Radiation-induced formation of cavities in amorphous germanium
Creators
- 1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
Description
Prethinned polycrystalline Ge TEM samples were irradiated with 1.5 MeV Kr+ ions at room temperature while structural and morphological changes were observed in situ in the Argonne High Voltage Electron Microscope-Tandem Facility. After a Kr+ dose of 1.2x1014 ions/cm2, the irradiated Ge was completely amorphized. A high density of small void-like cavities was observed after a Kr+ dose of 7x1014 ions/cm2. With increasing Kr+ ion dose, these cavities grew into large holes transforming the irradiated Ge into a sponge-like porous material after 8.5x1015 ions/cm2. The radiation-induced nucleation of void-like cavities in amorphous material is astonishing, and the final structure of the irradiated Ge with enormous surface area may have potential applications
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 55
- Journal Issue
- 24
- Series
- Appl. Phys. Lett.
- Journal Page Range
- 2494-2496
- ISSN
- 0003-6951
- CODEN
- APPLA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21031058
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- AMORPHOUS STATE; ELECTRON MICROSCOPY; EXPERIMENTAL DATA; GERMANIUM; HOLES; KRYPTON IONS; MEV RANGE 01-10; MORPHOLOGICAL CHANGES; NUCLEATION; PHYSICAL RADIATION EFFECTS; VOIDS
- Descriptors DEC
- CHARGED PARTICLES; DATA; ELEMENTS; ENERGY RANGE; INFORMATION; IONS; METALS; MEV RANGE; MICROSCOPY; NUMERICAL DATA; RADIATION EFFECTS