 1150°C).X-ray diffraction(XRD)investigations stated the single-phase cubic spinel structure and the FTIR spectra revealed two prominent bands within the wavenumber region from 600 cm^(−1)to 400 cm^(−1).Surface morphol-ogy showed highly crystalline grain development with sizes ranging from 0.27μm to 0.88μ*** magnetic hysteresis curve at ambient temperature revealed a significant effect of sintering temperature on both coercivity(Hc)and saturation magnetization(Ms).Temperature caused a decrease in DC electrical resistivity,while the electron transport increased,suggesting the semicon-ducting nature of all samples and that they well followed the Arrhenius law from which their activation energies were *** values of Curie temperature(Tc)and activation energy were influenced by the sintering ***-dependent dielectric behavior(100 Hz-1 MHz)was also analyzed,which may be interpreted by the Maxwell-Wagner-type *** UV-vis-NIR reflectance curve was analyzed to calculate the bandgap of ferrites,which showed a decreasing trend with increasing sintering temperature.
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