کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624096 | 989583 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Strong photoluminescence and good electrical properties in Eu-modified SrBi2Nb2O9 multifunctional ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bismuth layer-structured ferroelectric (BLSFs) ceramics of Sr1âxEux Bi2Nb2O9 (SBT-xEu, x=0.000, 0.002, 0.004, 0.006) were prepared by a conventional solid-state reaction method. All the samples have a bismuth oxide layered structure with a dense microstructure. The ferroelectric, piezoelectric, dielectric and optical properties of the ceramics were investigated. After Eu3+ doping, samples show a bright red photoluminescence upon blue light excitation of the 400-500 nm. Upon the excitation of 465 nm light, the materials have two intense emission bands peaking around 593 nm (yellow) and 616 nm (red). Meanwhile, good electrical properties with large piezoelectric constant d33 of 14 pC/N and large remnant polarization 2Pr of 11.97 μC/cm2 are obtained at x=0.006. Moreover, this material has a high Curie temperature (Tc=429 °C) and high resistivity, which makes the material resistant to thermal depolarization up to its Curie temperature. This feature indicates that the SBN-xEu ceramics have a latent use in high temperature applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 14849-14854
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 14849-14854
نویسندگان
Lei Yu, Jigong Hao, Zhijun Xu, Wei Li, Ruiqing Chu, Guorong Li,