公开(公告)号：WO1998002877A1

公开(公告)日：1998-01-22

申请号：PCT/JP1997002419

申请日：1997-07-11

Applicant: HITACHI MAXELL, LTD. ,  SANYO ELECTRIC CO., LTD. ,  OONUKI, Satoru ,  YOSHIHIRO, Masafumi ,  NAGAI, Nobuyuki ,  SHIMAZAKI, Katsusuke ,  AWANO, Hiroyuki ,  SHIRAI, Hiroshi ,  OHTA, Norio ,  SUMI, Satoshi ,  YAMAGUCHI, Atsushi

Inventor： HITACHI MAXELL, LTD. ,  SANYO ELECTRIC CO., LTD.

IPC: G11B11/10

CPC classification number: G11B11/10515 ,  G11B7/00745 ,  G11B11/10508 ,  G11B11/10521 ,  G11B11/10528 ,  G11B11/10578 ,  G11B11/10584 ,  G11B11/10593 ,  G11B11/10595 ,  G11B27/19 ,  G11B27/3027

Abstract: A magneto-optical recording medium (11) has a second auxiliary magnetic film (4), a first auxiliary magnetic film (5) and a magneto-optical recording film (6) in this order from the laser beam applied side. If the temperatures of the first and second auxiliary magnetic films (4 and 5) exceed their critical temperatures TCR1 and TCR2, the magnetization of the auxiliary magnetic films is changed from the surface magnetization to the vertical magnetization. The Curie points TC0, TC1 and TC2 of the magneto-optical recording film (6), the first auxiliary magnetic film (4) and the second auxiliary magnetic film (5) and the critical temperatures TCR1 and TCR2 satisfy the relations room temperature

Abstract translation: 从激光束施加侧开始，磁光记录介质（11）具有第二辅助磁膜（4），第一辅助磁膜（5）和磁光记录膜（6）。 如果第一和第二辅助磁膜（4和5）的温度超过它们的临界温度TCR1和TCR2，则辅助磁膜的磁化从表面磁化转变为垂直磁化。 磁光记录膜（6），第一辅助磁性膜（4）和第二辅助磁性膜（5）的居里点TC0，TC1和TC2以及临界温度TCR1和TCR2满足关系室温

公开(公告)号：WO2006118677A4

公开(公告)日：2011-12-22

申请号：PCT/US2006009949

申请日：2006-03-17

Applicant: UNIV TOLEDO ,  LUKASZEW ROSA A

Inventor： LUKASZEW ROSA A

IPC: G11B5/66 ,  C23C14/14 ,  G11B5/65 ,  G11B5/708

CPC classification number: G11B11/10593 ,  G11B5/653 ,  G11B5/7315 ,  G11B11/10582 ,  G11B11/10584 ,  H01F1/06 ,  H01F10/007 ,  H01F10/123

Abstract: A highly anisotropic magnetic composition which exhibits nano-regions of perpendicular magnetization, a method for making, and articles made therewith are disclosed.

Abstract translation: 公开了表现出垂直磁化的纳米区域的高度各向异性的磁性组合物，制造方法以及制造的制品。

公开(公告)号：WO2004038717A1

公开(公告)日：2004-05-06

申请号：PCT/JP2002/011179

申请日：2002-10-28

Applicant: 富士通株式会社 ,  田中 努 ,  栗田 亮

Inventor： 田中 努 ,  栗田 亮

IPC: G11B11/105

CPC classification number: G11B11/10578 ,  G11B11/10582 ,  G11B11/10584 ,  G11B11/10593

Abstract: A magneto-optical recording medium forming method. Three magnetic films of different compositions are laminated on a substrate via at least a heat radiation layer. A dielectric film of a predetermined film thickness is formed on these structures. The magnetic film in an area not recording any information is nitrided, and a material forming the dielectric film is further laminated on these structures.

