公开(公告)号：US20050174834A1

公开(公告)日：2005-08-11

申请号：US10987185

申请日：2004-11-15

申请人： Tae-wan Kim ,  Sang-jin Park ,  In-jun Hwang

发明人： Tae-wan Kim ,  Sang-jin Park ,  In-jun Hwang

IPC分类号： H01L27/105 ,  G11C11/15 ,  G11C11/16 ,  H01F10/13 ,  H01F10/32 ,  H01L21/8246 ,  H01L43/08 ,  G11C11/00

CPC分类号： G11C11/16 ,  B82Y25/00 ,  H01F10/135 ,  H01F10/3254 ,  H01F10/3272 ,  H01L43/08

摘要： A magnetic tunneling junction (MTJ) cell includes a free magnetic layer having a low magnetic moment, and a magnetic random access memory (MRAM) includes the MTJ cell. The MTJ cell of the MRAM includes a lower electrode, a lower magnetic layer, a tunneling layer, an upper magnetic layer and an upper electrode, which are sequentially stacked on the lower electrode. The upper magnetic layer includes a free magnetic layer having a thickness of about 5 nm or less. The MTJ cell may have an aspect ratio of about 2 or less, and the free magnetic layer may have a magnetic moment of about 800 emu/cm3 or less.

摘要翻译： 磁性隧道结（MTJ）单元包括具有低磁矩的自由磁性层，磁性随机存取存储器（MRAM）包括MTJ单元。 MRAM的MTJ单元包括依次堆叠在下电极上的下电极，下磁层，隧道层，上磁层和上电极。 上磁性层包括厚度约5nm以下的自由磁性层。 MTJ单元可以具有约2或更小的纵横比，并且自由磁性层可具有约800emu / cm 3以下的磁矩。

公开(公告)号：US10008219B2

公开(公告)日：2018-06-26

申请号：US15153357

申请日：2016-05-12

申请人： Western Digital (Fremont), LLC

发明人： Yuankai Zheng ,  Qunwen Leng

IPC分类号： H01F10/10 ,  G11B5/127 ,  G11B5/31 ,  H01F10/13 ,  C23C14/14 ,  H01F10/32

CPC分类号： G11B5/1272 ,  C23C14/14 ,  G11B5/3143 ,  H01F10/135 ,  H01F10/3218 ,  H01F10/3254 ,  H01F10/3268

摘要： Apparatuses and methods of recording read heads with a multi-layer anti-ferromagnetic (AFM) layer are provided. The AFM layer has gradient Manganese (Mn) compositions. A multi-layer AFM layer comprises a plurality of sub-layers having different Mn compositions. An upper sub-layer has a higher Mn composition than an lower sub-layer. Different types of gases may be used to deposit each sub-layer and the flow of each gas may be adjusted.

公开(公告)号：US20160260447A1

公开(公告)日：2016-09-08

申请号：US15153357

申请日：2016-05-12

申请人： Western Digital (Fremont), LLC

发明人： YUANKAI ZHENG ,  QUNWEN LENG

IPC分类号： G11B5/127 ,  C23C14/14

CPC分类号： G11B5/1272 ,  C23C14/14 ,  G11B5/3143 ,  H01F10/135 ,  H01F10/3218 ,  H01F10/3254 ,  H01F10/3268

摘要： Apparatuses and methods of recording read heads with a multi-layer anti-ferromagnetic (AFM) layer are provided. The AFM layer has gradient Manganese (Mn) compositions. A multi-layer AFM layer comprises a plurality of sub-layers having different Mn compositions. An upper sub-layer has a higher Mn composition than an lower sub-layer. Different types of gases may be used to deposit each sub-layer and the flow of each gas may be adjusted.

摘要翻译： 提供了用多层反铁磁（AFM）层记录读取头的装置和方法。 AFM层具有梯度锰（Mn）组成。 多层AFM层包括具有不同Mn组成的多个子层。 上层具有比下层更高的Mn组成。 可以使用不同类型的气体来沉积每个子层，并且可以调节每种气体的流动。

公开(公告)号：US09361913B1

公开(公告)日：2016-06-07

申请号：US13923991

申请日：2013-06-21

申请人： Western Digital (Fremont), LLC

发明人： Yuankai Zheng ,  Qunwen Leng

IPC分类号： G11B5/31 ,  H01F10/13

CPC分类号： G11B5/1272 ,  C23C14/14 ,  G11B5/3143 ,  H01F10/135 ,  H01F10/3218 ,  H01F10/3254 ,  H01F10/3268

摘要： Apparatuses and methods of recording read heads with a multi-layer anti-ferromagnetic (AFM) layer are provided. The AFM layer has gradient Manganese (Mn) compositions. A multi-layer AFM layer comprises a plurality of sub-layers having different Mn compositions. An upper sub-layer has a higher Mn composition than an lower sub-layer. Different types of gases may be used to deposit each sub-layer and the flow of each gas may be adjusted.

