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arXiv 1507.02665cond-mat.mtrl-sci
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冰VI向冰XV氢有序相变的复杂动力学

The complex kinetics of the ice VI to ice XV hydrogen ordering phase transition

Jacob J. Shephard, Christoph G. Salzmann

摘要:

使用差示扫描量热法从盐酸掺杂的冰VI到其氢有序对应物冰XV的可逆相变。在环境压力下冷却时,首先观察到快速氢有序化,随后是一个较慢的过程,表现为对初始尖锐的氢有序化的尾部。H2O和D2O冰XV中的残余氢无序被确定为冷却速率的函数。我们的结论是,这将是很难获得完全氢有序冰XV在环境压力下冷却。我们的新的实验结果进行了讨论的背景下,最近的计算工作冰XV。

英文摘要:

The reversible phase transition from hydrochloric-acid-doped ice VI to its hydrogen-ordered counterpart ice XV is followed using differential scanning calorimetry. Upon cooling at ambient pressure fast hydrogen ordering is observed at first followed by a slower process which manifests as a tail to the initial sharp exotherm. The residual hydrogen disorder in H2O and D2O ice XV is determined as a function of the cooling rate. We conclude that it will be difficult to obtain fully hydrogen-ordered ice XV by cooling at ambient pressure. Our new experimental findings are discussed in the context of recent computational work on ice XV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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