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The local perfection of massive gradient crystals studied by high-energy x-ray diffraction

Journal Article


Abstract


  • Structural parameters of bulk crystalline materials can be accessed in a damage-free manner by high-energy X-ray diffraction. Specific parts of the sample can be characterized if they are distinguished by the lattice spacings. This technique is applied for the first time to massive Si1-xGexcrystals with locally varying concentrations x. The data reveal e.g. an unusual lattice distortion with an in-plane expansion and an out-of-plane contraction if the samples are deposited at high temperature (1350 K). This is opposite to a distortion inferred from the difference in the lattice constants of Si and Ge. © 1995 IOP Publishing Ltd.

Publication Date


  • 1995

Published In


  • EPL  Journal

Citation


  • Magerl, A., Liss, K. D., Hastings, J. B., Siddons, D. P., Neumann, H. B., Poulsen, H. F., . . . Madar, R. (1995). The local perfection of massive gradient crystals studied by high-energy x-ray diffraction. EPL, 31(5-6), 329-334. doi:10.1209/0295-5075/31/5-6/014

Scopus Eid


  • 2-s2.0-84956241926

Start Page


  • 329

End Page


  • 334

Volume


  • 31

Issue


  • 5-6

Abstract


  • Structural parameters of bulk crystalline materials can be accessed in a damage-free manner by high-energy X-ray diffraction. Specific parts of the sample can be characterized if they are distinguished by the lattice spacings. This technique is applied for the first time to massive Si1-xGexcrystals with locally varying concentrations x. The data reveal e.g. an unusual lattice distortion with an in-plane expansion and an out-of-plane contraction if the samples are deposited at high temperature (1350 K). This is opposite to a distortion inferred from the difference in the lattice constants of Si and Ge. © 1995 IOP Publishing Ltd.

Publication Date


  • 1995

Published In


  • EPL  Journal

Citation


  • Magerl, A., Liss, K. D., Hastings, J. B., Siddons, D. P., Neumann, H. B., Poulsen, H. F., . . . Madar, R. (1995). The local perfection of massive gradient crystals studied by high-energy x-ray diffraction. EPL, 31(5-6), 329-334. doi:10.1209/0295-5075/31/5-6/014

Scopus Eid


  • 2-s2.0-84956241926

Start Page


  • 329

End Page


  • 334

Volume


  • 31

Issue


  • 5-6