Microscopic dynamics of liquid aluminum oxide

被引：70

作者：

Sinn, H

Glorieux, B

Hennet, L

Alatas, A

Hu, M

Alp, EE

Bermejo, FJ

Price, DL

Saboungi, ML ^{[1
]}

机构：

[1] Univ Orleans, CNRS, Ctr Rech Mat Divisee, F-45071 Orleans 2, France

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[3] Inst Sci Genie Mat & Proc, F-66100 Perpignan, France

[4] CNRS, Ctr Rech Mat Hauts Temp, F-45071 Orleans, France

[5] Univ Basque Country, CSIC, Dept Elect & Elect, Bilbao 48080, Spain

来源：

SCIENCE | 2003年 / 299卷 / 5615期

关键词：

D O I：

10.1126/science.1080950

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Collective excitations have been observed in liquid aluminum oxide at high temperatures by combining a containerless sample environment with inelastic x-ray scattering. The excitation spectra show a well-defined triplet peak structure at lower wave vectors Q (1 to 6 nanometers(-1)) and a single quasi-elastic peak at higher Q. The high-Q spectra are well described by kinetic theory. The low-Q spectra require a frequency-dependent viscosity and provide previously unknown experimental constraints on the behavior of liquids at the interface between atomistic and continuum theory.

引用

页码：2047 / 2049

页数：3

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