کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1481581 | 1510484 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced 2.0 μm emission in oxyfluoride glass-ceramics containing nanocrystals MF2 (MF3): Ho3+,Tm3+ (M = Ca, Ba, and La)
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced 2.0 μm emission in oxyfluoride glass-ceramics containing nanocrystals MF2 (MF3): Ho3+,Tm3+ (M = Ca, Ba, and La) Enhanced 2.0 μm emission in oxyfluoride glass-ceramics containing nanocrystals MF2 (MF3): Ho3+,Tm3+ (M = Ca, Ba, and La)](/preview/png/1481581.png)
چکیده انگلیسی
Transparent glass-ceramics containing MF2(MF3):Ho3+,Tm3+ (M = Ca, Ba, and La) nanocrystals have been prepared by melt quenching and subsequent thermal treatment. X-ray diffraction and transmission electron microscopy analysis confirmed the precipitation of MF2 (MF3) nanocrystals among the glass matrix. Energy-dispersive X-ray spectroscopy results evidenced the incorporation of Tm3+ and Ho3+ into the MF2 nanocrystals. Intense 2.0 μm emission originating from the Ho3+: 5I7 â 5I8 transition was achieved upon excitation with 808 nm laser diode. A large ratio of the forward Tm3+ â Ho3+ energy transfer constant to that of the backward process indicated high efficient energy transfer from Tm3+ (3F4) to Ho3+ (5I7), and benefited from the reduced ionic distances of Tm3+-Tm3+ and Tm3+-Ho3+ pairs and low phonon energy environment with the incorporation of rare earth ions into the precipitated MF2 nanocrystals. The results indicate that oxyfluoride glass-ceramic is a promising candidate for 2.0 μm laser.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 357, Issues 11â13, June 2011, Pages 2278-2281
Journal: Journal of Non-Crystalline Solids - Volume 357, Issues 11â13, June 2011, Pages 2278-2281
نویسندگان
W.J. Zhang, Q.J. Chen, Q.Y. Zhang, Z.H. Jiang,