The incorporation of Fe impurities in hexagonal barium titanate is studied in the framework of density functional theory. Formation energies are calculated to find the most probable defect structure. The substitution of Fe at the two inequivalent Ti sites accompanied by oxygen vacancies in different positions is studied. Additionally, different charge states of defects are taken into account. The structural aspects of the different defects are also studied in detail. In summary, the theoretical results are in agreement with recent experimental results found by means of electron paramagnetic resonance.
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Univ Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Zhang, Xiang
Wang, Fei
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Univ Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Wang, Fei
Wu, Zhipeng
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Univ Nebraska Lincoln, Dept Elect & Comp Engn, Lincoln, NE USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Wu, Zhipeng
Lu, Yongfeng
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Univ Nebraska Lincoln, Dept Elect & Comp Engn, Lincoln, NE USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Lu, Yongfeng
Yan, Xueliang
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Univ Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Yan, Xueliang
Nastasi, Michael
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Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Nastasi, Michael
Chen, Yan
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Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Chen, Yan
Hao, Yifei
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Univ Nebraska Lincoln, Dept Phys & Astron, Lincoln, NE USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Hao, Yifei
Hong, Xia
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Univ Nebraska Lincoln, Dept Phys & Astron, Lincoln, NE USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Hong, Xia
Cui, Bai
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Univ Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
Univ Nebraska Lincoln, Nebraska Ctr Mat & Nanosci, Lincoln, NE USAUniv Nebraska Lincoln, Dept Mech & Mat Engn, Lincoln, NE 68588 USA