摘要翻译： 提供了用多层反铁磁（AFM）层记录读取头的装置和方法。 AFM层具有梯度锰（Mn）组成。 多层AFM层包括具有不同Mn组成的多个子层。 上层具有比下层更高的Mn组成。 可以使用不同类型的气体来沉积每个子层，并且可以调节每种气体的流动。

公开(公告)号：US4814238A

公开(公告)日：1989-03-21

申请号：US77002

申请日：1987-07-21

申请人： Shinsuke Tanaka ,  Nobutake Imamura ,  Chuichi Ota

发明人： Shinsuke Tanaka ,  Nobutake Imamura ,  Chuichi Ota

IPC分类号： C22C38/00 ,  C22C45/04 ,  G11B7/24 ,  G11B11/10 ,  G11B11/105 ,  G11C13/06 ,  H01F10/12 ,  H01F10/13 ,  H01F10/14

CPC分类号： H01F10/135 ,  G11B11/10586 ,  G11B11/10591 ,  H01F10/137 ,  Y10S428/90

摘要： A magneto-optical recording medium, which comprises a thin film constituted of an amorphous alloy (R.sub.x TM.sub.1-x).sub.1-y A.sub.y (where the element material R is at least one rare earth element, the element material TM at least one 3d transition metal and the element material A at least one semi-metal-semiconductor element) and having an easy axis of magnetization in a direction perpendicular to the film surface, the atomic ratio being 0.15.ltoreq.xx.ltoreq.0.35 and 0.00

摘要翻译： 一种磁光记录介质，其包括由非晶合金（RxTM1-x）1-yAy（其中元素材料R是至少一种稀土元素，元素材料TM至少一种3d过渡金属）和 元素材料A至少一个半金属半导体元件），并且在垂直于膜表面的方向上具有易磁化轴，原子比为0.15≤x≤0.35和0.00

公开(公告)号：US5780177A

公开(公告)日：1998-07-14

申请号：US721722

申请日：1996-09-26

申请人： Hiroshi Tomita ,  Tetsuhiko Mizoguchi

发明人： Hiroshi Tomita ,  Tetsuhiko Mizoguchi

IPC分类号： H01F10/16 ,  G11B5/31 ,  H01F10/12 ,  H01F10/13 ,  H01F17/00 ,  H01F17/04 ,  G11B5/66

CPC分类号： G11B5/3109 ,  H01F10/135 ,  H01F10/137 ,  H01F17/04 ,  Y10S428/90 ,  Y10T428/115 ,  Y10T428/12931 ,  Y10T428/12979

摘要： A magnetic thin film is disclosed which has a composition represented substantially by the following chemical formula and, the same time, has the whole or part of the thin film formed of an amorphous region: {(Fe.sub.1-x Co.sub.x).sub.1-y (B.sub.1-z X.sub.z).sub.y }.sub.1-a RE.sub.awherein X represents at least one element selected from among the Group 4B elements in the CAS version of the Periodic Table, RE represents rare earth elements including Sm, and x, y, z, and a represent numerical values satisfying the following expressions, 0

摘要翻译： 公开了一种磁性薄膜，其具有基本上由以下化学式表示的组成，并且同时具有由非晶区形成的全部或部分薄膜：{（Fe1-xCox）1-y（B1- zXz）y} 1-a REA，其中X表示选自元素周期表的CAS版本的4B族元素中的至少一种元素，RE表示稀土元素，包括Sm，x，y，z，a表示满足 0

公开(公告)号：US4915737A

公开(公告)日：1990-04-10

申请号：US188203

申请日：1988-04-29

申请人： Toshio Morimoto ,  Keizo Kazama ,  Yasuhiro Okajima ,  Yasuhiro Tsugita ,  Shinobu Endo

发明人： Toshio Morimoto ,  Keizo Kazama ,  Yasuhiro Okajima ,  Yasuhiro Tsugita ,  Shinobu Endo

IPC分类号： C22C19/00 ,  C22C28/00 ,  C22C38/00 ,  C23C14/16 ,  C23C14/34 ,  G11B11/10 ,  G11B11/105 ,  H01F10/12 ,  H01F10/13 ,  H01F41/18

CPC分类号： C23C14/165 ,  C23C14/3414 ,  G11B11/10589 ,  H01F10/126 ,  H01F10/135 ,  H01F41/183

摘要： An alloy target for making a magneto-optical recording medium by sputtering comprises an alloy containing 10 to 50 atom % of at least one rare earth element selected from among Sm, Nd, Gd, Tb, Dy, Ho, Tm and Er, with a balance consisting substantially of at least one transition metal selected from among Co, Fe and Ni. The alloy has a mixed structure composed of at least three phases of intermetallic compounds formed by the rare earth element and the transition metal.

