کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7909952 | 1510847 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrical properties, defect chemistry and local lattice relaxation in Nb2O5 modified 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 ferroelectrics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrical properties, defect chemistry and local lattice relaxation in Nb2O5 modified 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 ferroelectrics Electrical properties, defect chemistry and local lattice relaxation in Nb2O5 modified 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 ferroelectrics](/preview/png/7909952.png)
چکیده انگلیسی
Single crystals of x at.% Nbâ¯+â¯0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 (x%-Nb:NBT-6BT, xâ¯=â¯0.12, 0.23, and 0.48) show improved ferroelectric and piezoelectric properties. In particular, the large piezoelectric constant (d33â¯=â¯532â¯pC/N) and high field-induced strains (Smaxâ¯=â¯0.57%) in 0.23%-Nb:NBT-6BT single crystal demonstrate its promising application potential. The underlying mechanisms were investigated directively by atomistic scale simulations. We found that, Nb5+ cations prefer to substitute Ti4+ cations on B-site and will first fill up the oxygen vacancies generated due to the loss of Bi2O3 and/or Na2O. Higher concentration of Nb2O5, however, will be compensated by Ti and/or Bi vacancies. The ions positions surrounding the defect center(s) were identified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 156, November 2018, Pages 32-36
Journal: Scripta Materialia - Volume 156, November 2018, Pages 32-36
نویسندگان
Haiwu Zhang, Hong Yan, Xiaobing Li, Haosu Luo,