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'Crystal Genes' in Metallic Liquids and Glasses.

ABSTRACT: We analyze the underlying structural order that transcends liquid, glass and crystalline states in metallic systems. A genetic algorithm is applied to search for the most common energetically favorable packing motifs in crystalline structures. These motifs are in turn compared to the observed packing motifs in the actual liquid or glass structures using a cluster-alignment method. Using this method, we have revealed the nature of the short-range order in Cu64Zr36 glasses. More importantly, we identified a novel structural order in the Al90Sm10 system. In addition, our approach brings new insight into understanding the origin of vitrification and describing mesoscopic order-disorder transitions in condensed matter systems.

SUBMITTER: Sun Y

PROVIDER: S-EPMC4814814 | biostudies-other | 2016 Mar

REPOSITORIES: biostudies-other

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'Crystal Genes' in Metallic Liquids and Glasses.

Sun Yang Y Zhang Feng F Ye Zhuo Z Zhang Yue Y Fang Xiaowei X Ding Zejun Z Wang Cai-Zhuang CZ Mendelev Mikhail I MI Ott Ryan T RT Kramer Matthew J MJ Ho Kai-Ming KM

Scientific reports 20160331

We analyze the underlying structural order that transcends liquid, glass and crystalline states in metallic systems. A genetic algorithm is applied to search for the most common energetically favorable packing motifs in crystalline structures. These motifs are in turn compared to the observed packing motifs in the actual liquid or glass structures using a cluster-alignment method. Using this method, we have revealed the nature of the short-range order in Cu64Zr36 glasses. More importantly, we id ...[more]

PMID: 27030071

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