Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG)
Aluminum-substituted Yttrium iron garnet, Al-YIG (Y3AlxFe5-xO12; x = 0.4, 0.8, 1.2, 1.6 and 2.0) samples were synthesized via auto combustion sol-gel technique. The obtained powder was heated at 950 °C, pressed into pellets and sintered at 1200 oC. The samples microstructures were studied using Fie...
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| Format: | Article |
| Language: | English |
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American Institute of Physics
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/89352/ http://psasir.upm.edu.my/id/eprint/89352/1/Influence%20of%20aluminum.pdf |
| _version_ | 1848860833489092608 |
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| author | Musa, Makiyyu Abdullahi Azis, Raba’ah Syahidah Dong, Xiangting Osman, Nurul Huda Hassan, Jumiah Muhammad, Farah Diana Mokhtar, Nurhidayaty |
| author_facet | Musa, Makiyyu Abdullahi Azis, Raba’ah Syahidah Dong, Xiangting Osman, Nurul Huda Hassan, Jumiah Muhammad, Farah Diana Mokhtar, Nurhidayaty |
| author_sort | Musa, Makiyyu Abdullahi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Aluminum-substituted Yttrium iron garnet, Al-YIG (Y3AlxFe5-xO12; x = 0.4, 0.8, 1.2, 1.6 and 2.0) samples were synthesized via auto combustion sol-gel technique. The obtained powder was heated
at 950 °C, pressed into pellets and sintered at 1200 oC. The samples microstructures were studied using Field emissions scanning electron microscopy (FESEM). The average grain size decreased from 0.46 µm at x = 0.4 to a minimum value of 0.33 µm at x = 2.0. Elemental composition of the samples was studied by energy dispersive x-ray (EDX), while bulk density was measured by
Archimedes principle. Electrical and dielectric measurements were carried out using Agilent impedance analyzer. Generally, the samples resistivity decreased with Al concentration. At 1 MHz
frequency, the sample x = 0.4 has the highest resistivity of 2.19 × 105 Ωm which decreases down to its minimum value of 1.75 × 104 Ωm at x = 2.0. The dielectric constant for all the samples decreased with frequency. For the sample x = 0.4, the ε'r decreased from 49.03 at 40 Hz to 8.08 at 1 MHz. The dielectric loss tangent, tan δ decreased with increasing frequency, while it increased with Al substitution. Permeability values were calculated from permittivity data. The real ermeability decreases from 1263.12 at x = 0.4 to 6.96 at x = 1.2, and the decreased down to 11.74 at x = 2.0. The high dielectric constant, low resistivity and low loss values of the samples indicate their suitability for miniaturization of radio frequency devices, antenna and filter resonator. |
| first_indexed | 2025-11-15T12:51:31Z |
| format | Article |
| id | upm-89352 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:51:31Z |
| publishDate | 2020 |
| publisher | American Institute of Physics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-893522021-09-20T12:56:00Z http://psasir.upm.edu.my/id/eprint/89352/ Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) Musa, Makiyyu Abdullahi Azis, Raba’ah Syahidah Dong, Xiangting Osman, Nurul Huda Hassan, Jumiah Muhammad, Farah Diana Mokhtar, Nurhidayaty Aluminum-substituted Yttrium iron garnet, Al-YIG (Y3AlxFe5-xO12; x = 0.4, 0.8, 1.2, 1.6 and 2.0) samples were synthesized via auto combustion sol-gel technique. The obtained powder was heated at 950 °C, pressed into pellets and sintered at 1200 oC. The samples microstructures were studied using Field emissions scanning electron microscopy (FESEM). The average grain size decreased from 0.46 µm at x = 0.4 to a minimum value of 0.33 µm at x = 2.0. Elemental composition of the samples was studied by energy dispersive x-ray (EDX), while bulk density was measured by Archimedes principle. Electrical and dielectric measurements were carried out using Agilent impedance analyzer. Generally, the samples resistivity decreased with Al concentration. At 1 MHz frequency, the sample x = 0.4 has the highest resistivity of 2.19 × 105 Ωm which decreases down to its minimum value of 1.75 × 104 Ωm at x = 2.0. The dielectric constant for all the samples decreased with frequency. For the sample x = 0.4, the ε'r decreased from 49.03 at 40 Hz to 8.08 at 1 MHz. The dielectric loss tangent, tan δ decreased with increasing frequency, while it increased with Al substitution. Permeability values were calculated from permittivity data. The real ermeability decreases from 1263.12 at x = 0.4 to 6.96 at x = 1.2, and the decreased down to 11.74 at x = 2.0. The high dielectric constant, low resistivity and low loss values of the samples indicate their suitability for miniaturization of radio frequency devices, antenna and filter resonator. American Institute of Physics 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/89352/1/Influence%20of%20aluminum.pdf Musa, Makiyyu Abdullahi and Azis, Raba’ah Syahidah and Dong, Xiangting and Osman, Nurul Huda and Hassan, Jumiah and Muhammad, Farah Diana and Mokhtar, Nurhidayaty (2020) Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG). AIP Advances, 10. art. no. 045128. pp. 1-10. ISSN 2158-3226 https://aip.scitation.org/doi/full/10.1063/1.5111894 10.1063/1.5111894 |
| spellingShingle | Musa, Makiyyu Abdullahi Azis, Raba’ah Syahidah Dong, Xiangting Osman, Nurul Huda Hassan, Jumiah Muhammad, Farah Diana Mokhtar, Nurhidayaty Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) |
| title | Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) |
| title_full | Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) |
| title_fullStr | Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) |
| title_full_unstemmed | Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) |
| title_short | Influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (YlG) |
| title_sort | influence of aluminum substitution on microstructural, electrical, dielectric and electromagnetic properties of sol-gel synthesized yttrium iron garnet (ylg) |
| url | http://psasir.upm.edu.my/id/eprint/89352/ http://psasir.upm.edu.my/id/eprint/89352/ http://psasir.upm.edu.my/id/eprint/89352/ http://psasir.upm.edu.my/id/eprint/89352/1/Influence%20of%20aluminum.pdf |