MnAlGe Films for Magneto-Optic Applications
- 15 March 1971
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 42 (4) , 1704-1705
- https://doi.org/10.1063/1.1660401
Abstract
MnAlGe is a uniaxial ferromagnetic compound with a saturation 4πMs of 3600 G, and Curie temperature of 245°C. We have studied polycrystalline thin films of this compound formed on various substrates by getter sputtering. The optimum substrate temperature to obtain films with uniform magnetic properties was 500°C. Films prepared at this temperature have a substantial component of magnetization normal to the plane of the substrate, and a coercive force of approximately 2000 Oe. Information was written into films approximately 700‐Å thick by Curie point writing or with a fine permanent magnet wire, and read with good optical contrast by means of the polar Faraday effect. The relatively low Curie temperature is advantageous in reducing the power required for Curie point writing for magneto‐optic memory or holographic applications.This publication has 8 references indexed in Scilit:
- Promise of Optical MemoriesJournal of Applied Physics, 1970
- Promise of Magneto-Optic Storage Systems Compared to Conventional Magnetic TechnologyJournal of Applied Physics, 1970
- High-Coercive-Force Rare-Earth Alloy Films by Getter SputteringJournal of Applied Physics, 1969
- Magnetic Structure of MnAlGeJournal of Applied Physics, 1969
- Magneto-Optical RecordingJournal of Applied Physics, 1969
- MnBi Thin Films: Physical Properties and Memory ApplicationsJournal of Applied Physics, 1968
- Influence of Milling upon the Magnetic Properties of the Intermetallic Compound MnAlGeJournal of Applied Physics, 1963
- New Magnetic Ternary Compound with a High Crystalline AnisotropyJournal of Applied Physics, 1961