Paper
Production of Fe3-xZnxO4 Nanoparticles for Agents in Hyperthermia Treatment
- Authors:
- Y. Ichiyanagi; A. Kurokawa; T. Yanoh; S. Yano; K. Onuma; T. Kondo; K. Miike; T. Miyasaka; M. Hachisu; K. Mori; H. Takeuchi
- Abstract
- Fe3-xZnxO4 (x=0.2, 0.4, 0.6, 0.8, 1) nanoparticle with average diameters of 12 nm was produced by our novel wet chemical method. The crystal structure and magnetic property of the obtained particle were investigated by X-ray diffraction and superconducting quantum interference device (SQUID) magnetometer. Direct current (DC) magnetization measurement showed that the coercive force Hc and saturation magnetization Ms decreased as the composite parameter x increased. This phenomenon suggests that Zn2+ ions located on tetrahedral A sites weaken the superexchange interaction between tetrahedral A and octahedral B sites. From the alternative current (AC) magnetic susceptibility, a sample with composition of x=0.4 is expected for heating by external field. Temperature increase depending on the magnetic field strength and frequency supported that samples with composition of x=0.2, 0.4 were appropriate for use as an agent in hyperthermia treatment.
- Keywords
- Ferrite; Nanoparticle; Hyperthermia; Magnetic Susceptibility
- StartPage
- 201
- EndPage
- 204
- Doi