2024年11月1日发(作者：翠海桃)

专利内容由知识产权出版社提供

专利名称：Magneto-optical recording medium

发明人：Hirokane, Junji,Nakayama,

Junichiro,Nakajima, Junsaku,Takahashi, Akira

申请号：EP97106555.2

申请日：19970421

公开号：EP0803870B1

公开日：20100317

摘要：An magneto-optical recording medium includes: a transparent dielectric layer; a

reproduction layer that is in an in-plane magnetization state at room temperature and

changes into a perpendicular magnetization state with a rise in temperature; a non-

magnetic intermediate layer; a recording layer made of a perpendicularly magnetized

film; and a protection layer, the layers being formed one after another in this order. The

recording layer is made of a rare-earth and transition metal alloy, and the rare earth

metal is composed of more than two kinds of rare-earth-metal elements containing Gd.

The information stored in a magnetic recording domain is masked with respect to a part

that is in an in-plane magnetization state. Consequently, recording can be performed with

a less powerful laser beam, and each recording bit can be reproduced independently to

produce high quality signals even if the converged light beam covers a neighboring

recording bit within its radius.

申请人：SHARP KK

地址：JP

国籍：JP

代理机构：Müller, Frithjof E.

更多信息请下载全文后查看

2024年11月1日发(作者：翠海桃)

专利内容由知识产权出版社提供

专利名称：Magneto-optical recording medium

发明人：Hirokane, Junji,Nakayama,

Junichiro,Nakajima, Junsaku,Takahashi, Akira

申请号：EP97106555.2

申请日：19970421

公开号：EP0803870B1

公开日：20100317

摘要：An magneto-optical recording medium includes: a transparent dielectric layer; a

reproduction layer that is in an in-plane magnetization state at room temperature and

changes into a perpendicular magnetization state with a rise in temperature; a non-

magnetic intermediate layer; a recording layer made of a perpendicularly magnetized

film; and a protection layer, the layers being formed one after another in this order. The

recording layer is made of a rare-earth and transition metal alloy, and the rare earth

metal is composed of more than two kinds of rare-earth-metal elements containing Gd.

The information stored in a magnetic recording domain is masked with respect to a part

that is in an in-plane magnetization state. Consequently, recording can be performed with

a less powerful laser beam, and each recording bit can be reproduced independently to

produce high quality signals even if the converged light beam covers a neighboring

recording bit within its radius.

申请人：SHARP KK

地址：JP

国籍：JP

代理机构：Müller, Frithjof E.

更多信息请下载全文后查看