Volumetric study consistent with a glass-to-liquid transition in amorphous ices under pressure

被引：60

作者：

Seidl, Markus ^{[1
,2
]}

Elsaesser, Michael S. ^{[1
]}

Winkel, Katrin ^{[1
,3
]}

Zifferer, Gerhard ^{[2
]}

Mayer, Erwin ^{[3
]}

Loerting, Thomas ^{[1
]}

机构：

[1] Univ Innsbruck, Inst Phys Chem, A-6020 Innsbruck, Austria

[2] Univ Vienna, Dept Chem Phys, A-1090 Vienna, Austria

[3] Univ Innsbruck, Inst Gen Inorgan & Theoret Chem, A-6020 Innsbruck, Austria

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 10期

基金：

欧洲研究理事会; 奥地利科学基金会;

关键词：

HYPERQUENCHED WATER; INDUCED AMORPHIZATION; 1ST-ORDER TRANSITION; 1.9; GPA; BEHAVIOR; XII;

D O I：

10.1103/PhysRevB.83.100201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dilatometry experiments on low- and high-density amorphous ices up to 0.30 GPa are presented together with powder x-ray diffraction data. Repeated isobaric heating and cooling cycles reveal three competing processes: irreversible (micro) structural relaxation, reversible relaxation, and (irreversible) crystallization. The third and subsequent heating runs produce identical curves, i.e., irreversible relaxation is absent. We interpret the deviation from linear expansivity in these curves as the onset temperature of the volumetric glass-to-liquid transition (T(g, onset)) and report its dependence on pressure.

引用

页数：4

共 37 条

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