Zobrazeno 1 - 10
of 116
pro vyhledávání: '"XIQI FENG"'
Publikováno v:
Crystals, Vol 12, Iss 9, p 1257 (2022)
The color of yellow sapphire from Africa characterized by high iron content and low levels of other transition metal elements was changed from yellow to grayish-blue after high-temperature reduction annealing. Before reduction annealing, the optical
Externí odkaz:
https://doaj.org/article/7cb9d506390640208e7638435ba78644
Publikováno v:
Journal of the American Ceramic Society. 104:966-973
Publikováno v:
Journal of Alloys and Compounds. 768:1058-1063
A new optical absorption band centered at 356 nm was observed in Co/Ti co-doped synthetic corundum in ultraviolet (UV) region while it doesn't exist in corundum single doped with cobalt or titanium. It is featured with high optical absorption intensi
Publikováno v:
Optical Materials. 69:214-218
Y 3+ admixing Lu 3 Al 5 O 12 :Pr ceramics are fabricated successfully by the solid state reaction method and further optimized by an air-annealing process. Optical absorption, photoluminescence spectra and scintillation properties such as radiolumine
Autor:
Huamin Kou, Carmelo D'Ambrosio, Xiqi Feng, Shuping Liu, Chen Hu, Yubai Pan, Martin Nikl, Jiang Li, Vladimir Babin, Jiri Mares
Publikováno v:
Optical Materials. 64:245-249
Monovalent Li+ codoped Lu3Al5O12:Ce (LuAG:Ce) optical ceramics were fabricated by solid state reaction method and further optimized by an air-annealing process. Optical absorption, radioluminescence spectra and scintillation properties such as light
Autor:
Vladimir Babin, Alena Beitlerova, Yihua Huang, Yubai Pan, Martin Nikl, Xiqi Feng, Yanping Zeng, Yun Shi, Shuping Liu, Jiri Mares, Carmelo D'Ambrosio
Publikováno v:
Journal of Luminescence. 169:72-77
Non-stoichiometric Lu 3+ x Al 5 O 12 :Ce (Lu 3+ x AG:Ce, x =1, 2, 3 and 4 %) ceramics were fabricated by solid state reaction method and further optimized by an air-annealing process. Absorption, luminescence spectra and scintillation characteristics
Publikováno v:
Optical Materials. 105:109881
In the optical absorption spectra of Ti:Al2O3 crystal doped with higher concentration of titanium and annealed with hydrogen, in addition to the main absorption band of T i A l 3 + (490 nm, 540 nm), a small absorption band of 390 nm and a concomitant
Publikováno v:
Optical Materials. 45:252-257
The process of hole and electron localization in LuAG:Ce,Mg ceramics is studied by electron spin resonance (ESR) and thermally stimulated luminescence (TSL). Hole traps, which are created by UV irradiation, are detected in the form of O− centers. M
Autor:
Xiqi Feng, Wanpeng Liu, Jingkun Guo, Huamin Kou, Yun Shi, Yubai Pan, Shuping Liu, Yongsheng Li, Jiang Li, Wei Wang
Publikováno v:
International Journal of Applied Ceramic Technology. 12:E249-E255
Gd2O2S: Pr, Ce, F ceramics with good scintillation properties were fabricated by pressureless sintering in nitrogen atmosphere. The effects of annealing temperature on the intensity of X-ray excited luminescence and light output were investigated. Th
Gd2 O2 S: Pr Scintillation Ceramics from Powder Synthesized by a Novel Carbothermal Reduction Method
Autor:
Yongsheng Li, Yubai Pan, Jingkun Guo, Yun Shi, Wei Wang, Shuping Liu, Heng Liu, Jiang Li, Xiqi Feng, Huamin Kou
Publikováno v:
Journal of the American Ceramic Society. 98:2159-2164
Gd2O2S: Pr ceramics were fabricated by spark plasma sintering using the powders synthesized by carbothermal reduction method. The calcination temperature, carbon content, and other preparation conditions of the powders are optimized. The results indi