Abstract translation: 磁光记录介质形成方法。 至少通过热辐射层将三种不同组成的磁性薄膜层压到基底上。 在这些结构上形成预定膜厚的电介质膜。 在不记录任何信息的区域中的磁性膜被氮化，并且形成电介质膜的材料进一步层压在这些结构上。

公开(公告)号：WO2004017317A1

公开(公告)日：2004-02-26

申请号：PCT/JP2002/008252

申请日：2002-08-13

Applicant: 富士通株式会社 ,  細川 哲夫

Inventor： 細川 哲夫

IPC: G11B11/105

CPC classification number: G11B11/10591 ,  G11B11/10515 ,  G11B11/10593

Abstract: A magneto-optical recording medium comprising a substrate, a first recording layer mainly consisting of Tb and FeCo deposited on the substrate, dominant in compensation composition or transition metal at room temperature, and exhibiting perpendicular magnetization, and a second recording layer provided on the first recording layer, having compensation temperature of at least 100 °C, dominant in rare earth element at room temperature, and exhibiting perpendicular magnetization. Inequalities 60 °C Hc2.t2 are preferably satisfied, where Tc1 and Tc2 are Curie temperature of the first and second recording layers, Hc1 and Hc2 are the coercive force at room temperature, and t1 and t2 are film thickness.

Abstract translation: 一种磁光记录介质，包括基板，主要由沉积在基板上的Tb和FeCo组成的第一记录层，在补偿组成或室温下的过渡金属中占优势，呈现垂直磁化，第二记录层设置在第一 记录层，补偿温度至少为100℃，在室温下在稀土元素中占主导地位，呈现垂直磁化强度。 其中Tc1和Tc2是第一和第二记录层的居里温度，Hc1和Hc2是室温下的矫顽力，t1和t2的温度不同于60℃ Hc2.t2 t2是膜厚度。

公开(公告)号：WO2003083853A1

公开(公告)日：2003-10-09

申请号：PCT/KR2003/000625

申请日：2003-03-28

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  KIM, Joo-Ho ,  TOMINAGA, Junji

Inventor： KIM, Joo-Ho ,  TOMINAGA, Junji

IPC: G11B7/24

CPC classification number: G11B7/00454 ,  B82Y10/00 ,  G11B7/24065 ,  G11B7/243 ,  G11B7/257 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10528 ,  G11B11/10584 ,  G11B11/10593 ,  G11B11/10597

Abstract: A phase change and/or magneto-optical recording method using laser induced reaction and diffraction in a recording layer and a dielectric layer of a recording medium, a recording medium recorded on using the method, and a recording and reproducing apparatus for the recording medium are provided. The phase change recording method involves changing absorption coefficients of optical constants of a recording layer and a dielectric layer of a recording medium by laser induced reaction and diffusion. The magneto-optical recording method involves changing the magnetization direction in a recording layer while the recording layer and a dielectric layer of a recording medium are irradiated with laser to induce reaction and diffusion therein. A recording method based on the physical properties of protruding record marks formed by laser induced reaction and diffusion in a recording layer and a dielectric layer is also provided.

Abstract translation: 在记录介质的记录层和电介质层中使用激光诱导反应和衍射的相变和/或磁光记录方法，使用该方法记录的记录介质以及记录介质的记录和再现装置， 提供。 相变记录方法包括通过激光诱导的反应和扩散来改变记录层和介质层的光学常数的吸收系数。 磁光记录方法包括改变记录层中的磁化方向，同时用激光照射记录介质层和记录介质的介电层以在其中引起反应和扩散。 还提供了基于由记录层和电介质层中的激光诱导反应和扩散形成的突出记录标记的物理性质的记录方法。

公开(公告)号：WO2002077987A1

公开(公告)日：2002-10-03

申请号：PCT/JP2002/002923

申请日：2002-03-26

Applicant: 日立マクセル株式会社 ,  粟野 博之 ,  関根 正樹 ,  谷 学 ,  今井 奨 ,  井上 和子 ,  鈴木 芳和 ,  國府田 安彦 ,  石崎 修 ,  島崎 勝輔

Inventor： 粟野 博之 ,  関根 正樹 ,  谷 学 ,  今井 奨 ,  井上 和子 ,  鈴木 芳和 ,  國府田 安彦 ,  石崎 修 ,  島崎 勝輔

IPC: G11B11/105

CPC classification number: G11B11/10515 ,  G11B11/10584 ,  G11B11/10593

Abstract: A magnetooptic recording medium comprising a recording layer (5), an intermediate layer (4) and a reproducing layer (3). The reproducing layer (3) is formed from a rear-earth metal-dominant rear-earth transition metal alloy, and the intermediate layer (4) and the recording layer (5) are formed from a transition metal-dominant rear-earth transition metal alloy. The intermediate layer (4), providing an in-plane magnetization at at least 140

