Molecular beam epitaxy of Ca_1-xR_xF_2＋x(R=Nd,Er) layers: study of RHEED pattern and lattice mismatch

J.M. Ko; T. Fukuda

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Molecular beam epitaxy of Ca_1-xR_xF_2＋x(R=Nd,Er) layers: study of RHEED pattern and lattice mismatch

机译：Ca_1-xR_xF_2 ＋ x（R = Nd，Er）层的分子束外延：RHEED图案和晶格失配的研究

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摘要

Ca_1-xR_xF_2＋x and Ca_1-xR_xF_2＋x layers were grown on CaF_2(1 1 1) substrates at 600 and 550 deg C, respectively, by moleculr beam epitaxy. Reflection hgih-energy electron diffration (RHEED) investigaiton revealed that Ca_1-xR_xF_2 ＋x layers have two types of surface strcutre, namely (1×1) and (3×3)R30 deg with hexagonal symmetry. depending on Nd mole fraction, while Ca_1-xR_xF_2＋x layers have three types of surface structure, namely (1×1) and (2×2) with hexagonal symmetry, and a triple rotated domain strcutre based on a rectangular cell depending on Er mole fraction. The lattice mismatch of the epilayers and substrate, whcih is important for applications involving buffer laeyrs. was mesured by X-ray rocking curve (XRC) analysis.

机译：通过分子束外延分别在CaF_2（1 1 1）衬底上分别在600和550℃下生长Ca_1-xR_xF_2 ＋ x和Ca_1－xR_xF_2 ＋ x层。反射高能电子衍射（RHEED）研究表明，Ca_1-xR_xF_2 ＋ x层具有两种表面条纹，即六边形对称的（1×1）和（3×3）R30度。取决于Nd摩尔分数，而Ca_1-xR_xF_2 ＋ x层具有三种表面结构，即具有六边形对称性的（1×1）和（2×2），以及取决于Er摩尔分数的基于矩形单元的三重旋转畴结构。外延层和基底的晶格失配，对于涉及缓冲层的应用很重要。通过X射线摇摆曲线（XRC）分析进行测量。

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《Journal of Crystal Growth》 |1999年第4期|p.490-497|共8页
作者
J.M. Ko; T. Fukuda;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类晶体学;
关键词
MBE; Fluoride; Surface strucutre; Solid solution; Domina; Lattice mismatch;

机译：MBE;氟化物;表面结构;实在的方法;多米娜晶格失配;

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Molecular beam epitaxy of Ca_1-xR_xF_2＋x(R=Nd,Er) layers: study of RHEED pattern and lattice mismatch

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