KR960030145A

KR960030145A - Short wavelength magneto-optical recording media

Info

Publication number: KR960030145A
Application number: KR1019950001799A
Authority: KR
Inventors: 황인오; 홍현창; 안용진
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-01-28
Filing date: 1995-01-28
Publication date: 1996-08-17

Abstract

본 발명은 단파장용 광자기 디스크에 관한 것으로서, 좀 더 상세하게는 기판상에 유전체막, 기록막, 절연막, 및 반사막이 순차적으로 적층된 광자기 기록매체에 있어서, 상기 기록막을 NdTbFeCo 또는 GdFeCo으로 구성된 재생층 및 회토류-리치 타입의 NdTbFeCo로 구성된 기록층으로 형성시켜 기록재생 싸이클 반복후에도 커회전각 및 보자력의 감소가 거의 나타나지 않으며, 기록자구의 크기에 있어서도 거의 변화가 없는 광자기 기록 매체에 관한 것이다.The present invention relates to a short-wavelength magneto-optical disk, and more particularly, to an optical-magnetic recording medium in which a dielectric film, a recording film, an insulating film, and a reflective film are sequentially stacked on a substrate, wherein the recording film is composed of NdTbFeCo or GdFeCo. The optical layer is formed of a recording layer composed of a reproducing layer and a rare earth-rich type NdTbFeCo, which shows little reduction in Kerr rotation angle and coerciveness even after repeated recording and reproducing cycles, and hardly changes in the size of the recording domain. will be.

Description

Short wavelength magneto-optical recording media

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 광자기 기록 매체를 개략적으로 도시한 단면도, 제3도는 본 발명 및 종래의 기술에 따른 광자기 기록 매체의 기록/소거 싸이클에 대한 큐리온도(Curie temperature, Tc)의 변화를 나타낸 그래프, 제4도는 본 발명 및 종래의 기술에 따른 광자기 기록 매체의 기록/소거 싸이클에 대한 기록파워의 변화를 나타낸 그래프.2 is a cross-sectional view schematically showing a magneto-optical recording medium according to the present invention, and FIG. 3 is a change in Curie temperature (Tc) for the recording / erasing cycle of the magneto-optical recording medium according to the present invention and the related art. 4 is a graph showing a change in recording power for a recording / erasing cycle of a magneto-optical recording medium according to the present invention and the related art.

Claims

In a magneto-optical recording medium in which a dielectric film, a recording film, an insulating film, and a reflective film are sequentially stacked on a substrate, the recording film is formed of a reproducing layer composed of NdTbFeCo or GdFeCo and a recording layer composed of a rare earth-rich type NdTbFeCo. A short wavelength magneto-optical recording medium, characterized in that.

The short wavelength magneto-optical recording medium according to claim 1, wherein the reproduction layer has a thickness of 50 to 120 microseconds.

The short-wavelength magneto-optical recording medium according to claim 1, wherein the recording layer has a thickness of 100 to 150 microseconds.

The method of claim 1, wherein the regenerated layer is Nd _a Tb _b (Fe ₇₅ Co ₂₅ ) _100-ab , 20 <a <27, 10 <b <17, or Cd _C (Fe ₇₅ Co ₂₅ ) _100-c , 17 A short-wavelength magneto-optical recording medium, characterized by < c < 24.

The short-wavelength magneto-optical recording medium according to claim 1, wherein the recording layer is composed of Nd _X Tb _Y (Fe ₇₅ Co ₂₅ ), 8 <X <15, and <23 <y <30.

※ Note: The disclosure is based on the initial application.