Abstract translation: 包括记录层（5），中间层（4）和再现层（3）的磁光记录介质。 再生层（3）由背土金属主导的后土过渡金属合金形成，中间层（4）和记录层（5）由过渡金属主导的后土过渡金属 合金。 在至少140℃提供面内磁化的中间层（4）在再现时屏蔽与记录层（5）和再现层（3）之间的交换相互作用的粘合。 中间层（4）的磁畴与再现层（5）的磁畴之间的静电斥力将转移到再现层（3）上的磁畴（3A）扩大到最小磁畴直径的尺寸。 扩展磁畴的再现将提供具有放大强度的再现信号而不发生重影信号。

公开(公告)号：WO2002065465A1

公开(公告)日：2002-08-22

申请号：PCT/JP2001/001048

申请日：2001-02-14

Applicant: 富士通株式会社 ,  杉本利夫 ,  玉野井 健

Inventor： 杉本利夫 ,  玉野井 健

IPC: G11B11/105

CPC classification number: G11B11/10593 ,  G11B11/10591 ,  Y10T428/12465 ,  Y10T428/12896 ,  Y10T428/12986 ,  Y10T428/24942

Abstract: A magnetooptic recording medium in which recorded information can be read out from an area smaller than a beam spot by irradiating the medium with a light beam while applying an external field during reproduction comprises a magnetic recording layer for recording/holding information, a magnetic reproduction layer provided on the magnetic recording layer on the incident side of light beam, a nonmagnetic layer provided on the magnetic recording layer on the side opposite to the magnetic reproduction layer, and a magnetic assist layer provided on the nonmagnetic layer. The magnetic assist layer has a coercive force weaker than the external field being applied while recording or reproducing information.

Abstract translation: 一种磁光记录介质，其中通过在再现期间施加外部场的同时用光束照射介质，可以从小于束斑的区域读出记录信息，包括用于记录/保存信息的磁记录层，磁性再现层 设置在光束入射侧的磁记录层上，设置在与磁性再生层相反一侧的磁记录层上的非磁性层和设置在非磁性层上的磁辅助层。 磁辅助层在记录或再现信息时具有弱于施加外部场的矫顽力。

公开(公告)号：WO99035644A1

公开(公告)日：1999-07-15

申请号：PCT/JP1999/000065

申请日：1999-01-12

IPC: G11B7/007 ,  G11B7/135 ,  G11B11/105 ,  G11B11/10

CPC classification number: B82Y10/00 ,  G11B7/1372 ,  G11B7/24082 ,  G11B11/10515 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/1058 ,  G11B11/10584 ,  G11B11/10593

Abstract: A device for reproduction from a magnetooptic disk (751) comprises a swing arm, on one end of which is mounted a magnetooptic head that includes a slider (914) and a solid-state immersion lens (772). A photodetector system P12 is provided on the other end of the arm. The magnetooptic disk (751) includes a recording layer, and a reproduction layer or auxiliary magnetic layer in which horizontal magnetization is turned into vertical magnetization when a critical temperature is exceeded. During reproduction, the magnetooptic disk is irradiated with low-power modulated light and high-power modulated light synchronously with reproduction clock pulses, while an alternating magnetic field is applied. The low-power light causes a transfer of magnetic domains from the recording layer to the reproduction layer and expansion of the magnetic domains, while the high-power light eliminates the expanded domains. Magnetic domains can be individually reproduced with a high C/N ratio.

Abstract translation: 用于从磁光盘（751）再现的装置包括摆臂，其一端安装有包括滑块（914）和固态浸没透镜（772）的磁光头。 光检测器系统P12设置在臂的另一端。 磁光盘（751）包括记录层以及当超过临界温度时水平磁化变为垂直磁化的再现层或辅助磁性层。 在再现期间，磁光盘用再生时钟脉冲同步地用低功率调制光和大功率调制光照射，同时施加交变磁场。 低功率光引起磁畴从记录层转移到再生层并扩大磁畴，而高功率光消除了扩展域。 可以以高C / N比单独再现磁畴。

公开(公告)号：WO1997022969A1

公开(公告)日：1997-06-26

申请号：PCT/JP1996003716

申请日：1996-12-20

Applicant: HITACHI MAXELL, LTD. ,  OHNUKI, Satoru ,  OHTA, Norio ,  SHIMAZAKI, Katsusuke ,  YOSHIHIRO, Masafumi ,  TAKAO, Hiroki ,  WATANABE, Hitoshi

Inventor： HITACHI MAXELL, LTD.

