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High resolution triple axis x-ray diffraction analysis of ii-vi semiconductor crystals
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Volz, H. M. Matyi, R. J. |
| Copyright Year | 1999 |
| Description | The objective of this research program is to develop methods of structural analysis based on high resolution triple axis X-ray diffractometry (HRTXD) and to carry out detailed studies of defect distributions in crystals grown in both microgravity and ground-based environments. HRTXD represents a modification of the widely used double axis X-ray rocking curve method for the characterization of grown-in defects in nearly perfect crystals. In a double axis rocking curve experiment, the sample is illuminated by a monochromatic X-ray beam and the diffracted intensity is recorded by a fixed, wide-open detector. The intensity diffracted by the sample is then monitored as the sample is rotated through the Bragg reflection condition. The breadth of the peak, which is often reported as the full angular width at half the maximum intensity (FWHM), is used as an indicator of the amount of defects in the sample. This work has shown that high resolution triple axis X-ray diffraction is an effective tool for characterizing the defect structure in semiconductor crystals, particularly at high defect densities. Additionally, the technique is complimentary to X-ray topography for defect characterization in crystals. |
| File Size | 387193 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19990040319 |
| Archival Resource Key | ark:/13960/t9x111r6j |
| Language | English |
| Publisher Date | 1999-02-01 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics High Resolution Crystal Defects Gravitational Effects Semiconductors Materials Zinc Selenides Bragg Angle Microgravity X Ray Diffraction Crystal Structure Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
