کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1613307 | 1516317 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrafine nanocrystal precursor induced Jc increase of YBa2Cu3O7âx films prepared using advanced low-fluorine solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High-performance YBa2Cu3O7âx (YBCO) films were obtained on LaAlO3 (LAO) substrate using an advanced low-fluorine solution with Y-TFA and fluorine-free Ba and Cu salts as precursors. Macropore-free precursor films were obtained using a rapid pyrolysis with the heating rate of 5 °C/min from 200 °C to 310 °C. In the precursor film, CuO and Ba1âxYxF2+x (BYF) were formed as intermediate phases. Ultrafine nanocrystalline CuO particles were found embedded inside the crystalline BYF matrix, leading to the formation of high-quality YBCO film. The obtained single-coated YBCO films showed a better in-plane and out-of-plane texture, and a higher critical current density (over 8 MA/cm2 at 77 K, 0T), compared with the YBCO films produced from precursor consisting of larger CuO particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 576, 5 November 2013, Pages 265-270
Journal: Journal of Alloys and Compounds - Volume 576, 5 November 2013, Pages 265-270
نویسندگان
Yuanqing Chen, Fangyuan Yan, Caiyin You, Gaoyang Zhao, Yang Jiao,