Co/Pt and Co/Pd multilayers as new magneto‐optical recording media (abstract)
| Autor: | Bernardus A. J. Jacobs, P. F. Carcia, Spruit Johannes H M, W. B. Zeper, H. W. van Kesteren |
|---|---|
| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 69:4966-4966 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.348190 |
| Popis: | In this paper we will discuss Co/Pt and, to a lesser extent, Co/Pd multilayers optimized for magneto‐optical storage applications. Perpendicular magnetic anisotropy and square hysteresis loops are achieved for multilayers with a total thickness below about 200 A if they consist of very thin (≂4 A) Co layers alternated with 10–20‐A Pt layers. Multilayer made by evaporation show a high coercivity (≳100 kA/m) and have proven to be suitable as magneto‐optical recording medium. Recently we showed that Co/Pt layers with high coercivity can be made by sputtering as well, if not Ar but Kr is used as sputter gas.1 We will discuss the properties of Co/Pt multilayers in relation to the preparation technique and will present magneto‐optical recording results for both evaporated and sputtered Co/Pt multilayer films. The written domain patterns can be very regular, as observed by scanning magnetic force microscopy, and a CNR as high as 55 dB (1 MHz carrier, 5 m/s, 30 kHz BW) is observed. The good oxidation and corrosio... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|