-
公开(公告)号：US10115890B2
公开(公告)日：2018-10-30
申请号：US15251056
申请日：2016-08-30
发明人： Hitoshi Nakata , Takehito Shimatsu
IPC分类号： H01L29/82 , H01L43/10 , B81B7/02 , H01L43/08 , B81B3/00 , G11B5/39 , H01L27/22 , G11B5/65 , H01F10/12 , G11C11/16 , H01F10/32
摘要： The problem of the invention is to provide a magnetic thin film having a high magnetic anisotropy constant Ku and a high coercive force Hc, and to provide an application device comprising the above magnetic thin film. The magnetic thin film of the present invention includes an ordered alloy including: at least one first element selected from the group consisting of Fe and Ni; at least one second element selected from the group consisting of Pt, Pd, Au and Ir; and Sc.
-
公开(公告)号：US10090012B2
公开(公告)日：2018-10-02
申请号：US14384436
申请日：2013-08-06
发明人： Shin-ichi Ogino
摘要： An Fe-based magnetic material sintered compact containing BN, wherein the Fe-based magnetic material sintered compact has an oxygen content of 4000 wtppm or less. The present invention provides a sintered compact which enables the formation of a magnetic thin film in a thermally assisted magnetic recording media, and in which the generation of cracks and chipping is suppressed when the sintered compact is processed into a sputtering target or the like.
-
公开(公告)号：US10074396B2
公开(公告)日：2018-09-11
申请号：US15264988
申请日：2016-09-14
申请人： SHOWA DENKO K.K.
发明人： Eishin Yamakawa , Katsuaki To , Saeko Hayase
CPC分类号： G11B19/28 , G11B5/72 , G11B5/725 , G11B21/106
摘要： In a magnetic recording medium of the present invention, an outermost surface of a protective layer 3 on a lubricant layer 4 side contains carbon and nitrogen in a range of 50 atomic % to 90 atomic %, and the lubricant layer 4 is formed by being in contact with the outermost surface, contains compounds A to C represented in the below general formulas (1) to (3) described below, and has a film thickness of 0.5 nm to 2 nm. R1-C6H4OCH2CH(OH)CH2OCH2—R2-CH2OCH2CH(OH)CH2OH (1), CH2(OH)CH(OH)CH2OCH2CF2CF2(OCF2CF2CF2)mOCF2CF2CH2OCH2CH(OH)CH2OH (2), HOCH2CF2CF2O(CF2CF2CF2O)sCF2CF2CH2OCH2CH(OH)CH2OH (3)
-
公开(公告)号：US09940963B1
公开(公告)日：2018-04-10
申请号：US15354980
申请日：2016-11-17
发明人： Kai Tang
摘要： A method for manufacturing a magnetic media for magnetic data recording that improves smoothness for reduced magnetic spacing, and also improves mechanical integration to improve reliability and lifespan of the data recording system. A magnetic material such as a magnetic recording layer is deposited over underlying layers that include a substrate. A first etching is performed that employs a Xe plasma. A second etching is then performed that employs an Ar plasma. The two step etching process advantageously improves smoothness of the surface of the magnetic layer which allows for a thinner overcoat for reduced magnetic spacing. The two step etching process also results in less head disk crashes, resulting in improved reliability.
-
公开(公告)号：US09940961B2
公开(公告)日：2018-04-10
申请号：US14680024
申请日：2015-04-06
发明人： Takuya Ono , Takehito Shimatsu
摘要： A perpendicular magnetic recording medium includes a non-magnetic substrate; and a magnetic recording layer that includes magnetic crystal grains and a non-magnetic crystal grain boundary that surrounds the magnetic crystal grains, wherein the magnetic crystal grains contain an ordered alloy and the non-magnetic crystal grain boundary contains Ge oxides. The magnetic recording layer may have a granular structure. The magnetic crystal grains may be micronized to be sufficiently ordered and separated, and the perpendicular magnetic recording medium may have a high magnetic anisotropy constant Ku and high coercivity Hc.
