期刊
PHYSICAL REVIEW LETTERS
卷 98, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.98.107601
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Theoretical ab initio and experimental methods are used to investigate the [Bi(Zn1/2Ti1/2)O-3](x) [PbTiO3](1-x) solid solution. We find that hybridization between Zn 4s and 4p and O 2p orbitals allows the formation of short, covalent Zn-O bonds, enabling favorable coupling between A-site and B-site displacements. This leads to unusually large polarization, strong tetragonality, and an elevated ferroelectric to paraelectric phase transition temperature.
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