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Stripe domains in NiCo obliquely deposited films potential candidates for information storage

机译:NiCo倾斜沉积的薄膜中的条纹区域可能成为信息存储的候选对象

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摘要

An investigation is conducted of strong and weak stripe domains which appear in obliquely deposited NiCo films above a critical thickness for various compositions and angles of deposition in order to test the ability of such structures for information storage. It is shown that a modulation of this structure is possible, especially for the applied field perpendicular to the stripe direction. Materials with higher coercivity are needed for application. For this purpose it is desirable to modify the preparation conditions (e.g. use of Cr sublayer), which could result in a less continuous media. The question is whether in such a media the stripe domains would still exist. New ideas developed in the course of this work are the opportunity to use weak stripe domains of alternate polarity for Ni-rich alloys and the ability of the isolated bubblelike domain obtained at high field for cobalt-rich films to be used as information storage.
机译:为了检测这种结构用于信息存储的能力,对在临界厚度以上的倾斜沉积的NiCo膜中出现的强条带和弱条带域进行了研究,该厚度对于各种组成和沉积角度都是临界的。示出了这种结构的调制是可能的,特别是对于垂直于条纹方向的施加场。需要使用具有较高矫顽力的材料。为此目的,希望改变制备条件(例如使用Cr亚层),这可能导致不连续的介质。问题是在这样的媒体中,条带域是否仍然存在。在这项工作过程中开发出的新思想是,对于富镍合金,可以使用具有交替极性的弱条状磁畴,并且可以在高磁场下获得富钴膜用作信息存储的孤立的气泡状磁畴。

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