We present the pressure dependence of elastic properties of the wurtzite phase of ZnO undergoing wurtzite to the rocksalt phase transition. A simple Landau theory is developed to describe the structural phase transition between wurtzite to rocksalt phases observed in ZnO. We have defined the necessary order parameter of the wurtzite to the rocksalt phase transition. We present a detailed analysis of the pressure dependence of the elastic and shear constants of the wurtzite phase of ZnO. The theoretical predictions are in the line with experimental results.
机构:
Columbia Univ, Dept Civil Engn & Engn Mech, Columbia Nanomech Res Ctr, New York, NY 10027 USAColumbia Univ, Dept Civil Engn & Engn Mech, Columbia Nanomech Res Ctr, New York, NY 10027 USA
Cao, Guoxin
Chen, Xi
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Columbia Univ, Dept Civil Engn & Engn Mech, Columbia Nanomech Res Ctr, New York, NY 10027 USAColumbia Univ, Dept Civil Engn & Engn Mech, Columbia Nanomech Res Ctr, New York, NY 10027 USA
机构:
China Univ Min & Technol, Sch Sci, Dept Phys, Xuzhou 221008, Peoples R ChinaChina Univ Min & Technol, Sch Sci, Dept Phys, Xuzhou 221008, Peoples R China
Shi Li-Wei
Duan Yi-Feng
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China Univ Min & Technol, Sch Sci, Dept Phys, Xuzhou 221008, Peoples R ChinaChina Univ Min & Technol, Sch Sci, Dept Phys, Xuzhou 221008, Peoples R China
Duan Yi-Feng
Qin Li-Xia
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China Univ Min & Technol, Sch Sci, Dept Phys, Xuzhou 221008, Peoples R ChinaChina Univ Min & Technol, Sch Sci, Dept Phys, Xuzhou 221008, Peoples R China