Sound velocity of glassy Pd 80 Si 20 after heavy-ion irradiation at low temperatures
| Autor: | M. Grimsditch, L. E. Rehn, D. P. Renusch, Gerhard Schumacher, Robert C. Birtcher |
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| Rok vydání: | 2002 |
| Předmět: |
Amorphous metal
Materials science Physics and Astronomy (miscellaneous) Krypton Metals and Alloys Analytical chemistry chemistry.chemical_element Mineralogy Thermal treatment Condensed Matter Physics Electronic Optical and Magnetic Materials Ion Shear modulus chemistry Brillouin scattering General Materials Science Irradiation Elastic modulus |
| Zdroj: | Philosophical Magazine A. 82:2333-2339 |
| ISSN: | 1460-6992 0141-8610 |
| Popis: | Specimens of glassy Pd80Si20 were irradiated at temperatures below 100 K with 3.5MeV krypton ions. After irradiation, changes in the sound velocity were measured at 80 K without warm-up by Brillouin scattering. The sound velocity decreased with increasing ion fluence and exponentially approached a saturation value of -4.7%. The change in the shear elastic modulus per unit concentration n of defects was estimated to be d(ln C)/dn = -9.4 to -4.7. The results of the present study are compared with changes in the elastic properties predicted recently by an interstitialcy model for glassy metals, and with the elastic properties of glassy metals after thermal treatment. |
| Databáze: | OpenAIRE |
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