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Molecular dynamics of NaCl melting under pressure

机译:氯化钠在压力下熔融的分子动力学

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We have performed one-phase molecular dynamics (MD) simulations to investigate the melting curve of NaCl over a wide range of pressures. To ensure faithful MD simulations, two types of potentials, the shell-model (SM) and the two-body rigid-ion BornMayerHugginsFumiTosi (BMHFT) potentials, are fully tested. Compared with SM potential, the MD simulation with BMHFT potential is very successful in reproducing accurately the measured volumes of NaCl. The BMHFT potential can also produce a satisfactory melting curve, consistent with both experiments and two-phase simulations. Hence we recommend that the BMHFT should be the reliable potential for simulating high-pressure properties of NaCl.
机译:我们已经进行了单相分子动力学(MD)模拟,以研究NaCl在宽压力范围内的熔融曲线。为了确保忠实的MD模拟,已经对两种类型的电势,即壳模型(SM)势和两体刚度离子BornMayerHugginsFumiTosi(BMHFT)势进行了测试。与SM电势相比,具有BMHFT电势的MD模拟在成功重现所测量的NaCl体积方面非常成功。 BMHFT电位还可以产生令人满意的熔融曲线,这与实验和两相模拟都一致。因此,我们建议BMHFT应该是模拟NaCl高压特性的可靠潜力。

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