Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites
We are reporting the synthesis along with magnetic, ac conductivity and dielectric properties of hematite nanocrystallites. The prepared Fe2O3 is crystallizing in corundum structure which belongs to the rhombohedron system with the space group R3-c. The magnetization data shows a typical Morin trans...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Vasyl Stefanyk Precarpathian National University
2023-04-01
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| Series: | Фізика і хімія твердого тіла |
| Subjects: | |
| Online Access: | https://journals.pnu.edu.ua/index.php/pcss/article/view/6159 |
| _version_ | 1827814706354585600 |
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| author | Naresh Babu Gatchakayala Rama Sekhara Reddy Dachuru |
| author_facet | Naresh Babu Gatchakayala Rama Sekhara Reddy Dachuru |
| author_sort | Naresh Babu Gatchakayala |
| collection | DOAJ |
| description | We are reporting the synthesis along with magnetic, ac conductivity and dielectric properties of hematite nanocrystallites. The prepared Fe2O3 is crystallizing in corundum structure which belongs to the rhombohedron system with the space group R3-c. The magnetization data shows a typical Morin transition, TN = 265 K for 110 nm crystallites, whereas this transition is decreasing with decrease in crystallite size, TN = 252 K for 33 nm. The value of magnetization is increased with increasing crystallite size. The enhanced dielectric permittivity and ac conductivity were observed in higher hematite crystallite size. The overall dielectric response has revealed conduction mechanism is due to the extrinsic contribution from the dominant Maxwell-Wagner polarization. |
| first_indexed | 2024-03-11T23:49:42Z |
| format | Article |
| id | doaj.art-f32b2c589f9a4fc5a59e7393a08f89ef |
| institution | Directory Open Access Journal |
| issn | 1729-4428 2309-8589 |
| language | English |
| last_indexed | 2024-03-11T23:49:42Z |
| publishDate | 2023-04-01 |
| publisher | Vasyl Stefanyk Precarpathian National University |
| record_format | Article |
| series | Фізика і хімія твердого тіла |
| spelling | doaj.art-f32b2c589f9a4fc5a59e7393a08f89ef2023-09-19T08:42:35ZengVasyl Stefanyk Precarpathian National UniversityФізика і хімія твердого тіла1729-44282309-85892023-04-0124224424810.15330/pcss.24.2.244-2486159Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallitesNaresh Babu Gatchakayala0Rama Sekhara Reddy Dachuru1Krishna University, Machilipatnam, Andhra Pradesh, IndiaKrishna University, Machilipatnam, Andhra Pradesh, IndiaWe are reporting the synthesis along with magnetic, ac conductivity and dielectric properties of hematite nanocrystallites. The prepared Fe2O3 is crystallizing in corundum structure which belongs to the rhombohedron system with the space group R3-c. The magnetization data shows a typical Morin transition, TN = 265 K for 110 nm crystallites, whereas this transition is decreasing with decrease in crystallite size, TN = 252 K for 33 nm. The value of magnetization is increased with increasing crystallite size. The enhanced dielectric permittivity and ac conductivity were observed in higher hematite crystallite size. The overall dielectric response has revealed conduction mechanism is due to the extrinsic contribution from the dominant Maxwell-Wagner polarization.https://journals.pnu.edu.ua/index.php/pcss/article/view/6159hematite nanoparticlescole-cole plotdielectric propertiesac conductivityimpedance |
| spellingShingle | Naresh Babu Gatchakayala Rama Sekhara Reddy Dachuru Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites Фізика і хімія твердого тіла hematite nanoparticles cole-cole plot dielectric properties ac conductivity impedance |
| title | Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites |
| title_full | Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites |
| title_fullStr | Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites |
| title_full_unstemmed | Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites |
| title_short | Synthesis, magnetic, AC conductivity and dielectric properties of hematite nanocrystallites |
| title_sort | synthesis magnetic ac conductivity and dielectric properties of hematite nanocrystallites |
| topic | hematite nanoparticles cole-cole plot dielectric properties ac conductivity impedance |
| url | https://journals.pnu.edu.ua/index.php/pcss/article/view/6159 |
| work_keys_str_mv | AT nareshbabugatchakayala synthesismagneticacconductivityanddielectricpropertiesofhematitenanocrystallites AT ramasekharareddydachuru synthesismagneticacconductivityanddielectricpropertiesofhematitenanocrystallites |