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- W2922146848 abstract "Abstract Controlling and manipulating defects in materials provides an extra degree of freedom not only for enhancing physical properties but also for introducing additional functionalities. In ferroelectric oxides, an accumulation of point defects at specific boundaries often deteriorates a polarization-switching capability, but on the one hand, delivers interface-driven phenomena. At present, it remains challenging to control oxygen vacancies at will to achieve a desirable defect structure. Here, we report a practical route to designing oxygen-vacancy distributions by exploiting the interaction with transition-metal dopants. Our thin-film experiments combined with ab-initio theoretical calculations for BiFeO 3 demonstrate that isovalent dopants such as Mn 3+ with a partly or fully electron-occupied e g state can trap oxygen vacancies, leading to a robust polarization switching. Our approach to controlling oxygen vacancy distributions by harnessing the vacancy-trapping capability of isovalent transition-metal cations will realize the full potential of switchable polarization in ferroelectric perovskite oxides." @default.
- W2922146848 created "2019-03-22" @default.
- W2922146848 creator A5000173902 @default.
- W2922146848 creator A5034002542 @default.
- W2922146848 creator A5063365383 @default.
- W2922146848 creator A5065976804 @default.
- W2922146848 date "2019-03-12" @default.
- W2922146848 modified "2023-10-11" @default.
- W2922146848 title "Ferroelectrics with a controlled oxygen-vacancy distribution by design" @default.
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- W2922146848 doi "https://doi.org/10.1038/s41598-019-40717-0" @default.
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