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Updated: Mar 21, 2026
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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
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Memory Effect Manifested by a Boson Peak in Metallic Glass.
1Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
Physical Review Letters
|May 14, 2016
Summary
A boson peak in metallic glass exhibits memory effects during structural relaxation, directly linking slow relaxation dynamics to the peak's behavior. This reveals a profound understanding of glass dynamics.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Amorphous Materials
Background:
- Metallic glasses exhibit complex dynamics, including structural relaxation and the boson peak phenomenon.
- Understanding the interplay between these phenomena is crucial for predicting material properties.
Purpose of the Study:
- To investigate the correlation between the boson peak and structural relaxation in metallic glasses.
- To elucidate the dynamic behaviors of glasses through aging and scanning procedures.
Main Methods:
- Utilizing aging-and-scan procedures to observe memory effects.
- Monitoring enthalpy recovery and boson peak intensity during single-step and double-step isothermal aging.
Main Results:
- The boson peak demonstrates a memory effect, consistent with enthalpy recovery.
- Single-step aging led to monotonic decreases in enthalpy and boson peak intensity.
- Double-step aging showed a concurrent increase to a maximum followed by a decrease in both enthalpy and boson peak intensity.
Conclusions:
- A direct link exists between slow structural relaxation and fast boson peak dynamics.
- The findings provide profound insights into the coupled dynamic behaviors in metallic glasses.
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