کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1517415 | 1511604 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stiffening of nanoscale anatase Ti0.9Zr0.1O2 upon multiple compression cycles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Stiffening of nanoscale anatase Ti0.9Zr0.1O2 upon multiple compression cycles Stiffening of nanoscale anatase Ti0.9Zr0.1O2 upon multiple compression cycles](/preview/png/1517415.png)
چکیده انگلیسی
The compression behavior of nanoscale Zr-doped anatase was studied by means of a diamond anvil cell experiment with alternating cycles of compression and decompression in the stability field of anatase (up to 13Â GPa). We found that multiple cycles of compression lead to stiffening of the material: Precompressed samples of nanoanatase Ti0.9Zr0.1O2 have a higher bulk modulus (K0=249(9) and 266(6)Â GPa) compared with the sample when compressed for the first time (K0=211(7)Â GPa). Upon compression, the crystallite size remains the same and the crystalline areas are free of defects. After the experiment, the crystallites are surrounded by amorphous rims, confirming the theoretical prediction by Pischedda et al. [Ultrastability and enhanced stiffness of similar to 6Â nm TiO2 nanoanatase and eventual pressure-induced disorder on the nanometer scale, Phys. Rev. Let. 96 (2006) 035509] for nanoscale anatase, but yielding much lower pressures (12Â GPa) for the onset of partial amorphization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 69, Issue 9, September 2008, Pages 2230-2233
Journal: Journal of Physics and Chemistry of Solids - Volume 69, Issue 9, September 2008, Pages 2230-2233
نویسندگان
E. Holbig, L. Dubrovinsky, N. Miyajima, V. Swamy, R. Wirth, V. Prakapenka, A. Kuznetsov,