Dynamical and quasistatic structural relaxation paths in Pd_(40)Ni_(40)P_(20) glass
Abstract
By sequential heat treatment of a Pd_(40)Ni_(40)P_(20) 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.
Additional Information
© 2009 American Institute of Physics. Received 28 August 2009; accepted 29 October 2009; published online 19 November 2009. Financial support is acknowledged by the DFG-SFB 602 and Sa 337/10-1 Leibniz-Program as well as the MRSEC Program of the National Science Foundation under Award No. DMR-0520565.Attached Files
Published - Kahl2009p6530Appl_Phys_Lett.pdf
Files
| Name | Size | Download all |
|---|---|---|
|
md5:94cc3ae37a97bbc3bfdd52ebce5f3389
|
303.3 kB | Preview Download |
Additional details
- Eprint ID
- 16896
- Resolver ID
- CaltechAUTHORS:20091208-090858625
- NSF
- DMR-0520565
- NSF
- DFG-SFB 602
- NSF
- Sa 337/10-1
- Created
-
2010-01-04Created from EPrint's datestamp field
- Updated
-
2021-11-08Created from EPrint's last_modified field