Abstract

Copper ferrite/copper oxide (CuFe₂O₄/CuO) nanocomposites contents were prepared by using co-precipitation and sol-gel methods. The alternating current impedance and permittivity parameters of the samples were obtained by an impedance analyzer between 10 Hz and 40 MHz. The temperature dependences of magnetization were measured in zero-field-cooled (ZFC) and field-cooled (FC) modes and hysteresis curves at 300 K were investigated. In this context, it has been determined that the 25% CuO doped copper ferrite nanomaterial was showed the reduced dielectric loss and super-capacitive ability for ultra-capacitor application at high frequencies. Additionally, the samples prepared in this work were exhibited a superparamagnetic behavior.

摘要

采用共沉淀法和溶胶-凝胶法制备了铁酸铜/氧化铜（CuFe ₂ O ₄ / CuO）纳米复合材料。样品的交流阻抗和介电常数参数是通过阻抗分析仪在10 Hz至40 MHz之间获得的。在零场冷却（ZFC）和场冷却（FC）模式下测量了磁化强度的温度依赖性，并研究了300 K时的磁滞曲线。在此背景下，已经确定，在高频下，对于超级电容器应用，显示了25％掺杂CuO的铜铁氧体纳米材料具有降低的介电损耗和超电容能力。另外，在这项工作中制备的样品表现出超顺磁性行为。