KR960011889A

KR960011889A - Short-wavelength magneto-optical disk

Info

Publication number: KR960011889A
Application number: KR1019940025198A
Authority: KR
Inventors: 안용진
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1994-09-30
Filing date: 1994-09-30
Publication date: 1996-04-20

Abstract

본 발명은 광자기 효과가 우수한 단파장용 광자기 기록매체에 관한 것으로, 더욱 구체적으로는 기판위에 적층되는 자성막인 기록막을 커(Kerr)회전각이 우수한 재생층과, 기록시에 재생층의 자구의 안정성을 증가시키고 보조층, 및 높은 수직자기 이방성을 갖는 기록층으로서 각각 분리적층 형성시키므로써 단파장 레이터(파장이 532nm 이하)를 사용하는 경우에도 정보의 기록시 기록감도가 향상되어 고밀도 광자기 기록이 가능하도록 한 것에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a short wavelength magneto-optical recording medium having an excellent magneto-optical effect. More particularly, the present invention relates to a recording layer which is a magnetic film stacked on a substrate, having a reproducing layer having excellent Kerr rotation angle, and a magnetic domain of a reproducing layer during recording. By increasing the stability of the secondary layer and separately forming the auxiliary layer and the recording layer having high perpendicular magnetic anisotropy, the recording sensitivity is improved during recording of information even when using a short wavelength radar (wavelength is 532 nm or less). It is about making this possible.

Description

Short-wavelength magneto-optical disk

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 의한 광자기 디스크의 종단면도,2 is a longitudinal sectional view of a magneto-optical disk according to the present invention;

제3도는 기록층의 두께와 큐리온도와의 관계를 나타낸 그래프.3 is a graph showing the relationship between the thickness of the recording layer and the Curie temperature.

Claims

In forming a short-wavelength magneto-optical recording medium, a reproducing layer 3A for reproducing recorded information as a recording film 3 laminated on a substrate 1 forming a magneto-optical disk, and a stable micro earth are formed. Separated into a recording layer 3C for recording data, and an auxiliary layer 3B stacked between the reproduction layer 3A and the recording layer 3C to increase the stability of the magnetic domain of the reproduction layer 3A when recording information. A short wavelength magneto-optical disk characterized by being laminated.

The relationship between the thickness t ₁ of the reproduction layer 3A, the thickness t ₂ of the auxiliary layer 3B, and the thickness t ₃ of the recording layer 3C is 0.7 ≦ (t _1). _{_{+ t 2) / t 3 ≤1.0}} , + 150A, t 2 ≤t 1 ≤t 2 + 150Å, 0Å <t 2 ≤100Å short wavelength for a magneto-optical disk, comprising a step of satisfying.

The relationship between the coercive force Hc ₁ of the reproduction layer 3A, the coercive force Tc ₁ of the auxiliary layer 3B, and the coercive force Hc ₃ of the recording layer 3C is Hc ₃ > Hc _2. > Short-wavelength magneto-optical disk characterized by satisfying Hc ₁ .

The method of claim 1, wherein the relationship between the Curie temperature (Tc ₀₃₎ of said reproduction layer (3A) Curie temperature (Tc _1), the auxiliary layer (3B) the Curie temperature (Tc _2), recording layer (3C) of the Tc ₁ ? T ₂ ? A short-wavelength magneto-optical disk characterized by satisfying Tc ₃ .

※ Note: It is to be disclosed based on the initial application.