公开(公告)号：US06723450B2

公开(公告)日：2004-04-20

申请号：US10103186

申请日：2002-03-19

申请人： Hoa Van Do ,  Mary F. Doerner ,  Eric Edward Fullerton ,  David Thomas Margulies ,  William G. McChesney ,  Manfred Ernst Schabes ,  Kai Tang

发明人： Hoa Van Do ,  Mary F. Doerner ,  Eric Edward Fullerton ,  David Thomas Margulies ,  William G. McChesney ,  Manfred Ernst Schabes ,  Kai Tang

IPC分类号： G11B566

CPC分类号： G11B5/66 ,  G11B5/82 ,  Y10T428/12646 ,  Y10T428/12854 ,  Y10T428/12861 ,  Y10T428/12868 ,  Y10T428/12889 ,  Y10T428/12896 ,  Y10T428/24967

摘要： A magnetic recording medium for data storage uses a magnetic recording layer having at least two ferromagnetic films with different remanent magnetization-thickness (Mrt) values that are coupled antiparallel across a nonferromagnetic spacer film predominantly by the dipole field (Hd) from the grains of the higher-Mrt ferromagnetic film. The material compositions and thicknesses of the ferromagnetic films and the nonferromagnetic spacer film are selected so that Hd predominates over any antiferromagnetic exchange coupling field (Haf) and is greater than the coercive field of the lower-Mrt ferromagnetic film. As a result, the magnetizations of the two ferromagnetic films are antiparallel in the two remanent magnetic states, and thus the net remanent magnetization-thickness product (Mrt) of the recording layer is the difference in the Mrt values of the two ferromagnetic films.

摘要翻译： 用于数据存储的磁记录介质使用具有至少两个铁磁膜的磁记录层，所述至少两个铁磁膜具有不同的剩余磁化厚度（Mrt）值，其主要由偶极场（Hd）与非磁性间隔膜 较高的Mrt铁磁膜。 选择铁磁膜和非铁磁隔离膜的材料组成和厚度，使得Hd优于任何反铁磁交换耦合场（Haf），并且大于下部Mrt铁磁膜的矫顽场。 结果，两个铁磁膜的磁化在两个剩余磁状态下是反平行的，因此记录层的净残磁强度 - 厚度乘积（Mrt）是两个铁磁膜的Mrt值之差。

公开(公告)号：US4350116A

公开(公告)日：1982-09-21

申请号：US219075

申请日：1980-12-22

申请人： Johannes Grandia ,  William G. McChesney ,  Hugo A. E. Santini ,  Harold L. Turk

发明人： Johannes Grandia ,  William G. McChesney ,  Hugo A. E. Santini ,  Harold L. Turk

IPC分类号： C30B19/06 ,  B05C13/02

CPC分类号： C30B19/068 ,  Y10S269/903

摘要： A holder for liquid phase epitaxial (LPE) growth which eliminates mesas on the surface of the film is described. The holder has two legs to which a ring is connected. The ring has holding means so that it can hold one wafer or two wafers back-to-back. One of the two legs extends vertically below the first ring. In a preferred embodiment a second ring having holding means for a pair of wafers back-to-back is attached to the elongated leg. This holder structure prevents a film from the liquid melt from forming when the holder is withdrawn from the liquid growth solution, thereby eliminating the formation of mesas which occur when the film ruptures.

摘要翻译： 描述了用于消除膜表面上的台面的液相外延（LPE）生长的保持器。 支架具有两个连接环的支脚。 环具有保持装置，使得其可以背对背地保持一个晶片或两个晶片。 两条腿中的一条垂直于第一环的下方延伸。 在优选实施例中，具有用于一对背板背对的保持装置的第二环连接到细长的腿上。 当保持器从液体生长溶液中取出时，该保持器结构防止了液体熔融物的形成，从而消除了当膜破裂时出现的台面的形成。