Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles
Zn-Ni ferrite nanoparticles were successfully synthesized by coprecipitation method. The samples were annealed at various temperatures, i.e., 200 °C, 400 °C, 600 °C, 800 °C, and 1000 °C. The nanoparticles have the mixed spinel phase structure as confirmed by the X-ray diffraction patterns. The cryst...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/abe986 |
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| author | Edi Suharyadi Sri Handika Pratiwi I Putu Tedy Indrayana Takeshi Kato Satoshi Iwata Keisuke Ohto |
| author_facet | Edi Suharyadi Sri Handika Pratiwi I Putu Tedy Indrayana Takeshi Kato Satoshi Iwata Keisuke Ohto |
| author_sort | Edi Suharyadi |
| collection | DOAJ |
| description | Zn-Ni ferrite nanoparticles were successfully synthesized by coprecipitation method. The samples were annealed at various temperatures, i.e., 200 °C, 400 °C, 600 °C, 800 °C, and 1000 °C. The nanoparticles have the mixed spinel phase structure as confirmed by the X-ray diffraction patterns. The crystallite size was 15.1 nm and increased to 25.1 nm after annealing at 1000 °C. Transmission electron microscope images showed that the annealed sample exhibited better dispersion and grain boundaries compared to the as-prepared sample. Fourier transform infra-red spectra showed the existence of vibrations at 378 cm ^−1 and 555 cm ^−1 , confirming bonding for mixed spinel ferrites. The hysteresis measurement by using vibrating sample magnetometer confirmed that the sample possessed soft magnetic properties with a coercivity of 45 Oe and increased after annealing. The saturation magnetization of the as-prepared sample was 11 emu g ^−1 , and increased to 58 emu g ^−1 after annealing at a temperature of 800 and 1000 °C. The specific absorption rate (SAR) with an alternating current magnetic field (50 Hz and 100 Oe) of Zn-Ni ferrite before and after annealing (at 800 °C) was 63.7 and 92.4 mW g ^−1 , respectively. The results showed that annealing temperature has a significant role in determining the microstructural, the magnetic properties and the SAR of the nanoparticles. |
| first_indexed | 2024-03-12T15:41:03Z |
| format | Article |
| id | doaj.art-47a34d328208424db1e26f021a107df6 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:03Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
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| series | Materials Research Express |
| spelling | doaj.art-47a34d328208424db1e26f021a107df62023-08-09T15:59:00ZengIOP PublishingMaterials Research Express2053-15912021-01-018303610110.1088/2053-1591/abe986Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticlesEdi Suharyadi0https://orcid.org/0000-0002-9845-3707Sri Handika Pratiwi1I Putu Tedy Indrayana2Takeshi Kato3Satoshi Iwata4Keisuke Ohto5Department of Physics, Universitas Gadjah Mada , Yogyakarta, IndonesiaDepartment of Physics, Universitas Gadjah Mada , Yogyakarta, IndonesiaDepartment of Physics, Faculty of Mathematics and Natural Sciences, Universitas Udayana , Denpasar, IndonesiaInstitute of Materials and Systems for Sustainability, Nagoya University , Nagoya, JapanInstitute of Materials and Systems for Sustainability, Nagoya University , Nagoya, JapanDepartment of Chemistry and Applied Chemistry, Saga University , JapanZn-Ni ferrite nanoparticles were successfully synthesized by coprecipitation method. The samples were annealed at various temperatures, i.e., 200 °C, 400 °C, 600 °C, 800 °C, and 1000 °C. The nanoparticles have the mixed spinel phase structure as confirmed by the X-ray diffraction patterns. The crystallite size was 15.1 nm and increased to 25.1 nm after annealing at 1000 °C. Transmission electron microscope images showed that the annealed sample exhibited better dispersion and grain boundaries compared to the as-prepared sample. Fourier transform infra-red spectra showed the existence of vibrations at 378 cm ^−1 and 555 cm ^−1 , confirming bonding for mixed spinel ferrites. The hysteresis measurement by using vibrating sample magnetometer confirmed that the sample possessed soft magnetic properties with a coercivity of 45 Oe and increased after annealing. The saturation magnetization of the as-prepared sample was 11 emu g ^−1 , and increased to 58 emu g ^−1 after annealing at a temperature of 800 and 1000 °C. The specific absorption rate (SAR) with an alternating current magnetic field (50 Hz and 100 Oe) of Zn-Ni ferrite before and after annealing (at 800 °C) was 63.7 and 92.4 mW g ^−1 , respectively. The results showed that annealing temperature has a significant role in determining the microstructural, the magnetic properties and the SAR of the nanoparticles.https://doi.org/10.1088/2053-1591/abe986magnetic nanoparticlesannealing temperatureferritesmicrostructuralspecific absorption rate |
| spellingShingle | Edi Suharyadi Sri Handika Pratiwi I Putu Tedy Indrayana Takeshi Kato Satoshi Iwata Keisuke Ohto Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles Materials Research Express magnetic nanoparticles annealing temperature ferrites microstructural specific absorption rate |
| title | Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles |
| title_full | Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles |
| title_fullStr | Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles |
| title_full_unstemmed | Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles |
| title_short | Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles |
| title_sort | effects of annealing temperature on microstructural magnetic properties and specific absorption rate of zn ni ferrite nanoparticles |
| topic | magnetic nanoparticles annealing temperature ferrites microstructural specific absorption rate |
| url | https://doi.org/10.1088/2053-1591/abe986 |
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