IPC: G11B11/10

CPC classification number: G11B11/10515 ,  G11B11/10584 ,  G11B11/10593

Abstract: A magneto-optic recording medium (11) includes a second auxiliary magnetic film (4), a first auxiliary magnetic film (5) and a magneto-optic recording film (6) on a substrate (1). The auxiliary magnetic films (4 and 5) change from in-plane magnetization to vertical magnetization at critical temperatures TCR1 and TCR2. Since they have the relation TCR1 > TCR2, the magnetic domain transferred from the magneto-optic recording film (6) to the first auxiliary magnetic film (5) at the time of reproduction is expanded further greater in diameter and is transferred to the second auxiliary magnetic film (4) when the temperature profiles of the auxiliary magnetic films inside an optical spot are utilized. The magnetic domain of the magneto-optic recording film (6) can be expanded and transferred, too, by means of magnetostatic coupling by using a non-magnetic film (9) in place of the first auxiliary magnetic film (5). Pulse reproduction light subjected to power modulation in synchronism with a reproduction clock can be used at the time of reproduction. Even when a very small magnetic domain is recorded, the intensity of an amplified reproduction signal can be detected and excellent C/N can be obtained.

Abstract translation: 磁光记录介质（11）在基板（1）上包括第二辅助磁膜（4），第一辅助磁膜（5）和磁光记录膜（6）。 在临界温度TCR1和TCR2，辅助磁膜（4和5）从面内磁化转变为垂直磁化。 由于它们具有关系TCR1> TCR2，所以在再现时从磁光记录膜（6）转移到第一辅助磁膜（5）的磁畴的直径进一步扩大并被转移到第二辅助 利用光斑内的辅助磁性膜的温度分布时的磁性膜（4）。 也可以通过使用非磁性膜（9）代替第一辅助磁性膜（5）的静磁耦合来扩展和转移磁光记录膜（6）的磁畴。 在再现时可以使用经受与再现时钟同步的功率调制的脉冲再现光。 即使记录非常小的磁畴，也可以检测出放大的再现信号的强度，可以获得优异的C / N。

公开(公告)号：WO1995029483A1

公开(公告)日：1995-11-02

申请号：PCT/JP1995000743

申请日：1995-04-17

Applicant: SONY CORPORATION ,  FUKUMOTO, Atsushi

Inventor： SONY CORPORATION

IPC: G11B11/10

CPC classification number: G11B7/1365 ,  G11B7/00718 ,  G11B11/10543 ,  G11B11/10545 ,  G11B11/10578 ,  G11B11/10584 ,  G11B11/10593

Abstract: A magnetooptic recording medium includes a substrate and a magnetooptic recording film. The substrate is made of a material having a light transmission property, and the magnetooptic recording film is disposed on one side of this substrate. A groove having an optical depth in a range between lambda /8 and lambda /4, where lambda is the wavelength of an incident optical beam, is formed in the surface on which the magnetooptic recording film is disposed. Themagnetooptic recording film is formed in such a manner that a Kerr ellipticity becomes 0 DEG . A magnetooptic recording head includes an optical axis device for correcting the Kerr ellipticity of the recording medium, disposed in an optical path between an objective lens for condensing the optical beams from a light source on the recording film and a polarizing beam splitter.

Abstract translation: 磁光记录介质包括基底和磁光记录膜。 基板由具有透光性的材料制成，并且磁光记录膜设置在该基板的一侧。 在其上设置有磁光记录膜的表面中形成具有在λ/ 8和λ/ 4之间的范围内的光学深度的凹槽，其中λ是入射光束的波长。 磁光记录膜以克尔椭圆率变为0°的方式形成。 磁光记录头包括用于校正记录介质的克尔椭圆率的光轴装置，该光轴装置设置在用于聚集来自记录膜上的光源的光束的物镜和偏振分束器之间的光路中。