Magnetic recording properties of SmCo5
- 1 September 1978
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 14 (5) , 752-754
- https://doi.org/10.1109/tmag.1978.1059899
Abstract
Extremely high coercivity magnetic recording materials are being evaluated for use in secure magnetic documents. Commercially available SmCo5particles were milled in a standard binder solution, and coated onto polyester film, to make experimental magnetic recording tapes. Selected magnetic properties and low-bit-density recording characteristics were determined for two SmCo5tapes with intrinsic coercivities of 8.9 and 11.3 kOe, and compared with two barium ferrite tapes with coercivities of 4.1 and 5.2 kOe. Both SmCo5tapes had too high coercivity for an iron-cobalt core head to record. The SmCo5tapes had poorer signal output and alteration resistance than the lower coercivity barium ferrite tapes.Keywords
This publication has 3 references indexed in Scilit:
- Reversal mechanism in copper-modified cobalt-rare-earthsIEEE Transactions on Magnetics, 1976
- The effects of record head saturation on digital outputIEEE Transactions on Magnetics, 1976
- Relation between coercive force and microstructure of sintered SmCo5 permanent magnetsJournal of Applied Physics, 1976