期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 260, 期 -, 页码 34-38出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2018.01.001
关键词
Magnetic nanoparticles; Hyperthermia; Self-controlled inductive heating; Self-regulating magnetic hyperthermia
资金
- CNPq [465448/2014-3]
- CAPES
- FAPERJ
- PROPPI-UFF
- FEDER through the COMPETE 2020 Programme
- National Funds through FCT - Portuguese Foundation for Science and Technology [UID/CTM/50025/2013]
La0.75Sr0.25MnO3 nanoparticles with average diameter close to 20.9 nm were synthesized using a sol-gel method. Measurements showed that the heating process stops at the blocking temperaturesignificantly below the Curie temperature. Measurements of Specific Absorption Rate (SAR) as a function of AC magnetic field revealed a superquadratic power law, indicating that, in addition to usual Neel and Brown relaxation, the hysteresis also plays an important role in the mechanism of heating. The ability to control the threshold heating temperature, a low remanent magnetization and a low field needed to achieve the magnetic saturation are the advantages of this material for therapeutic magnetic hyperthermia.
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