Anomalous system-size dependence of properties at the fragile-to-strong transition in a bulk-metallic-glass forming melt
Anomalous system-size dependence of properties at the fragile-to-strong transition in a bulk-metallic-glass forming melt
复制标题
大块金属玻璃成形熔体中从脆到强转变时性能的反常系统尺寸依赖性
DOI:
10.1016/j.commatsci.2018.09.047
复制
发表时间:
2018
影响因子:
3.3
通讯作者:
M. H. Müser
中科院分区:
文献类型:
--
作者:
S. V. Sukhomlinov;M. H. Müser
As many other glass formers do, bulk-metallic-glass (BMG) forming melts undergo a fragile-to-strong transition (FST), which is accompanied by a small but noticeable peak in the specific heat c p. Because of this peak, the FST is sometimes interpreted as a smeared-out phase transformation. Finite-size scaling analysis of peaks in c p allows the order of a phase transition to be accurately determined. This motivated us to study c p along with structural and dynamical properties of a ternary BMG former (Zr 0.606 Cu 0.29 Al 0.104) using computer simulations, in which the system size was varied in a well-controlled fashion. Our model system reproduces the typical, almost discontinuous cross-over between non-Arrhenius to Arrhenius-type dynamics, which defines the FST. However, in contrast to the expectations for a phase transformation, the larger the system the smaller the peak in c p. Other properties also reveal a size dependence, which is difficult to reconcile with the interpretation of the FST being a (smeared-out) phase transformation resulting from the competition between different local structures.
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影响因子:
3.5
作者:
E. Rössler;K. Hess;V. Novikov
通讯作者:
E. Rössler;K. Hess;V. Novikov
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
K. Hess;D. Dingwell;E. Rössler
通讯作者:
E. Rössler
影响因子:
3.7
作者:
Stolpe, Moritz;Jonas, Isabell;Busch, Ralf
通讯作者:
Busch, Ralf
影响因子:
16.6
作者:
Wei, Shuai;Yang, Fan;Busch, Ralf
通讯作者:
Busch, Ralf
影响因子:
2.4
作者:
Kivelson, D;Tarjus, G;Kivelson, SA
通讯作者:
Kivelson, SA