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磁性薄片在外加偏磁场作用下形成的圆柱形磁畴就是磁泡。近年来,磁泡技术有了很大的发展。IBM 公司在1972年已制成了一个8千位的磁泡系统。基片材料是无定形的,通过溅射钆-钴(Gd-Co)合金形成薄膜,泡径为2微米,存储密度达10~7位/时~2。坡莫合金图形的制作是用电子束曝光后刻蚀而成的。后来,IBM 公司又研制了一个100步的移位寄存器,存储密度为10~8位/时~2。现在IBM 公司正在进行16千位的磁泡系统的工作,泡径为1微米,传输速率为10兆周,平均取数时间可为0.1毫秒。另据贝尔(Bell)实验室报导,他们研制的2×10~4字×50位的磁泡操作系统已可靠运行一年半以上,偏
Magnetic lamina in the application of bias magnetic field formed cylindrical magnetic domain is the bubble. In recent years, bubble technology has made great progress. IBM in 1972 has made a 8-bit bubble system. The substrate material was amorphous and formed a thin film by sputtering Gd-Co alloy with a cell diameter of 2 microns and a storage density of 10-7 / hour ~ 2. Permalloy graphics production is electron beam lithography after exposure. Later, IBM also developed a 100-step shift register, storage density of 10 to 8 bits / hour ~ 2. Now IBM is working on a 16-bit bubble system with a bubble diameter of 1 micron and a transfer rate of 10 trillion cycles, with an average fetch time of 0.1 milliseconds. According to Bell Laboratories reported that they developed 2 × 10 ~ 4 words × 50-bit bubble operating system has been reliable operation for more than a year and a half, partial