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1. 发明授权

US4647514A Magnetic domain device having a wide operational temperature range 失效
标题翻译：具有宽的工作温度范围的磁畴器件
公开(公告)号：US4647514A
公开(公告)日：1987-03-03
申请号：US807197
申请日：1985-12-10
申请人： Roy C. Le Craw , Lars C. Luther , Terence J. Nelson
发明人： Roy C. Le Craw , Lars C. Luther , Terence J. Nelson
IPC分类号： G11C19/08 , H01F10/24 , G11C11/14
CPC分类号： G11C19/0808 , H01F10/24 , Y10S428/90 , Y10T428/32
摘要： Yttrium-iron magnetic domain materials having bismuth ions on dodecahedral sites are suitable for the manufacture of high-density, high-speed magnetic domain devices for operation at high and especially at very low temperatures. In these devices magnetic domain velocity is greater than 2000 centimeters per second per oersted, and magnetic domain diameter is less than 3 micrometers. A specified operational temperature range may extend from -150 to 150 degrees C.; accordingly, such devices are particularly suitable for operation aboard satellites, e.g., in satellite communications systems.
摘要翻译：在十二面体位置具有铋离子的钇 - 铁磁畴材料适用于制造高密度高速磁畴器件，用于在高温特别是在非常低的温度下工作。在这些器件中，磁畴速度大于每秒2000厘米/秒，磁畴直径小于3微米。指定的工作温度范围可以从-150℃升至150℃。因此，这样的设备特别适用于卫星上的操作，例如在卫星通信系统中。

2. 发明授权

US4419417A Magnetic domain device having a wide operational temperature range 失效
公开(公告)号：US4419417A
公开(公告)日：1983-12-06
申请号：US319609
申请日：1981-11-09
申请人： Roy C. Le Craw , Lars C. Luther , Terence J. Nelson
发明人： Roy C. Le Craw , Lars C. Luther , Terence J. Nelson
IPC分类号： G11C19/08 , H01F10/24 , G11C11/14
CPC分类号： G11C19/0808 , H01F10/24 , Y10S428/90
摘要： Yttrium-iron magnetic domain materials having bismuth ions on dodecahedral sites are suitable for the manufacture of high-density, high-speed magnetic domain devices for operation at high and especially at very low temperatures. In these devices magnetic domain velocity is greater than 2000 centimeters per second per oersted, and magnetic domain diameter is less than 3 micrometers. A specified operational temperature range may extend from -150 to 150 degrees C.; accordingly, such devices are particularly suitable for operation aboard satellites, e.g., in satellite communications systems.

3. 发明授权

US4198689A Garnet magnetoresistive sensor for magnetic fields 失效
标题翻译：用于磁场的石榴石磁阻传感器
公开(公告)号：US4198689A
公开(公告)日：1980-04-15
申请号：US937958
申请日：1978-08-30
申请人： Ernst M. Gyorgy , Roy C. Le Craw , Raymond Wolfe
发明人： Ernst M. Gyorgy , Roy C. Le Craw , Raymond Wolfe
IPC分类号： G11B5/39 , G11C19/08
CPC分类号： G11B5/3903 , G11C19/0866
摘要： The discovery of a magnetoresistive effect in oriented, crystalline, semiconducting iron garnet materials is used to design devices which detect the presence or orientation of magnetic fields. The principal measure of this effect is that the resistance between two electrodes (12) on the garnet body (11) varies as an imposed magnetic field (14, 15) produces a change in the direction of the magnetization of the body (11). This effect is useful when the garnet is so constituted as to possess a resistivity from 10.sup.3 to 10.sup.7 ohm-centimeters. Also, the anisotropy field of the garnet body must be comparable to less than the magnitude of the magnetic field to be detected. One aspect of particular utility for magnetic "bubble" detectors (in magnetic bubble memories) is the isotropic character of the resistance when the magnetization is varied in the (111) plane but the significant change of resistance when the magnetization is moved to the [111] direction.
摘要翻译：在定向，晶体，半导体铁石榴石材料中发现磁阻效应用于设计检测磁场的存在或取向的装置。这种效果的主要措施是，当施加的磁场（14,15）产生主体（11）的磁化方向的变化时，石榴石体（11）上的两个电极（12）之间的电阻变化。当石榴石构成为具有103至107欧姆厘米的电阻率时，该效果是有用的。此外，石榴石体的各向异性场必须与要检测的磁场的大小相当。磁性“气泡”检测器（在磁性气泡存储器中）的特殊用途的一个方面是当磁化在（111）平面中变化时电阻的各向同性特征，但当磁化移动到[111 ]方向。

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