Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles
Strontium spinel ferrite nanoparticles (SrFe2O4) were prepared by the sol–gel method using precursors with different pH values. The morphology and structure of the samples were characterized by field emission scanning electron microscopy (FESEM), and X-ray diffraction (XRD). The results of X-ray dif...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420316707 |
| _version_ | 1818865857183350784 |
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| author | S.E. Mousavi Ghahfarokhi E. Mohammadzadeh Shobegar |
| author_facet | S.E. Mousavi Ghahfarokhi E. Mohammadzadeh Shobegar |
| author_sort | S.E. Mousavi Ghahfarokhi |
| collection | DOAJ |
| description | Strontium spinel ferrite nanoparticles (SrFe2O4) were prepared by the sol–gel method using precursors with different pH values. The morphology and structure of the samples were characterized by field emission scanning electron microscopy (FESEM), and X-ray diffraction (XRD). The results of X-ray diffraction patterns showed that the ferrite phase was formed in all samples. The average crystallite size was calculated by the Scherer formula and the average crystallite size about 20 nm is obtained. The results of the analysis (FT-IR) show that the samples consist of tetrahedral and octahedral sites. The optical properties using UV–vis spectrophotometer were studied. From optical characterization, it was found that the band gap decreases as the pH increases from 1 to 9. The magnetic properties of the nanoparticles were measured by vibrational sample magnetometer (VSM) and showed that by increasing pH, the value of the Hc is decreased. These changes in the Hc are related to size change, distribution of ions, tilting, and anisotropy effects. |
| first_indexed | 2024-12-19T10:54:12Z |
| format | Article |
| id | doaj.art-c1fcba09917e42bc85ec0d369af98f58 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-19T10:54:12Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-c1fcba09917e42bc85ec0d369af98f582022-12-21T20:24:52ZengElsevierJournal of Materials Research and Technology2238-78542020-11-01961217712186Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticlesS.E. Mousavi Ghahfarokhi0E. Mohammadzadeh Shobegar1Corresponding author.; Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, IranDepartment of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, IranStrontium spinel ferrite nanoparticles (SrFe2O4) were prepared by the sol–gel method using precursors with different pH values. The morphology and structure of the samples were characterized by field emission scanning electron microscopy (FESEM), and X-ray diffraction (XRD). The results of X-ray diffraction patterns showed that the ferrite phase was formed in all samples. The average crystallite size was calculated by the Scherer formula and the average crystallite size about 20 nm is obtained. The results of the analysis (FT-IR) show that the samples consist of tetrahedral and octahedral sites. The optical properties using UV–vis spectrophotometer were studied. From optical characterization, it was found that the band gap decreases as the pH increases from 1 to 9. The magnetic properties of the nanoparticles were measured by vibrational sample magnetometer (VSM) and showed that by increasing pH, the value of the Hc is decreased. These changes in the Hc are related to size change, distribution of ions, tilting, and anisotropy effects.http://www.sciencedirect.com/science/article/pii/S2238785420316707NanoparticlesStrontium ferritepH effectStructural propertiesMagnetic propertiesOptical properties |
| spellingShingle | S.E. Mousavi Ghahfarokhi E. Mohammadzadeh Shobegar Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles Journal of Materials Research and Technology Nanoparticles Strontium ferrite pH effect Structural properties Magnetic properties Optical properties |
| title | Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles |
| title_full | Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles |
| title_fullStr | Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles |
| title_full_unstemmed | Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles |
| title_short | Influence of pH on the structural, magnetic and optical properties of SrFe2O4 nanoparticles |
| title_sort | influence of ph on the structural magnetic and optical properties of srfe2o4 nanoparticles |
| topic | Nanoparticles Strontium ferrite pH effect Structural properties Magnetic properties Optical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420316707 |
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