Abstract
Magnetic properties of acicular γ-Fe2O3 particles for magnetic recording media derived from goethite particles are regulated directly by controlling the morphology of goethite particles. The shape and magnetic properties of acicular γ-Fe2O3 by oxidizing weakly alkaline solution are examined by varying conditions: the initial Fe2+ concentration, the neutralization molar ratio in the seed reaction, and the partition of the rate of Fe2+ consumption either by the seed reaction or by the growth. Possible ranges of control are 200-300nm for the particle sizes, and 8 to 14 for the aspect ratio, while the S. D. of the aspect ratio between 2.5 to 5. Consequently, desirable acicular γ-Fe2O3 with a higher SQ and a lower SFD in the hysteresis curve can be synthesized.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Society of Powder Technology, Japan
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
