公开(公告)号：EP0139021B1

公开(公告)日：1990-11-28

申请号：EP84901402.2

申请日：1984-03-30

申请人： SONY CORPORATION

发明人： TAMADA, Hitoshi Sony Corporation ,  KANEKO, Masahiko Sony Corporation ,  OKAMOTO, Tsutomu Sony Corporation ,  YAMADA, Toshiro Sony Corporation

IPC分类号： G11C13/06 ,  G11C11/14 ,  G11C19/08 ,  G11B5/02 ,  G11B11/10

CPC分类号： G11B5/00 ,  G11B5/09 ,  G11B13/045 ,  G11C11/14 ,  G11C13/06 ,  G11C19/0833 ,  G11C19/0858

摘要： A region (21) of a different magnetic energy from other portions is formed in a soft-magnetic film (1b) of which the axis of easy magnetization is perpendicular to the film surface, and which has been unidirectionally magnetized by the application of an external bias magnetic field. A cylindrical magnetic domain b magnetized in the direction opposite to that of the film (1b) by irradiation of the film surface with a light beam is formed at a first stable position within the region (21), and is moved to a second cylindrical magnetic domain c.b by irradiation with the light beam or to a second stable position by utilizing a temperature gradient, to enable stable recording and reading operations, and provide a reliable calculation function.

公开(公告)号：EP0985947A1

公开(公告)日：2000-03-15

申请号：EP99910673.5

申请日：1999-03-24

申请人： Sony Corporation

发明人： YAMADA, Masahiro Sony Corporation ,  DOMUKI, Toru Sony Corporation ,  TAMADA, Hitoshi Sony Corporation

IPC分类号： G02F1/03

CPC分类号： G02F1/03 ,  G02F1/3558

摘要： Polarization inversion domains 2 are irregularly formed in a ferroelectric substrate 3 constituting an electro-optical element 1 at least in the propagation direction of a light beam A. An A.C. current signal is applied between electrodes 4 and 5. It is thereby arranged to disturb the phase of each of the light rays constituting a light beam whose coherent characteristic is high, such as a laser light or the like, and thereby to easily obtain the light beam whose coherent characteristic has been decreased.

摘要翻译： 极化反转畴2至少在光束A的传播方向上构成电光元件1的铁电衬底3中不规则地形成。在电极4和5之间施加AC电流信号。由此， 构成相干特性高的光束（例如激光等）的每个光线的相位，从而容易地获得其相干特性已经降低的光束。

公开(公告)号：EP0139021A1

公开(公告)日：1985-05-02

申请号：EP84901402.2

申请日：1984-03-30

申请人： SONY CORPORATION

发明人： TAMADA, Hitoshi Sony Corporation ,  KANEKO, Masahiko Sony Corporation ,  OKAMOTO, Tsutomu Sony Corporation ,  YAMADA, Toshiro Sony Corporation

IPC分类号： G11C13/06 ,  G11C11/14 ,  G11C19/08 ,  G11B5/02 ,  G11B11/10

CPC分类号： G11B5/00 ,  G11B5/09 ,  G11B13/045 ,  G11C11/14 ,  G11C13/06 ,  G11C19/0833 ,  G11C19/0858

摘要： A region (21) of a different magnetic energy from other portions is formed in a soft-magnetic film (1b) of which the axis of easy magnetization is perpendicular to the film surface, and which has been unidirectionally magnetized by the application of an external bias magnetic field. A cylindrical magnetic domain b magnetized in the direction opposite to that of the film (1 b) by irradiation of the film surface with a light beam is formed at a first stable position within the region (21), and is moved to a second cylindrical magnetic domain c.b by irradiation with the light beam or to a second stable position by utilizing a temperature gradient, to enable stable recording and reading operations, and provide a reliable calculation function.

摘要翻译： 单向磁化的软膜与其表面垂直的磁化轴一起使用，并且通过激光照射和温度定义变化的能量区域移动所需的畴。 梯度。 在石榴石基材上形成2.0微米厚（TmBi）3（FeGa）5012软膜，深度为500埃的凹陷区域（21）由6微米方形阶梯面（22）限定。 信息气泡（b）在凹陷区域内的稳定点（A，B）之间移动或转移到另一个轨道，以通过连续激光照射来产生提示气泡（c.b.）。