Bibliographic Citation
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| Title | TEM study of the metamict state |
| Creator/Author | Headley, T.J. ; Ewing, R.C. ; Haaker, R.F. |
| Publication Date | 1982 Jan 01 |
| OSTI Identifier | OSTI ID: 6736647; Legacy ID: DE82020984 |
| Report Number(s) | SAND-82-1959C; CONF-820956-1 |
| DOE Contract Number | AC04-76DP00789 |
| Other Number(s) | Other: ON: DE82020984 |
| Resource Type | Conference |
| Specific Type | Technical Report |
| Resource Relation | Conference: 13. general meeting of the International Mineralogical Association, Varna, Bulgaria, 19 Sep 1982 |
| Research Org | Sandia National Labs., Albuquerque, NM (USA); New Mexico Univ., Albuquerque (USA). Dept. of Geology |
| Subject | 36 MATERIALS SCIENCE; METAMICT; RADIOACTIVE MINERALS; PHYSICAL RADIATION EFFECTS; ZIRCON; ZIRCONOLITE; ALPHA PARTICLES; AMORPHOUS STATE; CRYSTAL-PHASE TRANSFORMATIONS; DOMAIN STRUCTURE; ELECTRON DIFFRACTION; ELECTRON MICROSCOPY; NIOBIUM OXIDES; RECOILS; TANTALUM OXIDES; TITANIUM OXIDES; VOIDS; ACTINIDE COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CALCIUM OXIDES; CHALCOGENIDES; CHARGED PARTICLES; COHERENT SCATTERING; DIFFRACTION; IRON COMPOUNDS; IRON OXIDES; MATERIALS; MICROSCOPY; MINERALS; NIOBIUM COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; RADIATION EFFECTS; RADIOACTIVE MATERIALS; SCATTERING; SILICATE MINERALS; SILICATES; SILICON COMPOUNDS; TANTALUM COMPOUNDS; THORIUM COMPOUNDS; THORIUM OXIDES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS; ZIRCONIUM OXIDES; ZIRCONIUM SILICATES |
| Description/Abstract | The transformation from the crystalline to the metamict state is one in which a true structural change occurs in the material at the atomic level as a result of alpha-recoil events. Prior to reaching saturation doses, the material may consist of a mixture of crystalline and amorphous regions; however, the final saturation effect is one in which the electron diffraction patterns are broad, diffuse halos which are consistent with scattering from material with a nonperiodic atomic arrangement. To the limits of the resolution of the TEM (10-15 A, there was no evidence for long-range periodic structure or the formation of domain structures. Void formation accompanies the process of metamictization for complex, Nb-Ta-Ti oxides and zirconolite. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 11 |
| Availability | NTIS, PC A02/MF A01. |
| System Entry Date | 2008 Feb 08 |
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Last Updated: 11/19/2009