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计算机的外存贮器中,磁盘装置起了相当重要的作用,为了使它容量大而经济,尽量提高记录密度是完全必要的,所以要不断对存贮介质、磁头、外国电路、结构精度等进行改进。最近每个盘组的存贮容量已达到了数十～数百亿字节。 现在磁盘的盘片是以铝合金园板上涂敷γ·Fe_2O_8为主流。为了提高磁盘的记录密度,必需对上述各个部分加以改进。作为记录介质本身,下面几点值得加以改进。 (1)改进涂敷技术,尽量减薄磁介质的厚度; (2)改进微粒磁性体的磁特性,特别要提高矫顽力和剩磁通密度。
In the external memory of the computer, the magnetic disk device plays a very important role. In order to make it large and economical, it is absolutely necessary to increase the recording density as much as possible, so it is necessary to continuously improve the recording medium such as storage medium, magnetic head, foreign circuit, structure accuracy Improve. The storage capacity of each disk group has recently reached tens to tens of billions of bytes. Now disk disk is coated with aluminum alloy y.Fe_2O_8 mainstream. In order to improve the recording density of the disk, it is necessary to improve each of the above sections. As a recording medium itself, the following points deserve to be improved. (1) improve the coating technology, as far as possible to reduce the thickness of magnetic media; (2) to improve the magnetic properties of particulate magnetic body, in particular, to improve coercivity and residual magnetic flux density.