公开(公告)号：US20060286411A1

公开(公告)日：2006-12-21

申请号：US11475697

申请日：2006-06-26

申请人： Akinori Furuya ,  Hiroshi Yoshikawa ,  Takaya Tanabe ,  Manabu Yamamoto ,  Toshifumi Ohkubo ,  Laurence Bouet ,  Philippe Tailhades ,  Corine Despax-Bonningue ,  Abel Rousset

发明人： Akinori Furuya ,  Hiroshi Yoshikawa ,  Takaya Tanabe ,  Manabu Yamamoto ,  Toshifumi Ohkubo ,  Laurence Bouet ,  Philippe Tailhades ,  Corine Despax-Bonningue ,  Abel Rousset

IPC分类号： G11B5/66 ,  B05D5/12

CPC分类号： G11B7/1275 ,  G11B11/10532 ,  G11B11/10536 ,  G11B11/10543 ,  G11B11/10582 ,  G11B11/10584 ,  G11B11/10586 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/12667 ,  Y10T428/12931 ,  Y10T428/24479 ,  Y10T428/2457 ,  Y10T428/24967 ,  Y10T428/263 ,  Y10T428/31

摘要： This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record and play back data using the magneto-optical recording media. The magneto-optical recording medium of the present invention has a recording layer and a reflective layer on a substrate, and the recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. It is preferable that the layered structure is formed on tracks where data are recorded. The manufacturing method of the present invention comprises the steps of heat treatment in the range of 500-700° C., preferably 600-630° C., after the formation of the recording layer. In the magneto-optical recording and playback device to record and play back data of the present invention, the wavelength of light for recording data is different from that for reading data, which is preferable for a magneto-optical recording medium comprising a garnet ferrite layer.

摘要翻译： 本发明涉及诸如磁光盘和卡片的磁光记录介质，介质的制造方法以及使用磁光记录介质记录和重放数据的磁光记录和重放装置。 本发明的磁光记录介质在基板上具有记录层和反射层，并且记录层具有层状结构，其中至少一个尖晶石铁氧体（或金红石型氧化物或赤铁矿）层至少 一个石榴石铁氧体层堆叠在一起。 优选地，分层结构形成在记录数据的轨道上。 本发明的制造方法包括在形成记录层之后在500-700℃，优选600-630℃的范围内进行热处理的步骤。 在用于记录和再现本发明的数据的磁光记录和重放装置中，用于记录数据的光的波长与用于读取数据的光的波长不同，这对于包括石榴石铁氧体层的磁光记录介质是优选的 。