Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications

This work is an initial response to the demand for miniaturisation of electronic circuits and the shift to higher operating frequencies which has led to the development of high-density low-loss ferrites. In order to meet this demand, a number of necessities, such as fine-grained and homogeneous m...

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Main Author: Yahya, Noorhana
Format: Thesis
Language:English
English
Published: 1998
Subjects:
Online Access:http://psasir.upm.edu.my/id/eprint/9452/1/FSAS_1998_39_A.pdf
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spelling my-upm-ir.94522024-03-05T07:07:38Z Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications 1998-02 Yahya, Noorhana This work is an initial response to the demand for miniaturisation of electronic circuits and the shift to higher operating frequencies which has led to the development of high-density low-loss ferrites. In order to meet this demand, a number of necessities, such as fine-grained and homogeneous microstructure, low power loss, weak temperature dependencies of losses and of course reasonable cost of production are required. The first part of the work was to develop the required material by manipulation of composition. NiZn-based ferrites with various additives such as MgO, CuO, TiCh, CoO and CaO were chosen and the low loss property was attained. Subsequently, a systematic crucial approach was started to further minimise the losses and to extend the operating frequency range. Green compacts with a particle size average (PSA) of 1.2um, a sintering temperature of about 1140°C and only air atmosphere were needed to reach the research targets. In conclusion, a composition-microstructure design technique has been successfully developed, which is capable of producing ferrite materials with the desired magnetic properties. Ferrites (Magnetic materials) - Thermal properties Induction heating 1998-02 Thesis http://psasir.upm.edu.my/id/eprint/9452/ http://psasir.upm.edu.my/id/eprint/9452/1/FSAS_1998_39_A.pdf application/pdf en public masters Universiti Putra Malaysia Ferrites (Magnetic materials) - Thermal properties Induction heating Faculty of Environmental Studies Hashim, Mansor English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
advisor Hashim, Mansor
topic Ferrites (Magnetic materials) - Thermal properties
Induction heating

spellingShingle Ferrites (Magnetic materials) - Thermal properties
Induction heating

Yahya, Noorhana
Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications
description This work is an initial response to the demand for miniaturisation of electronic circuits and the shift to higher operating frequencies which has led to the development of high-density low-loss ferrites. In order to meet this demand, a number of necessities, such as fine-grained and homogeneous microstructure, low power loss, weak temperature dependencies of losses and of course reasonable cost of production are required. The first part of the work was to develop the required material by manipulation of composition. NiZn-based ferrites with various additives such as MgO, CuO, TiCh, CoO and CaO were chosen and the low loss property was attained. Subsequently, a systematic crucial approach was started to further minimise the losses and to extend the operating frequency range. Green compacts with a particle size average (PSA) of 1.2um, a sintering temperature of about 1140°C and only air atmosphere were needed to reach the research targets. In conclusion, a composition-microstructure design technique has been successfully developed, which is capable of producing ferrite materials with the desired magnetic properties.
format Thesis
qualification_level Master's degree
author Yahya, Noorhana
author_facet Yahya, Noorhana
author_sort Yahya, Noorhana
title Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications
title_short Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications
title_full Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications
title_fullStr Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications
title_full_unstemmed Development of Low-Loss Nizn-Based Ferrite Materials for High-Frequency Applications
title_sort development of low-loss nizn-based ferrite materials for high-frequency applications
granting_institution Universiti Putra Malaysia
granting_department Faculty of Environmental Studies
publishDate 1998
url http://psasir.upm.edu.my/id/eprint/9452/1/FSAS_1998_39_A.pdf
_version_ 1794018841172377600