Magnetic properties and media noise of Co-Ni-P plated disks
- 1 July 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 64 (1) , 270-275
- https://doi.org/10.1063/1.341421
Abstract
Magnetic properties and read-write characteristics of Co-Ni-P plated disks are examined. In-plane coercive force and squareness increase with increasing the thickness of an Ni-P layer which is formed between the substrate layer (Cu-Sn) and Co-Ni-P film. However, media noise increases with thickening of the Ni-P layer. The relationships between magnetic properties and media noise are investigated by measuring rotational hysteresis (Wr) and its integral (RH). As a result, it is found that media noise closely correlates RH values: smaller RH values cause less media noise. This result shows that media noise is dominated by the magnetization process, and magnetic thin film in which the magnetization process occurs through coherent rotation is desirable for magnetic recording media.This publication has 4 references indexed in Scilit:
- Theoretical analysis of magnetic recording media noise.Journal of the Magnetics Society of Japan, 1986
- Measurement of noise in magnetic mediaIEEE Transactions on Magnetics, 1983
- Noise characteristics in plated Co-Ni-P film for high density recording mediumJournal of Applied Physics, 1982
- Studies of a High-Coercivity Electrodeposit Having a Lamellar StructureJournal of Applied Physics, 1961