Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas
CaxZn(1-x)Al2O4 thin films (x = 0.00; 0.05; 0.10; 0.15 and 0.20) were prepared by sol-gel method with the substitution of Zn2+ by Ca2+ in the framework of ZnAl2O4. The effect of Ca addition on the structure and morphology of CaZnAl2O4 thin films was investigated by x-ray diffraction (XRD), field-emi...
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| Format: | Article |
| Language: | English |
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Universiti Kebangsaan Malaysia
2014
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| Online Access: | http://journalarticle.ukm.my/7171/1/04_Wan_Nasarudin.pdf |
| _version_ | 1825725963871191040 |
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| author | Wan Nasarudin Wan Jalal, Huda Abdullah, Mohd Syafiq Zulfakar, Sahbudin Shaari, Mohammad Thariqul Islam, Badariah Bais, |
| author_facet | Wan Nasarudin Wan Jalal, Huda Abdullah, Mohd Syafiq Zulfakar, Sahbudin Shaari, Mohammad Thariqul Islam, Badariah Bais, |
| author_sort | Wan Nasarudin Wan Jalal, |
| collection | UKM |
| description | CaxZn(1-x)Al2O4 thin films (x = 0.00; 0.05; 0.10; 0.15 and 0.20) were prepared by sol-gel method with the substitution of Zn2+ by Ca2+ in the framework of ZnAl2O4. The effect of Ca addition on the structure and morphology of CaZnAl2O4 thin films was investigated by x-ray diffraction (XRD), field-emission scanning electron microscope (FESEM), energy-dispersive x-ray spectroscopy (EDX), ultra-violet visible (UV-Vis) and atomic force microscope (AFM). The XRD patterns showed the characteristic peaks of face-centred cubic (fcc) ZnAl2O4 and CaZnAl2O4. The addition of Ca increased the crystallite size from 8.9 to 30.2 nm. The bandgap of CaxZn(1-x)Al2O4 thin film was found in the range of 3.40 to 3.84 eV. SEM micrograph shows the morphology of all thin films is sphere-like, with the grain size increased from 33 to 123 nm. The AFM images show the roughness of surface morphology increased. The substitution of Zn2+ by Ca2+ increased the crystallite size, grain size and surface roughness which evidently increased the density (4.59 to 4.64 g/cm3) and dielectric constant (8.48 to 9.54). The composition of CaxZn(1-x)Al2O4 is considered as suitable material for GPS patch antennas. |
| first_indexed | 2024-03-06T04:03:39Z |
| format | Article |
| id | ukm.eprints-7171 |
| institution | Universiti Kebangsaan Malaysia |
| language | English |
| last_indexed | 2024-03-06T04:03:39Z |
| publishDate | 2014 |
| publisher | Universiti Kebangsaan Malaysia |
| record_format | dspace |
| spelling | ukm.eprints-71712016-12-14T06:43:17Z http://journalarticle.ukm.my/7171/ Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas Wan Nasarudin Wan Jalal, Huda Abdullah, Mohd Syafiq Zulfakar, Sahbudin Shaari, Mohammad Thariqul Islam, Badariah Bais, CaxZn(1-x)Al2O4 thin films (x = 0.00; 0.05; 0.10; 0.15 and 0.20) were prepared by sol-gel method with the substitution of Zn2+ by Ca2+ in the framework of ZnAl2O4. The effect of Ca addition on the structure and morphology of CaZnAl2O4 thin films was investigated by x-ray diffraction (XRD), field-emission scanning electron microscope (FESEM), energy-dispersive x-ray spectroscopy (EDX), ultra-violet visible (UV-Vis) and atomic force microscope (AFM). The XRD patterns showed the characteristic peaks of face-centred cubic (fcc) ZnAl2O4 and CaZnAl2O4. The addition of Ca increased the crystallite size from 8.9 to 30.2 nm. The bandgap of CaxZn(1-x)Al2O4 thin film was found in the range of 3.40 to 3.84 eV. SEM micrograph shows the morphology of all thin films is sphere-like, with the grain size increased from 33 to 123 nm. The AFM images show the roughness of surface morphology increased. The substitution of Zn2+ by Ca2+ increased the crystallite size, grain size and surface roughness which evidently increased the density (4.59 to 4.64 g/cm3) and dielectric constant (8.48 to 9.54). The composition of CaxZn(1-x)Al2O4 is considered as suitable material for GPS patch antennas. Universiti Kebangsaan Malaysia 2014-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7171/1/04_Wan_Nasarudin.pdf Wan Nasarudin Wan Jalal, and Huda Abdullah, and Mohd Syafiq Zulfakar, and Sahbudin Shaari, and Mohammad Thariqul Islam, and Badariah Bais, (2014) Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas. Sains Malaysiana, 43 (6). pp. 833-842. ISSN 0126-6039 http://www.ukm.my/jsm/ |
| spellingShingle | Wan Nasarudin Wan Jalal, Huda Abdullah, Mohd Syafiq Zulfakar, Sahbudin Shaari, Mohammad Thariqul Islam, Badariah Bais, Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas |
| title | Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas |
| title_full | Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas |
| title_fullStr | Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas |
| title_full_unstemmed | Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas |
| title_short | Characteristics of nanostructured CaxZn(1-x)Al2O4 thin films prepared by Sol-Gel method for GPS patch antennas |
| title_sort | characteristics of nanostructured caxzn 1 x al2o4 thin films prepared by sol gel method for gps patch antennas |
| url | http://journalarticle.ukm.my/7171/1/04_Wan_Nasarudin.pdf |
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