Amorphisation of MgO single crystal specimens prepared by ion milling for transmission electron microscopy studies
| Autor: | L. M. Brown, M. M. Chaudhri, M. Younis Khan |
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| Rok vydání: | 1990 |
| Předmět: |
Materials science
Ion beam Fresh Specimen Surface Properties digestive oral and skin physiology technology industry and agriculture food and beverages complex mixtures respiratory tract diseases law.invention Ion Specimen Handling Crystallography Microscopy Electron Optical microscope Electron diffraction law Transmission electron microscopy Anatomy Ion milling machine Composite material Magnesium Oxide High voltage electron microscopy |
| Zdroj: | Journal of electron microscopy technique. 15(4) |
| ISSN: | 0741-0581 |
| Popis: | Single crystal MgO specimens having low load Vickers indentations were thinned in an ion milling machine employing a single ion gun, and their characteristics were investigated with optical microscopy and high voltage electron microscopy (HVEM). It was found that the state of cleanliness of the specimen chamber of the ion milling machine had a very marked influence on the quality of the thinned specimens. If the specimen chamber was not well cleaned before ion milling a fresh specimen, the latter tended to show amorphisation due to the deposition on the specimen of the debris left in the chamber from the previously ion-milled specimens. Such observations were made from MgO specimens ion milled in several different types of commercial ion milling machine employing a single gun. It is proposed that to obtain good-quality ion milled TEM specimens, it is important to clean the specimen chamber thoroughly prior to milling. |
| Databáze: | OpenAIRE |
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