Production of Co-Ti ferrite nanoparticles for use as agents in hyperthermia treatment

被引：14
|
作者：
Shigeoka, Daiki [1 ]
Katayanagi, Hikaru [1 ]
Moro, Yuki [1 ]
Kimura, Shinji [1 ]
Mashino, Toshiyuki [1 ]
Ichiyanagi, Yuko [1 ]
机构：
[1] Yokohama Natl Univ, Grad Sch Engn, Dept Phys, Yokohama, Kanagawa 2408501, Japan
来源：
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) | 2010年 / 200卷
关键词：
D O I：
10.1088/1742-6596/200/12/122002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Co-Ti ferrite (Co1+xTixFe2-2xO4, 0.2 <= x <= 0.5) nanoparticles with average diameters ranging from 6 to 12 nm were produced by using our novel wet chemical method. The crystal structures and magnetic properties of the obtained samples were investigated by X-ray diffraction and superconducting quantum interference device (SQUID) magnetometer measurements. DC magnetization measurements showed that the coercive force H-c and saturation magnetization M-s decreased as the composite parameter x increased. This phenomenon suggests that Ti4+ ions located on B-sites weaken the superexchange interaction between A and B sites. For x = 0.3, the value of H-c decreased drastically. The AC magnetic susceptibility of these samples was also investigated, and it was concluded that the sample with a diameter of 12 nm and composition given by x = 0.3 is the most appropriate sample for use as an agent in hyperthermia treatment.
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页数：5
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