ABSTRACT

Sn-substituted Mg–Zn ferrites (0 ≤ x ≤ 0.10) have been synthesized using conventional ceramic technique and the mechanical, optical and high-temperature magnetic properties were studied. The formalism of elastic constants was assessed based on FTIR data. The mechanical stability was confirmed from the obtained values of stiffness constants. The bulk modulus, shear modulus and Young’s modulus have been estimated for different Sn concentrations. The Poisson’s ratio and Pugh ratio confirmed the brittleness character of the studied compounds. The Debye temperature was also calculated. The optical band gap has been calculated from diffuse reflectance spectra. The magnetization curves measured at different temperatures revealed the significant effect of temperature on the magnetic properties of the considered compositions. A second-order phase transition of ferrimagnetic to paramagnetic phase was observed in temperature-dependent magnetization vs. applied field and magnetic moment curves. The Curie temperature was observed to decrease owing to Sn substitution.

摘要

锡取代的Mg-Zn铁氧体（  0≤x ≤0.10）已使用常规陶瓷技术合成，并研究了机械，光学和高温磁性。弹性常数的形式主义是根据FTIR数据评估的。根据所获得的刚度常数值来确认机械稳定性。已经针对不同的Sn浓度估计了体积模量，剪切模量和杨氏模量。泊松比和普格比证实了所研究化合物的脆性。还计算了德拜温度。光学带隙是根据漫反射光谱计算得出的。在不同温度下测得的磁化曲线揭示了温度对所考虑的组合物的磁性能的显着影响。在与温度相关的磁化强度与施加磁场和磁矩曲线的关系中，观察到亚铁磁性相向顺磁性相的二阶相变。观察到居里温度由于锡取代而降低。