Magnetometry and Hyperthermia Study of Magnetic Fluid Preparation UNIMAG

• 作者: Anatoli M. Akhalkatsi Besiki V. Surguladze Davit L. Japaridze Dimitri M. Daraselia Giorgi N. Pichkhaia Grigor I. Mamniashvili Solomon V. Mikeladze Тatiana О. Gegechkori
• 来源期刊: 凝固态物理国际期刊(英文)
• 学科: 医学
• 关键词: MAGNETIC NANOPARTICLES SUSPENSION HYPERTHERMIA MAGNETOMETRY NMR
• 年，卷（期）: ngtwlgjqkyw_2014,（1）
• 页码范围: 6-12
• 页数: 7页
• 分类号: R73

摘要

We investigated the hyperthermal and magnetic properties of the stable magnetic suspension of magnetite nanoparticles. With this purpose in mind, we designed a low-frequency oscillator, 300 W, 300 KHz. A sample of the magnetic suspension was placed in the induction coil and heated up to 55°C for 30 minutes. Based on the results of measurements of transverse susceptibility, we can infer that the suspension was superparamagnetic at room temperature and transformed into the magnetic state at nitrogen temperature. Comparing the obtained experimental results with the literature data, we assessed the mean size of nanoparticles, which made up about 10 nm. Computer simulation assessment on the basis of magnetization curve gives close results.