公开(公告)号：US4833043A

公开(公告)日：1989-05-23

申请号：US72410

申请日：1987-07-13

申请人： Richard N. Gardner

发明人： Richard N. Gardner

IPC分类号： G02F1/00 ,  G11B5/64 ,  G11B5/72 ,  G11B5/851 ,  G11B11/105 ,  H01F10/13

CPC分类号： G02F1/0036 ,  G11B11/10586 ,  G11B11/10589 ,  G11B5/64 ,  G11B5/72 ,  G11B5/851 ,  H01F10/13 ,  H01F10/135 ,  Y10S428/90

摘要： A magneto optical thin film recording medium is disclosed having very high carrier-to-noise ratios and high rotation angles. A transmission electron microscope photomicrograph (at 200,000 X) of one such medium is shown in FIG. 1. These are multi-phase amorphous materials having magnetic anisotropy perpendicular to the plane of the thin film. They are produced in a triode vacuum sputtering process at vacuums in the range of 4.times.10.sup.-3 to 6.times.10.sup.-4 Torr. By adjusting process parameters such as substrate temperature, anode bias and deposition rate, the properties of the thin film can be altered.

摘要翻译： 公开了具有非常高的载波噪声比和高旋转角度的磁光薄膜记录介质。 图1中示出了一种这样的介质的透射电子显微镜显微照片（在200,000×）。 这些是具有垂直于薄膜平面的磁各向异性的多相非晶材料。 它们是在真空度为4×10 -3至6×10 -4乇的三极管真空溅射工艺中生产的。 通过调整衬底温度，阳极偏压和沉积速率等工艺参数，可以改变薄膜的性能。

公开(公告)号：US4497870A

公开(公告)日：1985-02-05

申请号：US482709

申请日：1983-04-06

申请人： Yoshihiko Kudo ,  Hidetsugu Kawabata ,  Masahiro Birukawa ,  Noriaki Hara ,  Akira Muto

发明人： Yoshihiko Kudo ,  Hidetsugu Kawabata ,  Masahiro Birukawa ,  Noriaki Hara ,  Akira Muto

IPC分类号： C22C38/00 ,  G03G5/16 ,  G11B11/10 ,  G11B11/105 ,  G11C13/06 ,  H01F10/12 ,  H01F10/13 ,  G02F1/09

CPC分类号： H01F10/135 ,  G03G5/16 ,  G11B11/10586 ,  Y10S428/90 ,  Y10T428/31678

摘要： A magneto-optical recording medium comprising a layer of amorphous rare-earth-transition-metal alloy having a uniaxial magnetic anisotropy, the alloy containing germanium as additive, and the recording medium having high crystallization temperature, enough stability and good reading S/N ratio.

摘要翻译： 一种磁光记录介质，包括具有单轴磁各向异性的非晶态稀土 - 过渡金属合金层，含有锗作为添加剂的合金以及具有高结晶温度的记录介质，足够的稳定性和良好的读数S / N比 。

公开(公告)号：US20030048675A1

公开(公告)日：2003-03-13

申请号：US10230209

申请日：2002-08-29

发明人： Takashi Ikeda

IPC分类号： G11C007/00

CPC分类号： B82Y25/00 ,  G11C11/15 ,  G11C11/16 ,  H01F10/135 ,  H01F10/324 ,  H01F10/3254 ,  H01F10/3281 ,  H01F10/3286 ,  Y10T428/1121 ,  Y10T428/12958

摘要： A magnetoresistive film of a structure comprising a non-magnetic film being put between magnetic films. At least one of the magnetic films is a perpendicular magnetic anisotropy film including a rate earth metal, Fe and Co as main ingredients. And, composition of Co to Fe and Co is within a range from 8 atomic percent to 97 atomic percent both inclusive. A memory comprises a plurality of magnetoresistive films described in the above as memory elements; unit for recording information in the magnetoresistive films; and unit for reading the information recorded in the magnetoresistive films.

摘要翻译： 将包含非磁性膜的结构的磁阻膜置于磁膜之间。 磁性膜中的至少一个是包括速率土壤金属Fe和Co作为主要成分的垂直磁各向异性膜。 另外，Co与Fe和Co的组成在8原子％〜97原子％的范围内。 存储器包括上述作为存储元件描述的多个磁阻膜; 用于在磁阻膜中记录信息的单元; 以及用于读取记录在磁阻膜中的信息的单元。