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Tracing of the time factor on strain and structural relaxation of terbium-iron amorphous alloys

铽铁非晶合金应变和结构弛豫的时间因素追踪

基本信息

批准号：
15560579
负责人：
YAMADA Kazumasa
金额：
$ 2.05万
依托单位：
Hakodate National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Certainly metallic amorphous alloy is accompanied by structural relaxation phenomenon. Although the physical properties change of the relaxation by heat treatment is one of the fundamentals, the difficulty of the tracking measurement is missing the many important phenomena. Especially, Magneto-Optical Recording stability for Tb-Fe system amorphous alloy is closely related to the process, both sides of strain relaxation and structural relaxation in the long time is strongly necessity.The following were examined : it puts the principal objective between strain and structural relaxation. In strain change process it comparatively shows the change in the short time with large volume of time factor. On the other hand, in structural relaxation which comparatively shows the change in long time with small volume of time factor.For efficiency improvement of the tracing, physics experiment was made to fuse with computer experiment on this study. In the present work, by these methods, the aim of this article is to obtain of discussion for especially stability of physical and thermal atomic diffusion property.It is obviously that the activation energy in structural relaxation process of strain is about two orders of magnitude smaller than that in conventional self-diffusion behavior. Furthermore, the same activation energy is almost one order of magnitude smaller than that in surface diffusion behavior. It is considered that the detailed examination of this part of the diffusivity should be further problem.

金属非晶态合金必然伴随着结构松弛现象。虽然热处理松弛的物理性能变化是其基本原理之一，但跟踪测量的困难却遗漏了许多重要现象。特别是，Tb-Fe系非晶态合金的磁光记录稳定性与这一过程密切相关，应变弛豫和结构弛豫在长时间内都是非常必要的。主要研究内容如下：将应变和结构弛豫作为主要目标。在应变变化过程中，比较地表现为时间因素量大的短时间变化。另一方面，在结构松弛方面，用较小的时间因子来比较长时间内的变化，为了提高追踪效率，本研究采用物理实验与计算机实验相结合的方法进行研究。在本工作中，通过这些方法，本文的目的是对物理和热原子扩散性质的稳定性进行讨论。显然，应变结构松弛过程中的激活能比常规自扩散行为中的激活能小大约两个数量级。此外，相同的活化能几乎比表面扩散行为的活化能小一个数量级。人们认为，这一部分的扩散系数的详细检查应该是进一步的问题。