Effect of Zn on dielectric properties of Mn-Zn spinel ferrite synthesized by coprecipitation
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| 1. Introduction
Spinel ferrites are of great interest in fundamental science, especially for addressing the fundamental relationships between magnetic properties and their crystal chemistry and structures. Crystal chemistry shows how the chemical * Corresponding author. E-mail address: esuharyadi@ugm.ac.id 14956 A. Yusmar et al./ Materials Today: Proceedings 5 (2018) 14955–14959 composition (chemical formula), internal structure and physical properties of minerals are linked together [1]. The study about spinel ferrites has been studying both theoretically and practically due to electric, dielectric and magnetic properties that are sensibly different from those of the bulk materials and their possible applications in various fields. Among the spinel ferrites, Mn-Zn spinel ferrite has special place owing to its special unique properties like high permeability, low power loss, and high resistivity that have been used widely in various areas such as transformers, coil cores, magnetic heads, storage devices, and medical applications [2]. Mn-Zn spinel ferrite has mixed spinel structure in which the electrical properties of these ferrites are depend on their chemical compositions [3]. There are several methods used for prepared the spinel ferrites such as hydrothermal reactions, aerosol pyrolysis, laser induced vapor phase reactions, novel combustions, etc [4]. The effect of substitution with different bivalent metals to improve electrical and dielectric properties of spinel ferrites has been studied [5,6]. Atiq at al studied the effect of Zn in Ni-ferrites on dielectric properties that lead to change of dielectric properties of Ni-Zn ferrites. Related to Mn-Zn spinel ferrites, Gopalan at al studied the impact of Zn substitution in Mn-ferrites and they observed that Zn concentration changed the structural and magnetic properties but study of dielectric behavior of Mn 1-x Zn x Fe 2 O 4 spinel ferrite has not been yet reported. The present work focuses on to investigate the effect of Zn on dielectric properties of Mn 1-x Zn x Fe 2 O 4 spinel ferrite. Hopefully, the substitution of Zn in Mn-ferrite can improve dielectric properties of Mn 1-x Zn x Fe 2 O 4 spinel ferrite that can be applied for various fields. tải về 0.64 Mb. Chia sẻ với bạn bè của bạn:
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