Thermodynamics of polydomain heterostructures. II. Effect of microstresses
Thermodynamics of polydomain heterostructures. II. Effect of microstresses
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DOI：
10.1063/1.366678
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发表时间：
1998-06
影响因子：
3.2
通讯作者：
A. Roytburd
中科院分区：
文献类型：
--
作者：
A. Roytburd
微应力对多畴异质结构形成的热力学效应被认为是。微应力的产生是由于多畴层和相邻层之间的界面上的实际失配与平均失配的周期性偏差。热力学分析仅限于D/h<1的异质结构，其中D是多畴结构的周期，h是有源或无源异质结构的较薄层的厚度。在这种情况下，界面之间通过其微应力的长程相互作用可以忽略不计。本文提出了一种简单有效的多畴异质结构中微应力能的近似计算方法。利用这种近似，厚度对多畴结构的影响可以通过调整畴间不相容性参数而包含在热力学理论中。如果域接口是移动的，则应观察遵从性和敏感性的关键行为.
The thermodynamic effects of microstresses on the formation of polydomain heterostructures are considered. The microstresses arise due to the periodic deviation of the actual misfit from the average misfit on the interfaces between a polydomain layer and neighboring layers. The thermodynamic analysis is restricted to heterostructures with D/h<1, where D is the period of the polydomain structure, and h is the thickness of the thinner layer of the heterostructure, either active or passive. In this case the long-range interactions between interfaces through their microstresses can be neglected. A simple and effective approximation for the microstress energy in polydomain heterostructures is proposed. Using this approximation, the effect of thickness on the polydomain structure can be included in the thermodynamic theory through the adjustment of the parameter of incompatibility between the domains. If the domain interfaces are mobile, the critical behavior of compliance and susceptibility should be observed ...