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首页> 外文期刊>Journal of Crystal Growth >Ordering structure along the [00 1] direction of InAlAs
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Ordering structure along the [00 1] direction of InAlAs

机译:沿InAlAs [00 1]方向的有序结构

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We have found a new type ordering structure in materials containing Indium. Generally conventional natural superlattice (NSL) stacks toward to {1 1 1}. However, the periodical structure in question stacks along the [001] direction, sometimes parallel to the substrate. We have studied the structure in detail as seen in InAlAs-bulk layers on a vicinal (001) InP substrate. We investigated the structure using a transmission electron microscope and a high-resolution X-ray diffraction method, and confirmed the structure stacks along [00 1] direction with a pitch three times that of the InP lattice constant. We found a similar structure in InAlGaP-bulk layers on a (1 00) GaAs substrate 10° tilted toward the < 011 > direction. The mechanisms have not been clarified yet, however, we consider that atomic steps on the epitaxial surface could be related.
机译:我们已经在包含铟的材料中发现了一种新型的有序结构。通常,常规的自然超晶格(NSL)朝{1 1 1}方向堆叠。然而,所讨论的周期性结构沿着[001]方向堆叠,有时平行于基底。我们已经详细研究了该结构,如在相邻(001)InP衬底上的InAlAs本体层中看到的那样。我们使用透射电子显微镜和高分辨率X射线衍射方法研究了结构,并确认了沿[00 1]方向的结构堆叠,其间距是InP晶格常数的三倍。我们在朝<011>方向倾斜10°的(1 00)GaAs衬底上的InAlGaP本体层中发现了类似的结构。其机理尚不清楚,但是,我们认为外延表面上的原子台阶可能是相关的。

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