Magnetic semiconductor element and a magneto-optical read out head
US5229621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | May 26, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/173
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A magnetic semiconductor element formed by joining a magnetostrictive material and a semiconductive material with each other, in which the lattice constant of the semiconductive material is variable by magnetostriction at the interface therebetween; or in which an interface between the two materials is formed by epitaxial growth and the orientation of the magnetostriction is identical to the orientation in which the lattice constant of the semiconductive material varies. Next, a semiconductor laser is so constructed that the interface between the magnetostrictive material and the semiconductive material is disposed in the semiconductor laser and the wavelength and the output of the semiconductor laser are variable by magnetostriction. Further, a method of making a magnetic semiconductor element comprises a step of epitaxially growing the layer of the magnetostrictive material on the layer made of the semiconductive material. Furthermore, a magneto-optical read out head is so constructed that the interface formed by joining the magnetostrictive material and the semiconductive material with each other is disposed in the semiconductor laser constituting a head reading out information …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.