公开(公告)号：US3850690A

公开(公告)日：1974-11-26

申请号：US33540573

申请日：1973-02-23

Applicant: IBM

Inventor： LEE K ,  SUITS J

IPC: C23C26/00 ,  H01F10/12 ,  H01F41/14 ,  H01F10/02

CPC classification number: C23C26/00 ,  H01F10/12 ,  H01F10/265 ,  H01F41/14

Abstract: A method of making ferromagnetic films of MnGaGe upon a substrate, the films crystallizing in the tetragonal structure and having a grain size of less than one-half micron, made by the method of depositing a first layer of either manganese, or gallium and germanium upon a heated substrate, followed by the deposition of the remaining material upon the first layer, and annealing the deposited layers at a desired temperature until a homogeneous composition is achieved, and then cooling of the film-substrate combination. In this manner, with appropriately chosen temperatures, films having a grain size of less than onehalf micron and being particularly usable for storage applications may be fabricated.

Abstract translation: 在衬底上制造MnGaGe的铁磁性膜的方法，通过沉积第一层锰或镓和锗的方法，将膜以四方结构结晶并具有小于半微米的晶粒尺寸的方法 加热的衬底，然后将剩余材料沉积在第一层上，并在所需温度下退火沉积的层，直到达到均匀的组合物，然后冷却膜 - 衬底组合。 以这种方式，在适当选择的温度下，可以制造具有小于半微米的晶粒尺寸并且特别可用于存储应用的膜。

公开(公告)号：US3816237A

公开(公告)日：1974-06-11

申请号：US33586573

申请日：1973-02-26

Applicant: IBM

Inventor： BARRALL E ,  LEE K

IPC: G11B11/105 ,  H01F10/28 ,  G11B11/10

CPC classification number: H01F10/28 ,  G11B11/10586 ,  Y10S428/90 ,  Y10T428/31725

Abstract: The use of poly(parabanic acids) as a substrate for magnetooptic data storage applications. For example, the substrate is characterized by having optical inactivity and may be made free of stress induced dichroism and birefringence, thus being particularly suitable for use with magneto-optic storage films where information stored is read by utilizing the Kerr or Faraday effects.

Abstract translation: 使用聚（对缬氨酸）作为磁光数据存储应用的底物。 例如，衬底的特征在于具有光学不活动性并且可以没有应力诱导的二色性和双折射，因此特别适用于通过利用克尔或法拉第效应读取存储的信息的磁光存储膜。

公开(公告)号：US3795541A

公开(公告)日：1974-03-05

申请号：US3795541D

申请日：1971-11-26

Applicant: IBM

Inventor： LEE K ,  SAWATZKY E ,  SUITS J

IPC: C22C22/00 ,  C22C28/00 ,  C22C30/00 ,  G03G5/16 ,  H01F1/04 ,  H01F1/047 ,  H01F10/10 ,  H01F10/18 ,  C04B35/00

CPC classification number: G03G5/16 ,  C22C28/00 ,  H01F1/04 ,  H01F10/10

Abstract: A ROOM TEMPERATURE STABLE FERROMGNETIC PERMANENT MAGNET MATERIAL WITH A LARGE FARADAY ROTATION AND HAVING A CURIE TEMPERATURE IN THE REGION OF SUBSTANTIALLY 180-220*C. OF A MUTUAL SOLID SOLUTION HAVING ATOMIC PROPORTIONS INDICATED BY THE FORMULA:

MN.8-1.0AL1.3-1.6GE.8-1.0O0.05-.3

IN THE FILM FORM, THE MAGNETIZATION IS NORMAL TO THE FILM PLANE.