Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field
The CaFe12O19/MnFe2O4 composites with the hard (CaFe12O19) and soft (MnFe2O4) magnetic phases, were prepared by chemical co-precipitation method. The prepared composites were calcined at three different temperatures to form different phases. The structural, morphological, and magnetic properties of...
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Frontiers Media S.A.
2024-03-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2024.1347113/full |
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| author | Ishtiaque Syed Ishtiaque Syed Sharmin Akter Lima Nandita Deb M. Al-mamun Sheikh Manjura Hoque |
| author_facet | Ishtiaque Syed Ishtiaque Syed Sharmin Akter Lima Nandita Deb M. Al-mamun Sheikh Manjura Hoque |
| author_sort | Ishtiaque Syed |
| collection | DOAJ |
| description | The CaFe12O19/MnFe2O4 composites with the hard (CaFe12O19) and soft (MnFe2O4) magnetic phases, were prepared by chemical co-precipitation method. The prepared composites were calcined at three different temperatures to form different phases. The structural, morphological, and magnetic properties of composite were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), room temperature vibrational sample magnetometer (VSM), and transmission electron microscopy (TEM). The presence of the hard and soft phases has been confirmed without any secondary phase from XRD analysis, indicating the formation of composite. The crystallite size is found to be in the range of 24–44 nm calculated by Scherrer’s formula. The TEM revealed hexagonal platelets of CaFe12O19 with spinel MnFe2O4 particles with an average particle size of 48 nm formed at the surface of the CaFe12O19/MnFe2O4 composite. The room temperature magnetic properties of composite were evaluated by employing VSM. The magnetic measurements have displayed enhancement in coercivity and magnetization for CaFe12O19/MnFe2O4, indicating that the composite possessed excellent exchange coupling. The composite’s enhanced energy product ((BH)max) made it highly promising for biomedical applications such as hyperthermia. The exchange-spring coupled magnetic composite was coated with dextran to make it biocompatible, which is necessary for hyperthermia applications. The coating was confirmed using Fourier transform infrared spectroscopy (FTIR). Cytotoxicity tests on Vero cell lines showed that the coated composites had an excellent (>95%) cell survival rate. The hyperthermia heating of composite was measured for different concentrations of composite (0.25, 0.5, 1, 2, and 4 mg/mL) from which specific loss power (SLP) was calculated. From these SLP values, the optimized concentration was identified. |
| first_indexed | 2024-03-07T14:18:54Z |
| format | Article |
| id | doaj.art-e676b08206634faa9cfc7576dd85ff5d |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-03-07T14:18:54Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-e676b08206634faa9cfc7576dd85ff5d2024-03-06T10:20:22ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462024-03-011210.3389/fchem.2024.13471131347113Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency fieldIshtiaque Syed0Ishtiaque Syed1Sharmin Akter Lima2Nandita Deb3M. Al-mamun4Sheikh Manjura Hoque5Centre for Advanced Research in Sciences (CARS), University of Dhaka, Dhaka, BangladeshDepartment of Physics, University of Dhaka, Dhaka, BangladeshDepartment of Physics, University of Dhaka, Dhaka, BangladeshDepartment of Physics, University of Dhaka, Dhaka, BangladeshMaterials Science Division, Atomic Energy Centre, Dhaka, BangladeshMaterials Science Division, Atomic Energy Centre, Dhaka, BangladeshThe CaFe12O19/MnFe2O4 composites with the hard (CaFe12O19) and soft (MnFe2O4) magnetic phases, were prepared by chemical co-precipitation method. The prepared composites were calcined at three different temperatures to form different phases. The structural, morphological, and magnetic properties of composite were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), room temperature vibrational sample magnetometer (VSM), and transmission electron microscopy (TEM). The presence of the hard and soft phases has been confirmed without any secondary phase from XRD analysis, indicating the formation of composite. The crystallite size is found to be in the range of 24–44 nm calculated by Scherrer’s formula. The TEM revealed hexagonal platelets of CaFe12O19 with spinel MnFe2O4 particles with an average particle size of 48 nm formed at the surface of the CaFe12O19/MnFe2O4 composite. The room temperature magnetic properties of composite were evaluated by employing VSM. The magnetic measurements have displayed enhancement in coercivity and magnetization for CaFe12O19/MnFe2O4, indicating that the composite possessed excellent exchange coupling. The composite’s enhanced energy product ((BH)max) made it highly promising for biomedical applications such as hyperthermia. The exchange-spring coupled magnetic composite was coated with dextran to make it biocompatible, which is necessary for hyperthermia applications. The coating was confirmed using Fourier transform infrared spectroscopy (FTIR). Cytotoxicity tests on Vero cell lines showed that the coated composites had an excellent (>95%) cell survival rate. The hyperthermia heating of composite was measured for different concentrations of composite (0.25, 0.5, 1, 2, and 4 mg/mL) from which specific loss power (SLP) was calculated. From these SLP values, the optimized concentration was identified.https://www.frontiersin.org/articles/10.3389/fchem.2024.1347113/fullcompositemagnetic propertiesexchange-spring couplingspecific loss power (SLP)hyperthermia |
| spellingShingle | Ishtiaque Syed Ishtiaque Syed Sharmin Akter Lima Nandita Deb M. Al-mamun Sheikh Manjura Hoque Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field Frontiers in Chemistry composite magnetic properties exchange-spring coupling specific loss power (SLP) hyperthermia |
| title | Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field |
| title_full | Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field |
| title_fullStr | Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field |
| title_full_unstemmed | Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field |
| title_short | Performance evaluation of dextran-coated CaFe12O19/MnFe2O4 exchange-spring composites for the self-heating properties at radio frequency field |
| title_sort | performance evaluation of dextran coated cafe12o19 mnfe2o4 exchange spring composites for the self heating properties at radio frequency field |
| topic | composite magnetic properties exchange-spring coupling specific loss power (SLP) hyperthermia |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2024.1347113/full |
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