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Study of Structural, Electrical Transport and Magnetic Properties of Ni-Cu-Zn Ferrites

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dc.contributor.advisor Sikder, Prof. Dr. Shibendra Shekher
dc.contributor.author Bahadur, Suvendu Kumar
dc.date.accessioned 2018-08-29T06:33:31Z
dc.date.available 2018-08-29T06:33:31Z
dc.date.copyright 2013
dc.date.issued 2013-07
dc.identifier.other ID 0755504
dc.identifier.uri http://hdl.handle.net/20.500.12228/426
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 Philosophy in Physics, July 2013. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 105-112).
dc.description.abstract Ni-Cu-Zn ferrites are well known technological magnetic material finding applications in various electrical devices. The present work is focused on the influence on electromagnetic and transport properties of Fe-deficient Ni-Cu-Zn ferrites. These ferrite samples of composition (Ni0.28Cu0.10Zn0.62O)(Fe2O3)x-1 , where x = 0.00, 0.02, 0.04, 0.06 and 0.08 were prepared using the solid state reaction technique. The phase identification was carried out by X-ray diffraction. The X-ray diffraction analysis revealed that the samples crystallize in single phase cubic spinel structure. A slight increase of Curie temperature (Tc) saturation magnetization (Ms) and initial permeability µʹwith increase of Fe-deficient were observed. The permeability spectrum with frequency follows the Snoek's limit. Sample with x = 0.00 sintered at 1100°C possess the maximum value of relative quality factor (RQF). From the B-H loops, the remanance (Br) and coercive force (Hc) were determined. Saturation induction (Bs) and Br/( Bs) are measured from low field B-H loops is found to increase with increasing Fe-deficient up to x = 0.04 thereafter decrease. DC resistivity increases with increasing Fe-deficient up to x = 0.06 and thereafter decrease. The dielectric constant is found to decrease continuously with increasing frequency and remains almost constant at higher frequency range. From hysteresis parameter it was revealed that optimum soft magnetic properties corresponds to the composition with x = 0.06 sintered at I 1000C having highest permeability, maximum induction, minimum coercivity and hysteresis losses. en_US
dc.description.statementofresponsibility Suvendu Kumar Bahadur
dc.format.extent 112 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 Magnetic Properties en_US
dc.subject Ni-Cu-Zn Ferrites en_US
dc.subject Electrical Transport en_US
dc.title Study of Structural, Electrical Transport and Magnetic Properties of Ni-Cu-Zn Ferrites en_US
dc.type Thesis en_US
dc.description.degree Master of Philosophy in Physics
dc.contributor.department Department of Physics

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