Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles
Zn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>x</sub>Fe<sub>2−x</sub>O<sub>4</sub> (0 ≤ x ≤ 0.4) nanoparticles were synthesized using a hydrothermal technique. The obtained magnetic nanoparticles (MNPs) exhibited a spinel structure, where the latt...
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MDPI AG
2023-07-01
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| Series: | Magnetochemistry |
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| Online Access: | https://www.mdpi.com/2312-7481/9/7/181 |
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| author | Xiaogang Yu Renpeng Yang Chengwei Wu Bo Liu Wei Zhang |
| author_facet | Xiaogang Yu Renpeng Yang Chengwei Wu Bo Liu Wei Zhang |
| author_sort | Xiaogang Yu |
| collection | DOAJ |
| description | Zn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>x</sub>Fe<sub>2−x</sub>O<sub>4</sub> (0 ≤ x ≤ 0.4) nanoparticles were synthesized using a hydrothermal technique. The obtained magnetic nanoparticles (MNPs) exhibited a spinel structure, where the lattice constant decreased with the Cr<sup>3+</sup> ion content. The doping of Cr<sup>3+</sup> ion (x = 0.1) increased the specific saturation magnetization to 46.4 emu/g but decreased to 20.0 emu/g with the further increase in the Cr<sup>3+</sup> ion content to x = 0.4. The decrement in Curie temperature was ascribed to the weakened super-exchange interaction between the metal ions located at <i>A</i>-sites and <i>B</i>-sites, which arose from the doping of the Cr<sup>3+</sup> ion. The T<sub>2</sub>-weighted images gradually darkened with the increase in Zn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>0.1</sub>Fe<sub>1.9</sub>O<sub>4</sub> nanoparticles concentration, suggesting that the nanoparticles can enhance the image contrast. Zn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>x</sub>Fe<sub>2−x</sub>O<sub>4</sub> (0 ≤ x ≤ 0.4) nanoparticles were able to heat the agar phantom to the hyperthermia temperature under the safe alternating magnetic field, which showed their potential in the magnetic induction hyperthermia. |
| first_indexed | 2024-03-11T00:53:41Z |
| format | Article |
| id | doaj.art-45e07e33e9fe403b946c653bc14d7f2c |
| institution | Directory Open Access Journal |
| issn | 2312-7481 |
| language | English |
| last_indexed | 2024-03-11T00:53:41Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Magnetochemistry |
| spelling | doaj.art-45e07e33e9fe403b946c653bc14d7f2c2023-11-18T20:13:40ZengMDPI AGMagnetochemistry2312-74812023-07-019718110.3390/magnetochemistry9070181Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite NanoparticlesXiaogang Yu0Renpeng Yang1Chengwei Wu2Bo Liu3Wei Zhang4State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaSchool of Biomedical Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaZn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>x</sub>Fe<sub>2−x</sub>O<sub>4</sub> (0 ≤ x ≤ 0.4) nanoparticles were synthesized using a hydrothermal technique. The obtained magnetic nanoparticles (MNPs) exhibited a spinel structure, where the lattice constant decreased with the Cr<sup>3+</sup> ion content. The doping of Cr<sup>3+</sup> ion (x = 0.1) increased the specific saturation magnetization to 46.4 emu/g but decreased to 20.0 emu/g with the further increase in the Cr<sup>3+</sup> ion content to x = 0.4. The decrement in Curie temperature was ascribed to the weakened super-exchange interaction between the metal ions located at <i>A</i>-sites and <i>B</i>-sites, which arose from the doping of the Cr<sup>3+</sup> ion. The T<sub>2</sub>-weighted images gradually darkened with the increase in Zn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>0.1</sub>Fe<sub>1.9</sub>O<sub>4</sub> nanoparticles concentration, suggesting that the nanoparticles can enhance the image contrast. Zn<sub>0.6</sub>Mg<sub>0.4</sub>Cr<sub>x</sub>Fe<sub>2−x</sub>O<sub>4</sub> (0 ≤ x ≤ 0.4) nanoparticles were able to heat the agar phantom to the hyperthermia temperature under the safe alternating magnetic field, which showed their potential in the magnetic induction hyperthermia.https://www.mdpi.com/2312-7481/9/7/181magnetic nanoparticlesCurie temperaturehyperthermia |
| spellingShingle | Xiaogang Yu Renpeng Yang Chengwei Wu Bo Liu Wei Zhang Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles Magnetochemistry magnetic nanoparticles Curie temperature hyperthermia |
| title | Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles |
| title_full | Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles |
| title_fullStr | Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles |
| title_full_unstemmed | Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles |
| title_short | Effect of Cr<sup>3+</sup> Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles |
| title_sort | effect of cr sup 3 sup doping on magnetic properties of zn mg ferrite nanoparticles |
| topic | magnetic nanoparticles Curie temperature hyperthermia |
| url | https://www.mdpi.com/2312-7481/9/7/181 |
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