X-ray Fluorescence Holography Study on Si<SUB>1&minus;</SUB><i><SUB>x</SUB></i>Ge<i><SUB>x</SUB></i> Single Crystal

Abstract

Ge 0:8 and Ge single crystals, and reconstructed the images of second neighbor atoms around Ge. The positional shift of the atomic image across the whole composition range was three times larger than the value predicted from the difference in the lattice constants of pure Si and Ge. We found that imaginary part of the reconstruction strongly affects the positions of the atomic images. Thus, using the negative real parts, the atomic image became sharp and its shift dependent upon Ge composition comes to the reasonable values.

Growth and fundamental properties of SiGe bulk crystals

“…In comparison with the ab initio predictions [29], it can be concluded that most of the strain in SiGe alloys is accommodated by changes of both the bond length and bond angle. Such a local strain accommodation of SiGe alloys may decrease in the range of the second neighbor atoms supposed from recent X-ray fluorescence holography study [30].…”

Local environment of W and Mo atoms in CaW1−x Mo x O4 (x = 0.12) solid solution studied by X-ray structural analyzes

“…The atomic image seems fuzzy, because real and imaginary parts oscillate strongly around atomic positions. Although the occurrence of such fuzzy peaks has been reported, 23) the reason for this remains unsolved. It may be strange that the peaks appear apart from the positions of the open circles.…”

Extent and feature of lattice distortions around Ga impurity atoms in InSb single crystal

“…However, further information on lattice distortions is still lacking because the structural information from the XAFS measurement is limited to be one-dimensional, and mostly up to the second-neighboring atoms. In contrast, Hayashi et al 37 discussed the distortions of the second-and further-distantneighboring atoms around the Ge impurity by XFH.…”