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    • 7. 发明授权
    • Longitudinal magnetic media having a granular magnetic layer
    • 具有粒状磁性层的纵向磁性介质
    • US07407719B1
    • 2008-08-05
    • US10829164
    • 2004-04-22
    • Erol GirtLi-Lien LeeSamuel D. Harkness, IV
    • Erol GirtLi-Lien LeeSamuel D. Harkness, IV
    • G11B5/66
    • G11B5/732G11B5/65G11B5/7325
    • A novel method of manufacturing a longitudinal granular oxide recording medium is disclosed. The method preferably entails obtaining a non-magnetic substrate, heating the substrate at a temperature T1 that is greater than 150° C., forming a first layer with body-centered cubic atomic structure and with a preferred growth orientation, cooling the substrate to a temperature T2 and forming a second layer comprising a magnetic oxide-containing granular magnetic layer with a hexagonal close packed atomic structure and with a preferred growth orientation. The magnetic oxide-containing granular magnetic layer contains magnetic crystal grains that are substantially isolated by an inter-granular region comprising a non-magnetic substance, wherein the non-magnetic substance is preferably an oxide-containing material.
    • 公开了制造纵向粒状氧化物记录介质的新颖方法。 该方法优选需要获得非磁性衬底,在大于150℃的温度T 1加热衬底,形成具有体心立方原子结构的第一层, 200>优选的生长方向,将衬底冷却至温度T 2,并形成包含具有六方密堆积原子结构的含氧化物的颗粒状磁性层的第二层,并且具有<11-20> 首选生长方向。 含有磁氧化物的粒状磁性层含有通过包含非磁性物质的颗粒间区域基本隔离的磁性晶粒,其中非磁性物质优选为含氧化物的材料。
    • 8. 发明授权
    • Magnetic recording media using directly textured glass
    • 使用直接纹理化玻璃的磁记录介质
    • US07298588B2
    • 2007-11-20
    • US10869007
    • 2004-06-15
    • Li-Lien LeeShanghsien RouRomulo Ata
    • Li-Lien LeeShanghsien RouRomulo Ata
    • G11B5/65G11B5/738
    • G11B5/732G11B5/656G11B5/66G11B5/7325G11B5/8404
    • A magnetic recording medium deposited on glass and having an orientation ratio greater than one is disclosed. The magnetic recording medium includes a CoW seedlayer deposited on a circumferentially textured glass substrate. The magnetic recording medium with such a seedlayer can have an OR that is similar or higher than that with a NiP seedlayer. Magnetic recording medium with a CoW seedlayer can produce oriented glass media with orientation ratio OR>1 when sputtered on substrates which have been circumferentially textured before the deposition of the CoW seedlayer. The W content of the CoW seedlayer can range between 30-50 at %. The thickness of the CoW seedlayer can range between 10 Å and 200 Å. The method for sputter depositing the magnetic recording medium is also disclosed and includes sputter depositing the CoW seedlayer using pure Ar as sputtering gas or using a mixture of Ar and O2, H2O and N2 as sputtering gas.
    • 公开了一种沉积在玻璃上并具有大于1的取向比的磁记录介质。 磁记录介质包括沉积在周向织构化的玻璃基板上的CoW种子层。 具有这种种子层的磁记录介质可以具有与NiP种子层相似或更高的OR。 具有CoW种子层的磁记录介质可以在沉积CoW种子层之前沿周向纹理化的基底上溅射时产生取向比OR> 1的取向玻璃介质。 CoW种子层的W含量可以在30-50at%之间。 CoW种子层的厚度可以在10埃和200埃之间。 还公开了用于溅射沉积磁记录介质的方法,并且包括使用纯Ar作为溅射气体或者使用Ar和O 2 H 2的混合物溅射沉积CoW种子层 > O和N 2 作为溅射气体。
    • 10. 发明授权
    • System and method for recording media on textured glass
    • 在纹理玻璃上记录介质的系统和方法
    • US06824896B2
    • 2004-11-30
    • US10335348
    • 2002-12-31
    • Li-Lien LeeSamuel Dacke HarknessKien Vinh HuaEric Steck Freeman
    • Li-Lien LeeSamuel Dacke HarknessKien Vinh HuaEric Steck Freeman
    • G11B566
    • G11B5/732G11B5/66G11B5/7325Y10S428/90Y10T428/12465Y10T428/12854Y10T428/265
    • A magnetic media structure 200 deposited on glass substrates without a NiP layer having oriented media (ORMRT>1), high coercivity and high SMNR is presented. This media will significantly reduce the cost of making high quality media on glass substrates by eliminating the cost associated with additional steps of depositing a NiP layer and texturing that layer. First glass substrates are mechanically textured to have a surface roughness of about 1 Å to about 12 Å. The first layer of the magnetic structure contains Cr and Ti with a Ti content of 27 to 63 atomic percentage. The second layer contains Co and Ti with a Ti content of 43 to 55 atomic percentage. The third layer is a Cr-alloy layer wherein the alloy is an element chosen from W, Mo, V, Si, Ti, Mn, Ru, B, Nb, Ta, Zr, and Pt. The fourth layer is Co58Cr37Pt5 and the fifth layer is Co61Cr15Pt12B12. Finally, the protective overcoat is typically a hard material that contains hydrogenated carbon.
    • 提出了沉积在不具有定向介质(ORMRT> 1)的NiP层,高矫顽力和高SMNR的玻璃衬底上的磁介质结构200。 该介质将通过消除与沉积NiP层和纹理化该层的附加步骤相关的成本来显着降低在玻璃基板上制造高质量介质的成本。 第一玻璃基板机械​​地织构成具有大约至大约的表面粗糙度。 磁性结构的第一层含有Ti含量为27〜63原子%的Cr和Ti。 第二层含有Ti含量为43〜55原子百分比的Co和Ti。 第三层是Cr合金层,其中合金是选自W,Mo,V,Si,Ti,Mn,Ru,B,Nb,Ta,Zr和Pt的元素。 第四层为Co58Cr37Pt5,第五层为Co61Cr15Pt12B12。 最后,保护性外涂层通常是含有氢化碳的硬质材料。