典型双原子分子晶体的高压解离和单原子相

李全; 马琰铭

doi:10.11858/gywlxb.2013.03.001

典型双原子分子晶体的高压解离和单原子相

doi: 10.11858/gywlxb.2013.03.001

李全^1,2,
马琰铭^1, ,

1.
吉林大学超硬材料国家重点实验室,吉林长春 130012；
2.
吉林大学材料科学与工程学院，吉林长春 130012

详细信息

通讯作者:
马琰铭 E-mail:mym@jlu.edu.cn

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出版历程
- 收稿日期: 2013-04-23
- 修回日期: 2013-05-09
- 发布日期: 2013-06-15

High Pressure Dissociation of Typical Diatomic Molecular Solids and Their Atomic Phases

LI Quan^1,2,
MA Yan-Ming^{1
, ,}

1.
State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
2.
College of Materials Science and Engineering, Jilin University, Changchun 130012, China

摘要

摘要: 高压可以有效地改变材料内部原子间的相互作用（如电子轨道重叠、化学成键、电荷分布等），进而改变材料的晶体结构、力学、热学、光学、电学等宏观物理性质。一百多年来，实验压力极限和高压理论方法的不断突破推动着高压学科的快速发展。在高压科学中，典型非极性双原子分子晶体的高压解离研究无疑是挑战高压极限的热点问题，也是20世纪高压物理重点解决的关键问题。针对元素周期表中质量最轻的H2、O2和N2 3种典型双原子共价非极性分子晶体的高压解离行为进行讨论，具体分析了解离产生的物理机制，评述了分子解离后形成的单原子相。
- 高压 /
- 金属氢 /
- 分子晶体 /
- 高压解离机制 /
- 结构相变 /
- 晶体结构
Abstract: High pressure can effectively modify the inter-atomic interaction of materials (i.e., the electron orbital overlap, chemical bonding, and electron charge distribution of materials), and further the crystal structures, mechanical, thermal, optical and electrical properties of materials. For more than one century, the progress in experimental generation of highest pressure and the development of advanced theoretical method have significantly moved forward the high pressure science. One of the most challenging research topics under high pressure is targeted to the investigation of pressure induced diatomic molecular dissociation. This article reviewed the high pressure dissociation of typical diatomic molecular solids of H2, O2 and N2 and their atomic phases reported in the literature, and the dissociation mechanisms were also discussed.
- high pressure /
- metallic hydrogen /
- molecular crystal /
- molecular dissociation /
- phase transition /
- crystal structure

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