公开(公告)号：US06589676B1

公开(公告)日：2003-07-08

申请号：US09902600

申请日：2001-07-12

申请人： Jing Gui ,  Raj Thangaraj ,  Roger Alan Ristau ,  Samuel Dacke Harkness, IV ,  Gary Clark Rauch

发明人： Jing Gui ,  Raj Thangaraj ,  Roger Alan Ristau ,  Samuel Dacke Harkness, IV ,  Gary Clark Rauch

IPC分类号： G11B566

CPC分类号： C23C14/165 ,  G11B5/66 ,  G11B5/72 ,  G11B5/851 ,  G11B5/855 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/265

摘要： Corrosion resistant magnetic thin film media are fabricated using a CoCr magnetic layer having a stabilized protective chromium oxide film thereon. Stabilization of the protective chromium oxide film is achieved by incorporating a stabilizing element, such as Mo, V, Mn, Nb, Ni or Si, in the magnetic layer, thereby enabling elimination of the protective overcoat, e.g., C-containing protective overcoat, or forming the protective overcoat at a significantly low thickness of less than about 20 Å, e.g., up to about 1 Å. Embodiments include forming a magnetic layer comprising Co and Cr on an underlayer, and then forming a thin magnetic layer containing Co and Cr with the chromium oxide stabilizing element thereon. Embodiments further include introducing the chromium oxide stabilizing element by diffusion or ion implantation into a sputter deposited Co—Cr magnetic alloy layer.

摘要翻译： 使用其上具有稳定的保护性氧化铬膜的CoCr磁性层制造耐腐蚀磁性薄膜介质。 保护性氧化铬膜的稳定化是通过在磁性层中并入稳定元素如Mo，V，Mn，Nb，Ni或Si而实现的，由此能够消除保护性外涂层，例如含C的保护性外涂层， 或形成保护性外涂层，其厚度小于约20埃，例如至多约。 实施例包括在底层上形成包含Co和Cr的磁性层，然后在其上形成含有Co和Cr的薄的磁性层与氧化铬稳定元件。 实施例还包括通过扩散或离子注入将氧化铬稳定化元件引入溅射沉积的Co-Cr磁性合金层。

公开(公告)号：US06645614B1

公开(公告)日：2003-11-11

申请号：US09902099

申请日：2001-07-11

申请人： Erol Girt ,  Roger Alan Ristau

发明人： Erol Girt ,  Roger Alan Ristau

IPC分类号： G11B566

CPC分类号： G11B5/66 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12854 ,  Y10T428/12861 ,  Y10T428/24975 ,  Y10T428/265

摘要： A high areal recording density magnetic recording medium having improved thermal stability comprises: a non-magnetic substrate having at least one surface; and a layer stack overlying the at least one surface, comprised of at least one layer pair composed of first and second superposed ferromagnetic layers spaced-apart by a magnetic coupling structure comprising a thin non-magnetic spacer layer and at least one thin ferromagnetic interface layer at at least one interface between the non-magnetic spacer layer and the superposed ferromagnetic layers; wherein the thickness of the ferromagnetic interface layer is selected to provide enhancement of the magnetic coupling between the pair of ferromagnetic layers, thereby increasing the thermal stability of the magnetic recording medium.

摘要翻译： 具有改进的热稳定性的高面积记录密度磁记录介质包括：具有至少一个表面的非磁性基底; 以及叠层在所述至少一个表面上的层叠层，所述层叠层包括由包括薄非磁性间隔层和至少一个薄铁磁界面层的磁耦合结构隔开的第一和第二叠置铁磁层组成的至少一层层， 在非磁性间隔层和叠加的铁磁层之间的至少一个界面;其中选择铁磁界面层的厚度以提供该对铁磁层之间的磁耦合的增强，从而增加磁记录的热稳定性 中。