-
公开(公告)号：US09911446B1
公开(公告)日：2018-03-06
申请号：US15640924
申请日：2017-07-03
发明人： Joachim Ahner , David M. Tung , Ganping Ju , Philip L. Steiner , Thomas P. Nolan , Thomas Y. Chang , Pin-Wei Huang , Kaizhong Gao , Timothy Klemmer , David S. Kuo
CPC分类号： G11B5/66 , G11B5/02 , G11B2005/0021 , G11B2005/0024
摘要： A three dimensional magnetic recording media can consist of a coupling layer disposed between first and second vertically stacked recording layers. The coupling layer can provide exchange or antiferromagnetic coupling and allow the respective recording layers to be individually heat selected to different first and second coupling strengths through application of heat from a heat source.
-
公开(公告)号：US09886977B1
公开(公告)日：2018-02-06
申请号：US15389432
申请日：2016-12-22
发明人： Oleg Mryasov , Alan Kalitsov , Hoan Ho , Paul Dorsey , Gerardo Bertero
CPC分类号： G11B5/656 , G11B5/66 , G11B2005/0021
摘要： A recording medium having improved signal-to-noise ratio (SNR) capabilities includes dual cap layers over the recording layer, where the Curie temperature of the first cap layer over the recording layer is greater than the Curie temperature of the recording layer, and the Curie temperature of the second cap layer over the first cap layer is greater than the Curie temperature of the first cap layer. The first cap layer may be composed of a magnetically hard material, such as L10 CoPt, where the second cap layer may be composed of a magnetically soft material, such as Co. Such a medium is particularly useful in the context of heat-assisted magnetic recording (HAMR).
-
公开(公告)号：US20170352372A1
公开(公告)日：2017-12-07
申请号：US15664228
申请日：2017-07-31
摘要： The present invention aims at providing a magnetic recording medium that can lower a Curie temperature (Tc) of a magnetic material, without increasing an in-plane coercive force and lowering magnetic properties. The magnetic recording medium is a magnetic recording medium comprising a substrate and a magnetic recording layer, the magnetic recording layer comprising an FePtRh ordered alloy, wherein a Rh content in the FePtRh ordered alloy is 10 at % or less.
-
公开(公告)号：US20170337944A1
公开(公告)日：2017-11-23
申请号：US15158447
申请日：2016-05-18
发明人： Robert G. Biskeborn , Calvin S. Lo
CPC分类号： G11B5/708 , G11B5/716 , G11B5/72 , G11B5/7305
摘要： A magnetic recording medium according to one embodiment includes an underlayer and a magnetic layer above the underlayer. The magnetic layer includes a first magnetic material and particulates. A protective layer is positioned above the magnetic layer, the protective layer including a second material. A magnetic recording medium according to another embodiment includes a base film and a first nonmagnetic layer above the base film. The first nonmagnetic layer has first nonmagnetic particles. A second nonmagnetic layer is positioned above the first nonmagnetic layer, the second nonmagnetic layer having second nonmagnetic particles. A magnetic layer is positioned above the second nonmagnetic layer, the magnetic layer including a magnetic material.
-
公开(公告)号：US09818441B2
公开(公告)日：2017-11-14
申请号：US13577085
申请日：2011-02-03
CPC分类号： G11B5/7325 , G11B5/314 , G11B5/65 , G11B2005/0005 , G11B2005/0021
摘要： Disclosed is a thermally assisted magnetic recording medium comprising a substrate, a plurality of underlayers formed on the substrate, and a magnetic layer which is formed on the underlayers and predominantly comprised of an alloy having a L10 structure, characterized in that at least one of the underlayers is predominantly comprised of MgO and comprises at least one oxide selected from SiO2, TiO2, Cr2O3, Al2O3, Ta2O5, ZrO2, Y2O3, CeO2, MnO, TiO and ZnO. The thermally assisted magnetic recording medium has a magnetic layer comprised of fine magnetic crystal grains, exhibiting a sufficiently weak exchange coupling between magnetic grains, and having a minimized coercive force dispersion.
-
-
-
-
-
-
-
-
-
搜索结果
1004 条记录 (耗时 0.025 秒)
