Barium ferrite is a well-characterized and important permanent magnetic material. Applications include widespread use in motors, magnetic recording devices, and audio devices. The traditional synthesis of barium ferrite involves solid-state reactions facilitated by high temperature annealing of over 1000° C. In synthesis of barium ferrite nanoparticles, such high temperatures induce sintering of particles, leading to poor control of particle size and poor dispersibility. The development of monodisperse barium ferrite nanoparticles may be beneficial for colloidal magnetoresistance, as well as in exchange-spring materials. Herein, we describe our efforts to develop new chemical and physical methods to lower the annealing temperature and retain dispersibility.

Synthesis of barium ferrite nanoparticles for new magnetic materials

2019 Fall National Meeting

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