Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics
In this paper, we report the synthesis, phase formation, and basic characterization of polycrystalline Bi2Fe4O9, Bi1.98Ba0.02Fe4O9, and Bi1.98Ce0.02Fe4O9 samples prepared by the sol-gel technique. The crystal structure of the prepared samples has been characterized by means of X-ray diffraction and...
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| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5597415 |
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| author | Ashwini Kumar Poorva Sharma Nikhil Bhardwaj Jingyou Tang Guolong Tan |
| author_facet | Ashwini Kumar Poorva Sharma Nikhil Bhardwaj Jingyou Tang Guolong Tan |
| author_sort | Ashwini Kumar |
| collection | DOAJ |
| description | In this paper, we report the synthesis, phase formation, and basic characterization of polycrystalline Bi2Fe4O9, Bi1.98Ba0.02Fe4O9, and Bi1.98Ce0.02Fe4O9 samples prepared by the sol-gel technique. The crystal structure of the prepared samples has been characterized by means of X-ray diffraction and Raman scattering spectroscopy. All the obtained XRD peaks can be indexed to the orthorhombic Pbam structure and reveal the formation of Bi2Fe4O9. The Raman spectrum identifies Ag, B2g, and B3g active optical phonon modes. The crystallite size and morphology of the nanoparticles have been analyzed using scanning electron microscope (SEM). Dielectric constant (ε′) decreases as the frequency increases, and it is constant at the higher frequency region which can be explained based on the ionic conduction phenomenon in the low frequency region. The ε′ values of Bi2Fe4O9(650–850), Bi2Fe4O9(800–850), Bi1.98Ba0.02Fe4O9, and Bi1.98Ce0.02Fe4O9 samples at 10 Hz frequency are about 37, 75, 90, and 393, respectively. The observed properties signify that these materials are very useful in advanced technological and practical applications. |
| format | Article |
| id | doaj-art-a1e686168fb34e76a054d51f1f028495 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-a1e686168fb34e76a054d51f1f0284952025-02-03T07:23:58ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/55974155597415Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic CeramicsAshwini Kumar0Poorva Sharma1Nikhil Bhardwaj2Jingyou Tang3Guolong Tan4Key Laboratory of Multifunctional Materials, Department of Electronic Engineering, Luzhou Vocational and Technical College, Luzhou, Sichuan 646000, ChinaKey Laboratory of Multifunctional Materials, Department of Electronic Engineering, Luzhou Vocational and Technical College, Luzhou, Sichuan 646000, ChinaSchool of Physics, Devi Ahilya University, Indore 452001, IndiaKey Laboratory of Multifunctional Materials, Department of Electronic Engineering, Luzhou Vocational and Technical College, Luzhou, Sichuan 646000, ChinaKey Laboratory of Multifunctional Materials, Department of Electronic Engineering, Luzhou Vocational and Technical College, Luzhou, Sichuan 646000, ChinaIn this paper, we report the synthesis, phase formation, and basic characterization of polycrystalline Bi2Fe4O9, Bi1.98Ba0.02Fe4O9, and Bi1.98Ce0.02Fe4O9 samples prepared by the sol-gel technique. The crystal structure of the prepared samples has been characterized by means of X-ray diffraction and Raman scattering spectroscopy. All the obtained XRD peaks can be indexed to the orthorhombic Pbam structure and reveal the formation of Bi2Fe4O9. The Raman spectrum identifies Ag, B2g, and B3g active optical phonon modes. The crystallite size and morphology of the nanoparticles have been analyzed using scanning electron microscope (SEM). Dielectric constant (ε′) decreases as the frequency increases, and it is constant at the higher frequency region which can be explained based on the ionic conduction phenomenon in the low frequency region. The ε′ values of Bi2Fe4O9(650–850), Bi2Fe4O9(800–850), Bi1.98Ba0.02Fe4O9, and Bi1.98Ce0.02Fe4O9 samples at 10 Hz frequency are about 37, 75, 90, and 393, respectively. The observed properties signify that these materials are very useful in advanced technological and practical applications.http://dx.doi.org/10.1155/2021/5597415 |
| spellingShingle | Ashwini Kumar Poorva Sharma Nikhil Bhardwaj Jingyou Tang Guolong Tan Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics Advances in Materials Science and Engineering |
| title | Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics |
| title_full | Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics |
| title_fullStr | Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics |
| title_full_unstemmed | Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics |
| title_short | Investigation of Structural, Electrical, and Vibrational Properties of Bi1.98A0.02Fe4O9 (A = Ba, Ce) Multiferroic Ceramics |
| title_sort | investigation of structural electrical and vibrational properties of bi1 98a0 02fe4o9 a ba ce multiferroic ceramics |
| url | http://dx.doi.org/10.1155/2021/5597415 |
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