Low temperature diffusion of hydrogenic species in oxide crystals: Radiation induced diffusion
- Oak Ridge National Lab., TN (United States)
- Universidad `Carlos III` de Madrid (Spain). Dept. de Ingenieria
Normally stable configurations of substitutional protons or deuterons in oxide crystal become highly unstable during ionizing radiation at room temperature, resulting in the displacements of these species. The cross section for radiation-induced-displacements of protons is exceedingly large and is a strong function of temperature. The displacement cross section of protons from cation sites is twice that of deuterons. Diffusion of these species can be induced at temperatures not otherwise possible by thermal means. For example, using electron irradiation near room temperature the O-H bond is readily broken and the hydrogenic species can be channeled along the c-axis in TiO{sub 2} by an applied electric field. Radiation induced displacements of protons from anion sites (hydride ions) at room temperature are also discussed.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Comision Interministerial de Ciencia y Tecnologia (Spain)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10192380
- Report Number(s):
- CONF-9308122-9; ON: DE94000374
- Resource Relation:
- Conference: International Union of Materials Research Societies on advanced materials,Tokyo (Japan),31 Aug - 4 Sep 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Diffusion of deuterium and hydrogen in rutile TiO/sub 2/ crystals at low temperatures
Fixation by anion exchange of toxic materials in a glass matrix