Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials
The study aims to investigate the structural and dielectric properties of perovskite La1−xSrxFeO3 (x = 0.1, 0.2, 0.3, and 0.4) synthesized by sol–gel and sintering methods. X-ray diffraction (XRD), transmission electron microscopy (TEM), and LCR-Meter were used to identify the phase, crystallography...
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| Format: | Article |
| Language: | English |
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World Scientific Publishing
2018-10-01
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| Series: | Journal of Advanced Dielectrics |
| Subjects: | |
| Online Access: | http://www.worldscientific.com/doi/pdf/10.1142/S2010135X18500364 |
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| author | D. Triyono C. A. Kafa H. Laysandra |
| author_facet | D. Triyono C. A. Kafa H. Laysandra |
| author_sort | D. Triyono |
| collection | DOAJ |
| description | The study aims to investigate the structural and dielectric properties of perovskite La1−xSrxFeO3 (x = 0.1, 0.2, 0.3, and 0.4) synthesized by sol–gel and sintering methods. X-ray diffraction (XRD), transmission electron microscopy (TEM), and LCR-Meter were used to identify the phase, crystallography parameters, morphology, particle size, and electrical behavior of the synthesized perovskite materials. The samples showed a single-phase orthorhombic crystal structure with Pbnm space group. Sr-substitution induced the volume unit cell and crystallite size to decrease. The synthesized nanoparticles were uniform and homogeneous with the particle size less than 200nm. Impedance spectroscopy (IS) was used to explain the electrical behavior as a function of frequency (100Hz to 1MHz) at various temperatures (300–373K). The presence of small polarons as charge carriers within the grain and grain boundary were elucidated from the electrical conductivity experiments. Sr-substitution caused the dielectric constant and electronic conductivity to increase with the highest values obtained from La1−xSrxFeO3 (x=0.4). |
| first_indexed | 2024-12-11T18:15:01Z |
| format | Article |
| id | doaj.art-1c39109479db4b789360f91c968905d0 |
| institution | Directory Open Access Journal |
| issn | 2010-135X 2010-1368 |
| language | English |
| last_indexed | 2024-12-11T18:15:01Z |
| publishDate | 2018-10-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Journal of Advanced Dielectrics |
| spelling | doaj.art-1c39109479db4b789360f91c968905d02022-12-22T00:55:27ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682018-10-01851850036-11850036-1010.1142/S2010135X1850036410.1142/S2010135X18500364Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materialsD. Triyono0C. A. Kafa1H. Laysandra2Department of Physics, Faculty of Mathematics and Natural Science (FMIPA), Universitas Indonesia Depok 16424, IndonesiaDepartment of Physics, Faculty of Mathematics and Natural Science (FMIPA), Universitas Indonesia Depok 16424, IndonesiaDepartment of Physics, Faculty of Mathematics and Natural Science (FMIPA), Universitas Indonesia Depok 16424, IndonesiaThe study aims to investigate the structural and dielectric properties of perovskite La1−xSrxFeO3 (x = 0.1, 0.2, 0.3, and 0.4) synthesized by sol–gel and sintering methods. X-ray diffraction (XRD), transmission electron microscopy (TEM), and LCR-Meter were used to identify the phase, crystallography parameters, morphology, particle size, and electrical behavior of the synthesized perovskite materials. The samples showed a single-phase orthorhombic crystal structure with Pbnm space group. Sr-substitution induced the volume unit cell and crystallite size to decrease. The synthesized nanoparticles were uniform and homogeneous with the particle size less than 200nm. Impedance spectroscopy (IS) was used to explain the electrical behavior as a function of frequency (100Hz to 1MHz) at various temperatures (300–373K). The presence of small polarons as charge carriers within the grain and grain boundary were elucidated from the electrical conductivity experiments. Sr-substitution caused the dielectric constant and electronic conductivity to increase with the highest values obtained from La1−xSrxFeO3 (x=0.4).http://www.worldscientific.com/doi/pdf/10.1142/S2010135X18500364La1−xSrxFeO3impedance spectroscopyconductivitydielectric |
| spellingShingle | D. Triyono C. A. Kafa H. Laysandra Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials Journal of Advanced Dielectrics La1−xSrxFeO3 impedance spectroscopy conductivity dielectric |
| title | Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials |
| title_full | Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials |
| title_fullStr | Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials |
| title_full_unstemmed | Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials |
| title_short | Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials |
| title_sort | effect of sr substitution on the structural and dielectric properties of lafeo3 perovskite materials |
| topic | La1−xSrxFeO3 impedance spectroscopy conductivity dielectric |
| url | http://www.worldscientific.com/doi/pdf/10.1142/S2010135X18500364 |
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