Presentation Information
[24p-P05-5]Magnetic property analysis and heat generation efficiency of Ni-ferrite nanoparticles by shape change
〇Ryota Abe1, Takeshi Sakamoto1, Yohei Fujita1, Nii Kazune1, Tomomasa Moriwaki2, Hiroki Amano1, Ryo Katsui3, Yu Kusumoto3, Tomoya Shimogama3, Marimo Hasegawa3, Sosuke Yasuzawa3, Yuko Ichiyanagi1,3,4 (1.Grad. Sch. of Sci. and Eng., Yokohama Nat. Univ., 2.Grad. Sch. of Environ and Info., Yokohama Nat. Univ., 3.Fac. of Sci. and Eng., Yokohama Nat. Univ., 4.Grad. Sch. of Sci., Osaka Univ.)
Keywords:
nanoparticles,magnetic anisotropy,magnetic hyperthermia
The anisotropy of magnetic nanoparticles is considered to differ depending on their shape, but the heat generation efficiency is also expected to change. In this study, four types of NiFe2O4 nanoparticles were prepared by applying pressure to the solution in an autoclave vessel to produce spherical and hexahedral shapes with uniform particle size with no inclusion and PEG inclusion respectively, and their magnetic properties and heating efficiency (SAR) were investigated. The results of M-H measurements using a SQUID flux meter show an increase in coercive force and hysteresis area due to shape changes, and the results of temperature rise experiments show an increase in hysteresis loss.