Effects of bismuth on structural and dielectric properties of cobalt-cadmium spinel ferrites fabricated via micro-emulsion route

作     者：Furhaj Ahmed Sheikh Muhammad Khalid Muhammad Shahzad Shifa H M Noor ul Huda Khan Asghar Sameen Aslam Ayesha Perveen Jalil ur Rehman Muhammad Azhar Khan Zaheer Abbas Gilani 

作者机构：Department of PhysicsBalochistan University of Information TechnologyEngineering & Management SciencesQuetta 87300Pakistan Department of PhysicsGovernment College UniversityFaisalabad 38000Pakistan Department of PhysicsThe Islamia University of Bahawalpur 63100Pakistan 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2019年第28卷第8期

页      面：408-416页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：the ORIC of Balochistan University of Information Technology Engineering and Management Sciences (BUITEMS) Quetta-PK  for help and financial support to accomplish this research work in the Department of Physics 

主　　题：Co-ferrite nanocrystalline ferrites XRD microemulsion dielectric properties 

摘      要：Spinel ferrites have a significant role in high-tech *** the present work nano-crystalline ferrites having general formula Co0.5Cd0.5BixFe2-xO4 with(x=0.0,0.05,0.1,0.15,0.2,and 0.25)are synthesized via micro-emulsion *** x-ray diffraction(XRD)studies discover the FCC spinel *** size is calculated in a range of 11 nm-15 *** parameter calculations are reduced due to its substitution which leads to the exchange of large ionic radius of Fe^3+for small ionic radius of Bi^3+.The x-ray density is analyzed to increase with *** transform infrared spectroscopy(FTIR)is performed to analyze absorption band *** two absorption bands are observed in a range of 400 cm^-1-600 cm^-1,and they are the characteristic feature of spinel ***-gravimetric analysis(TGA)reveals the total weight loss of nearly 1.98%.Dielectric analysis is carried out by impedance analyzer in a frequency span from 1 MHz to 3 GHz by using the Maxwell Wagner *** studies reveal the decrease of dielectric *** alternating current(AC)conductivity exhibits a plane behavior in a low frequency range and it increases with the applied frequency *** is attributed to the grain effects in a high frequency range or may be due to the reduction of *** and imaginary part of impedance show the decreasing trend which corresponds to the grain boundary *** imaginary modulus shows the occurrence of peak that helps to understand the interfacial ***-Cole graph shows a single semicircle which confirms that the conduction mechanism is due to the grain boundaries at low *** studies reveal the applicability of these ferrites in high frequency equipment,microwave applications,high storage media,and semiconductor devices.