Change of Compressiblity at the Glass Transition and Prigogine-Defay Ratio in ZrTiCuNiBe Alloys

Journal Article · Thu Dec 31 23:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.580· OSTI ID:295560

Samwer, K; Busch, R; Johnson, W L ^[1]

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1. W. M. Keck Laboratory of Engineering Materials, California Institute of Technology, Pasadena, California 91125 (United States)

The change of the compressibility at the glass transition T{sub g} is evaluated from pressure experiments in the liquid and the glassy state of the ZrTiCuNiBe bulk metallic glass forming system. Via the enthalpy recovery method, we derive an increase of T{sub g} with pressure of 3.6 K/GPa . Comparing the changes of the compressibility, the specific heat capacity, and the thermal expansion coefficient at T{sub g} , we estimate for the first time a Prigogine-Defay ratio in metallic systems. This ratio is about 2.4 for the present alloy and compares well with known nonmetallic glass forming systems. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: California Institute of Technology
• DOE Contract Number: FG03-86ER45242
• OSTI ID: 295560
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BERYLLIUM ALLOYS
CALORIMETRY
COMPRESSIBILITY
COPPER ALLOYS
ENTHALPY
METALLIC GLASSES
NICKEL ALLOYS
PRESSURE DEPENDENCE
SPECIFIC HEAT
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
TITANIUM ALLOYS
ZIRCONIUM ALLOYS