Dynamical and quasistatic structural relaxation paths in Pd40Ni40P20 glass
By sequential heat treatment of a Pd40Ni40P20 metallic glass at temperatures and durations for which α-relaxation is not possible, dynamic, and quasistatic relaxation paths below the glass transition are identified via ex situ ultrasonic measurements following each heat treatment. The dynamic relaxa...
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| Veröffentlicht in: | Applied physics letters 2009-11, Vol.95 (20) |
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| container_title | Applied physics letters |
| container_volume | 95 |
| creator | Kahl, A. Koeppe, T. Bedorf, D. Richert, R. Lind, M. L. Demetriou, M. D. Johnson, W. L. Arnold, W. Samwer, K. |
| description | By sequential heat treatment of a Pd40Ni40P20 metallic glass at temperatures and durations for which α-relaxation is not possible, dynamic, and quasistatic relaxation paths below the glass transition are identified via ex situ ultrasonic measurements following each heat treatment. The dynamic relaxation paths are associated with hopping between nonequilibrium potential energy states of the glass, while the quasistatic relaxation path is associated with reversible β-relaxation events toward quasiequilibrium states. These quasiequilibrium states are identified with secondary potential energy minima that exist within the inherent energy minimum of the glass, thereby supporting the concept of the sub-basin/metabasin organization of the potential-energy landscape. |
| doi_str_mv | 10.1063/1.3266828 |
| format | Article |
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| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2009-11, Vol.95 (20) |
| issn | 0003-6951 1077-3118 |
| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| title | Dynamical and quasistatic structural relaxation paths in Pd40Ni40P20 glass |
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