Frielinghaus Henrich, Dubey Purushottam S, Saha Debasish, Shin Eunjoo, Holderer Olaf, Sengers Jan V, Förster Stephan
Forschungszentrum Jülich GmbH, Jülich Center for Neutron Scattering JCNS-4 at MLZ, Lichtenbergstrasse 1, 85747 Garching, Germany.
Korea Atomic Energy Research Institute, 111, Daedeok-daero 989beon-gil, Yuseong-gu, Daejeon 34057, Republic of Korea.
Nanomaterials (Basel). 2024 Jun 29;14(13):1125. doi: 10.3390/nano14131125.
While Ising criticality in classical liquids has been firmly established both theoretically and experimentally, much less is known about criticality in liquids in which the growth of the correlation length is frustrated by finite-size effects. A theoretical approach for dealing with this issue is the random-field Ising model (RFIM). While experimental critical-exponent values have been reported for magnetic samples (here, we consider γ, ν and η), little experimental information is available for critical fluctuations in corresponding liquid systems. In this paper, we present a study on a binary liquid consisting of 3-methyl pyridine and heavy water in a very light-weight porous gel. We find that the experimental results are in agreement with the theoretical predictions from the RFIM.
虽然经典液体中的伊辛临界性在理论和实验上都已得到确凿证实，但对于关联长度的增长因有限尺寸效应而受阻的液体中的临界性，人们所知甚少。处理这个问题的一种理论方法是随机场伊辛模型（RFIM）。虽然已经报道了磁性样品的实验临界指数值（这里，我们考虑γ、ν和η），但关于相应液体系统中临界涨落的实验信息却很少。在本文中，我们对由3 - 甲基吡啶和重水组成的二元液体在一种非常轻质的多孔凝胶中的情况进行了研究。我们发现实验结果与RFIM的理论预测相符。
