کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11015850 | 1781703 | 2019 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic behavior of BiVO4 material under mechanical studies
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The mechanical relaxation technique is applied to investigate the fundamental dynamic behavior of BiVO4 material. A prominent internal friction peak is observed around 430â¯Kâ¯at 1â¯Hz, which is actually composed of three sub-peaks (P1, P2 and P3 from low to high temperature). And the associated modulus anomalies can also be found in any of the samples. The peak P1 with activation energy E1 â¼ 3.20â¯eV is probably related to the stress-induced unequal positions of Bi3+ ions; while the main P2 peak with E2â¯=â¯0.91â¯eV is associated with a complex mechanism, which originates from the viscous motion of domain walls and the interaction of domain walls with oxygen vacancies; and the responsive P3 peak is resulted from the ferroelastic-paraelastic phase transition, accompanied by a minimum modulus value. Based on the relaxation process and crystalline structure of BiVO4, the motion model of ferroelastic domain walls and transport mechanism of diffusion are suggested. Our results pave the way for better understanding the intrinsic dynamic and multifunctional properties of BiVO4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 651-655
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 651-655
نویسندگان
He Lin, Haitao Zhang, Dongfang Pang, Youfu Zhou, Zhiguo Yi,