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A New Approach of Monte Carlo' Simulation to Spin Technology

旋转技术蒙特卡罗模拟新方法

基本信息

批准号：
06805060
负责人：
ICHINOSE Yukio
金额：
$ 1.22万
依托单位：
Nagaoka University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06805060/
关键词：
magnetic recording magnetic thin film head MR head exchange bonding spin configuration inductive thin film head read-out waveform Monte Carlo' simulation 薄膜MRヘッド交換結合膜インダクティブヘッド

项目摘要

With arrival of multi-media new age, an improvement of the magnetic recording technology is needed very strongly. Development of magnetic thin film head with high performance as a key device in this field is most of important problem, that is to say, it is most of importance that a theoritical analysis and performance control of magnetic thin film head is executed perfectly.In the present report, the spin configuration in the interface of ferro-antiferro exchange bonding of MR thin film head as a key device of the future is at first investigated theoritically and then the electrical distortion of read-out waveform in the practical inductive thin film head is simulated theoritically.(1) First, the spin configuration of the normal direction to the F-AF boundary interface is investigated by using the Monte Carlo' simulation method. As the result, it is found that the average direction of spin is vibrationally decreased and that the spin configuration is gradually adhered. For these phenomena, a new concept and explanation is given thepritically and quantitatively.(2) Second, a specific read-out waveform distortion keeping the recording density of the inductive thin film head to the low level is investigated by simulation. As the result, it is found that the cause is a specific problem in the inductive thin film head and then it is appeared that the problem is settled by sputtering the low permeable material thin layr on the both side parts of thin film magnetic core. The practical magnetic core prepared by this method is evaluated to be superior to the present one.

随着多媒体新时代的到来，对磁记录技术提出了更高的要求。高性能的薄膜磁头作为该领域的关键器件，其研制是当前的一个重要问题，也就是说，对薄膜磁头的理论分析和性能控制是至关重要的。铁磁界面的自旋组态本文首先从理论上研究了作为未来关键器件的MR薄膜磁头的反铁交换键合，然后从理论上模拟了实际电感式薄膜磁头读出波形的电畸变。(1)首先，用蒙特卡罗方法模拟了F-AF界面法向的自旋组态。结果发现，自旋的平均方向振动地减小，并且自旋构型逐渐粘附。对这些现象给出了新的概念和定量的解释。(2)其次，通过模拟研究了使感应薄膜磁头的记录密度保持在低水平的特定读出波形失真。结果，发现原因是感应薄膜磁头中的特定问题，然后通过在薄膜磁芯的两侧部分上溅射低导磁率材料薄层来解决该问题。用该方法制备的实用磁芯上级现有的磁芯。