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    • 3. 发明授权
    • Magnetic semiconductor element and a magneto-optical read out head
    • 磁性半导体元件和磁光读出头
    • US5229621A
    • 1993-07-20
    • US888422
    • 1992-05-26
    • Matahiro KomuroYuzo KozonoMasanobu Hanazono
    • Matahiro KomuroYuzo KozonoMasanobu Hanazono
    • H01L27/22
    • H01S5/0607B82Y20/00G11B11/10543H01S2301/173H01S5/34313
    • 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 recorded in a magnetic recording medium.
    • 通过将磁致伸缩材料和半导体材料彼此接合而形成的磁性半导体元件,其中半导体材料的晶格常数可通过它们之间的界面处的磁致伸缩而变化; 或者其中通过外延生长形成两种材料之间的界面,并且磁致伸缩的取向与半导体材料的晶格常数变化的取向相同。 接下来,半导体激光器被构造成使得磁致伸缩材料和半导体材料之间的界面设置在半导体激光器中,半导体激光器的波长和输出通过磁致伸缩而变化。 此外,制造磁性半导体元件的方法包括在由半导体材料制成的层上外延生长磁致伸缩材料层的步骤。 此外,磁光读出头被构造成使得通过将磁致伸缩材料和半导体材料彼此接合而形成的界面设置在半导体激光器中,该半导体激光器构成磁头读出记录在磁记录介质中的信息。