Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet

The parallel magnetic and microwave loss dependence on microstructural evolutions in several polycrystalline yttrium iron garnet samples were studied in detail, focusing on the attendant occurrence of their relationships. In this study, polycrystalline YIG samples were synthesized by employing the m...

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Main Authors:	Rodziah, Nazlan, Ismayadi, Ismail, Raba’ah Syahidah, Azis, Zulkifly, Abbas, Idza Riati, Ibrahim, Fadzidah, Mohd Idris, Farah Nabilah, Shafiee, Azdiya Suhada, Aripin, Nurul Ainaa Najihah, Busra
Format:	Article
Language:	English
Published:	Springer 2018
Subjects:	Q Science (General) QC Physics T Technology (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/21948/ http://umpir.ump.edu.my/id/eprint/21948/ http://umpir.ump.edu.my/id/eprint/21948/ http://umpir.ump.edu.my/id/eprint/21948/7/DependenceOfMagneticAndMicrowa1.pdf

id	ump-21948
recordtype	eprints
spelling	ump-219482018-08-14T08:10:48Z http://umpir.ump.edu.my/id/eprint/21948/ Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet Rodziah, Nazlan Ismayadi, Ismail Raba’ah Syahidah, Azis Zulkifly, Abbas Idza Riati, Ibrahim Fadzidah, Mohd Idris Farah Nabilah, Shafiee Azdiya Suhada, Aripin Nurul Ainaa Najihah, Busra Q Science (General) QC Physics T Technology (General) The parallel magnetic and microwave loss dependence on microstructural evolutions in several polycrystalline yttrium iron garnet samples were studied in detail, focusing on the attendant occurrence of their relationships. In this study, polycrystalline YIG samples were synthesized by employing the mechanical alloying technique and sintering toroidal compacts at temperatures from 600 to 1400 °C. The samples were characterized for their evolution in crystalline phases, structure, microstructure, magnetic hysteresis parameters, microwave losses and electrical resistivity. The results showed an increasing tendency of the saturation magnetization with grain size, which is attributed to crystallinity increase in the grains. The M–H hysteresis loop results showed a transition from disordered-to-ordered magnetism which belongs to different magnetically dominant stages of formation. The starting appearance of room temperature ferromagnetic order suggested by the sigmoid-shaped loops seems to be dependent on crystallinity, phase purity and a sufficient number of large enough magnetic domain-containing grains having been formed in the microstructure. An increasing trend of transmission loss with grain size may be attributed to increment of loss contribution from hysteresis and domain wall resonance of the samples. The changes in crystallinity and microstructure, and the associated processes of microwave resonance and relaxation due to domain wall movements and damping of spin rotation contributes to the variations in transmission loss and ferromagnetic linewidth of the samples. The increased electrical resistivity while the microstructure was evolving is believed to strongly indicates improved phase purity and compositional stoichiometry. Springer 2018-03-14 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/21948/7/DependenceOfMagneticAndMicrowa1.pdf Rodziah, Nazlan and Ismayadi, Ismail and Raba’ah Syahidah, Azis and Zulkifly, Abbas and Idza Riati, Ibrahim and Fadzidah, Mohd Idris and Farah Nabilah, Shafiee and Azdiya Suhada, Aripin and Nurul Ainaa Najihah, Busra (2018) Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet. Journal of Materials Science: Materials in Electronics, 29 (10). pp. 8688-8700. ISSN 1573-482X https://doi.org/10.1007/s10854-018-8884-8 doi: 10.1007/s10854-018-8884-8
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General) QC Physics T Technology (General)
spellingShingle	Q Science (General) QC Physics T Technology (General) Rodziah, Nazlan Ismayadi, Ismail Raba’ah Syahidah, Azis Zulkifly, Abbas Idza Riati, Ibrahim Fadzidah, Mohd Idris Farah Nabilah, Shafiee Azdiya Suhada, Aripin Nurul Ainaa Najihah, Busra Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
description	The parallel magnetic and microwave loss dependence on microstructural evolutions in several polycrystalline yttrium iron garnet samples were studied in detail, focusing on the attendant occurrence of their relationships. In this study, polycrystalline YIG samples were synthesized by employing the mechanical alloying technique and sintering toroidal compacts at temperatures from 600 to 1400 °C. The samples were characterized for their evolution in crystalline phases, structure, microstructure, magnetic hysteresis parameters, microwave losses and electrical resistivity. The results showed an increasing tendency of the saturation magnetization with grain size, which is attributed to crystallinity increase in the grains. The M–H hysteresis loop results showed a transition from disordered-to-ordered magnetism which belongs to different magnetically dominant stages of formation. The starting appearance of room temperature ferromagnetic order suggested by the sigmoid-shaped loops seems to be dependent on crystallinity, phase purity and a sufficient number of large enough magnetic domain-containing grains having been formed in the microstructure. An increasing trend of transmission loss with grain size may be attributed to increment of loss contribution from hysteresis and domain wall resonance of the samples. The changes in crystallinity and microstructure, and the associated processes of microwave resonance and relaxation due to domain wall movements and damping of spin rotation contributes to the variations in transmission loss and ferromagnetic linewidth of the samples. The increased electrical resistivity while the microstructure was evolving is believed to strongly indicates improved phase purity and compositional stoichiometry.
format	Article
author	Rodziah, Nazlan Ismayadi, Ismail Raba’ah Syahidah, Azis Zulkifly, Abbas Idza Riati, Ibrahim Fadzidah, Mohd Idris Farah Nabilah, Shafiee Azdiya Suhada, Aripin Nurul Ainaa Najihah, Busra
author_facet	Rodziah, Nazlan Ismayadi, Ismail Raba’ah Syahidah, Azis Zulkifly, Abbas Idza Riati, Ibrahim Fadzidah, Mohd Idris Farah Nabilah, Shafiee Azdiya Suhada, Aripin Nurul Ainaa Najihah, Busra
author_sort	Rodziah, Nazlan
title	Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
title_short	Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
title_full	Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
title_fullStr	Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
title_full_unstemmed	Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
title_sort	dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet
publisher	Springer
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/21948/ http://umpir.ump.edu.my/id/eprint/21948/ http://umpir.ump.edu.my/id/eprint/21948/ http://umpir.ump.edu.my/id/eprint/21948/7/DependenceOfMagneticAndMicrowa1.pdf
first_indexed	2023-09-18T22:32:26Z
last_indexed	2023-09-18T22:32:26Z
_version_	1777416374986997760

Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet

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