Novel phase transformation in ZnO nanowires under tensile loading

被引：170
作者：
Kulkarni, Ambarish J.
Zhou, Min [1 ]
Sarasamak, Kanoknan
Limpijumnong, Sukit
机构：
[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
[2] Suranaree Univ Technol, Sch Phys, Nakhon Ratchasima, Thailand
[3] Natl Synchrotron Res Ctr, Nakhon Ratchasima, Thailand
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.97.105502
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We predict a previously unknown phase transformation from wurtzite to a graphitelike (P6(3)/mmc) hexagonal structure in [0110]-oriented ZnO nanowires under uniaxial tensile loading. Molecular dynamics simulations and first principles calculations show that this structure corresponds to a distinct minimum on the enthalpy surfaces of ZnO for such loading conditions. This transformation is reversible with a low level of hysteretic dissipation of 0.16 J/m(3) and, along with elastic stretching, endows the nanowires with the ability to recover pseudoelastic strains up to 15%.
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页数：4
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