期刊
IEEE MAGNETICS LETTERS
卷 1, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMAG.2010.2087315
关键词
Information storage; barium ferrite; dynamic remanent coercivity; particulate recording media; thermal stability
资金
- Information Storage Industry Consortium
- ONR
We used a modified, two-step hydrothermal process to produce worm-shaped antiferromagnetic hematite-barium iron oxide particles and converted them to 25-45 nm spherical ferrimagnetic barium-ferrite (S-BaFe) nanoparticles for high-density magnetic recording media application. Saturation magnetization and coercivity of the S-BaFe nanoparticles were 50.7 emu/g and 4311 Oe, respectively. The thermal stability of KuV/k(B)T approximate to 81 was estimated for the S-BaFe nanoparticles from time-dependent remanent coercivity measurements.
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