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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my.upm.eprints.721832020-03-06T00:38:44Z http://psasir.upm.edu.my/id/eprint/72183/ Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet Nazlan, Rodziah Ismail, Ismayadi Azis, Raba’ah Syahidah Abbas, Zulkifly Ibrahim, Idza Riati Mohd Idris, Fadzidah Shafiee, Farah Nabilah Abdul Rahim @ Arifin, Azdiya Suhada Busra, Nurul Ainaa Najihah 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 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72183/1/Dependence%20of%20magnetic%20and%20microwave%20loss%20on%20evolving%20microstructure%20in%20yttrium%20iron%20garnet.pdf Nazlan, Rodziah and Ismail, Ismayadi and Azis, Raba’ah Syahidah and Abbas, Zulkifly and Ibrahim, Idza Riati and Mohd Idris, Fadzidah and Shafiee, Farah Nabilah and Abdul Rahim @ Arifin, Azdiya Suhada and Busra, Nurul Ainaa Najihah (2018) Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet. Journal of Materials Science: Materials in Electronics, 29 (10). 8688 - 8700. ISSN 0957-4522; ESSN: 1573-482X https://link.springer.com/article/10.1007/s10854-018-8884-8 10.1007/s10854-018-8884-8 |
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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. |
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Article |
author |
Nazlan, Rodziah Ismail, Ismayadi Azis, Raba’ah Syahidah Abbas, Zulkifly Ibrahim, Idza Riati Mohd Idris, Fadzidah Shafiee, Farah Nabilah Abdul Rahim @ Arifin, Azdiya Suhada Busra, Nurul Ainaa Najihah |
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Nazlan, Rodziah Ismail, Ismayadi Azis, Raba’ah Syahidah Abbas, Zulkifly Ibrahim, Idza Riati Mohd Idris, Fadzidah Shafiee, Farah Nabilah Abdul Rahim @ Arifin, Azdiya Suhada Busra, Nurul Ainaa Najihah Dependence of magnetic and microwave loss on evolving microstructure in yttrium iron garnet |
author_facet |
Nazlan, Rodziah Ismail, Ismayadi Azis, Raba’ah Syahidah Abbas, Zulkifly Ibrahim, Idza Riati Mohd Idris, Fadzidah Shafiee, Farah Nabilah Abdul Rahim @ Arifin, Azdiya Suhada Busra, Nurul Ainaa Najihah |
author_sort |
Nazlan, Rodziah |
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://psasir.upm.edu.my/id/eprint/72183/1/Dependence%20of%20magnetic%20and%20microwave%20loss%20on%20evolving%20microstructure%20in%20yttrium%20iron%20garnet.pdf http://psasir.upm.edu.my/id/eprint/72183/ https://link.springer.com/article/10.1007/s10854-018-8884-8 |
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1662756484760469504 |
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13.18916 |