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Magnetic Properties of Co–Sn Substituted Barium-Ferrite Particles for Magnetic Recording

✍ Scribed by Wei, F. L. ;Lu, M. ;Yang, Z.

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
276 KB
Volume
169
Category
Article
ISSN
0031-8965

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✦ Synopsis

In order to improve the margin for operating temperature changes and to achieve high recording performance, Co±Sn substituted Ba-ferrite particles were investigated. It was found that BaFe 12À2x Co x Sn x O 19 particles with x = 1.10 to 1.40 not only have a coercivity suitable for magnetic recording, but also have a very low temperature coefficient of coercivity DH c /DT in the temperature range from 0 to 60 C.

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✍ G.M. Sutariya; R.V. Upadhyay; R.V. Mehta 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 140 KB

Ultrafine particles of \(\mathrm{Mn}\) substituted \(\mathrm{Fe}_{3} \mathrm{O}_{4}\) were synthesized using coprecipitation technique. Particles were coated with oleic acid and colloidally dispersed in kerosene. Magnetic and rheological properties of this magnetic fluid are reported. Results sugges