KUET Institutional Repository

Study of the Effect of Rare Earth Ions on the Structural, Magnetic and Electrical Properties of Cu-Zn Ferrites

Show simple item record

dc.contributor.advisor Sikder, Prof. Dr. Shibendra Shekher
dc.contributor.author Mondal, Prodip Kumar
dc.date.accessioned 2018-08-08T11:46:34Z
dc.date.available 2018-08-08T11:46:34Z
dc.date.copyright 2018
dc.date.issued 2018-05
dc.identifier.other ID 1655556
dc.identifier.uri http://hdl.handle.net/20.500.12228/202
dc.description This thesis is submitted to the Department of Physics, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Physics, May 2018. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 66-72).
dc.description.abstract Rare earth substituted Fe in Cu-Zn ferrites are well-known technological magnetic materials used for manufacturing of multilayer chip inductor and applications in various electrical devices. The present work is focused on the effect of rare earth ion on structural, magnetic and transport properties of (Cu0.5Zn0.5Fe2-x)RExO4 [ x = 0.00, 0.05 and 0.10] ferrites where RE = La and Sm were prepared by solid state reaction technique keeping in view of their ionic radial and valences for maintain the charge neutrality sintered at 1100oC with 3 hours holding time. The Xray diffraction analysis revealed that rare earth free sample shows formulation of single phase cubic spinel structure with no extra peak but other two La and Sm substituted Fe in Cu-Zn samples show additional peaks other cubic spinel structure and corresponding to a second orthoferrite phase. Lattice parameter, bulk density, Xray density and porosity of the studied samples are increased with both La or Sm substituted ions. Lattice parameter of both series are slightly decrease with increase x content. A significant increase in initial permeability about 620 is found in (Cu0.5Zn0.5Fe1.95)La0.05O4 but increase La content decrease initial permeability. This enhancement of permeability may be correlated with improved microstructural features. But the initial permeability decreases with increasing Sm ions in ferrite. Quality factor signifies the merit of the material from the application point of view. The dielectric constant is found to decrease continuously with increasing frequency and remain almost constant at higher frequency range. The dielectric behavior of the experimental ferrite samples explained on the basis of the mechanism of the dielectric polarization and conduction process. The decrease of saturation magnetization with increasing of both rare earth substitutions has been explained on the Neel’s collinear two sublattices magnetization model and Yafet-Kittels non-collinear magnetization model. en_US
dc.description.statementofresponsibility Prodip Kumar Mondal
dc.format.extent 73 pages
dc.language.iso en_US en_US
dc.publisher Khulna University of Engineering & Technology (KUET), Khulna, Bangladesh en_US
dc.rights Khulna University of Engineering & Technology (KUET) thesis/dissertation/internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
dc.subject Rare Earth en_US
dc.subject Earth Ion en_US
dc.subject Ferrites en_US
dc.subject Rare Earth Ferrites en_US
dc.title Study of the Effect of Rare Earth Ions on the Structural, Magnetic and Electrical Properties of Cu-Zn Ferrites en_US
dc.type Thesis en_US
dc.description.degree Master of Science in Physics
dc.contributor.department Department of Physics

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search KUET IR


My Account