Tetragonal allotrope of group 14 elements.

@article{Zhao2012TetragonalAO,
  title={Tetragonal allotrope of group 14 elements.},
  author={Zhisheng Zhao and Fei Tian and Xiao Dong and Quan Li and Qianqian Wang and Hui Wang and Xin Zhong and Bo Xu and Dongli Yu and Julong He and Hui-Tian Wang and Yanming Ma and Yongjun Tian},
  journal={Journal of the American Chemical Society},
  year={2012},
  volume={134 30},
  pages={12362-5}
}
Group 14 elements (C, Si, and Ge) exist as various stable and metastable allotropes, some of which have been widely applied in industry. The discovery of new allotropes of these elements has long attracted considerable attention; however, the search is far from complete. Here we computationally discovered a tetragonal allotrope (12 atoms/cell, named T12) commonly found in C, Si, and Ge through a particle swarm structural search. The T12 structure employs sp(3) bonding and contains extended… CONTINUE READING
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