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from this simulation shown in Fig.4, which is because reducing of initial melt temperature will increase the degree of undercooling and spur the fast growth of crystal. The final length of primary... are the coldest parts of the dendrite due to the large curvature here. The maximum of the temperature during the crystal growth varies with space and time. The Fig.2 Sequence of four times slices shown......
; whisker; oxidation; crystal growth 1 Introduction Zinc oxide (ZnO), an exceptionally important semiconductor with wide gap energy (3.37 eV), large exciton banding energy (60 meV) at room.... Growth and optical properties of single-crystal tubular ZnO whiskers [J]. Applied Physics Letters, 2003, 82: 1401-1403. [10] HUANG M H, WU Y, FEICK H, TRAN N, WEBER E , YANG P. Catalytic growth of zinc......
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Growth of Yb∶YAB Crystal and Its Laser Performance 李静1,王继扬1,胡晓波1,刘耀岗1 (1.State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, China) Abstract:Single crystal of YbxY1-xAl3.... By enhancing the incident-pump-power, 1.1 W cw green output can be reached. Key words:rare earths; laser crystal; self-frequency-doubling crystal; tunable wavelength; [全文内容正在添加中] ......
Growth and optical properties of Pr~(3+):La_2CaB_(10)O_(19) crystal WU Yicheng1,ZU Yanlei1,ZHANG Jianxiu1,FU Peizhen1 (1.Beijing Center for Crystal Research and Development,Key Laboratory...; crystal growth; spectroscopic properties; rare earths; [全文内容正在添加中] ......
Study on Lattice Parameter Variance and Eutectic Reaction during Crystal Growth of Nd,Cr∶GSGG by Czochralksi Method Shao Shufang1,Sun Dunlu1,Gu Changjiang1,Yin Shaotang1,Zhang Qingli1 (1.Crystal Laboratory, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China) Abstract:During the crystal growth of Nd, Cr∶GSGG by Czochralski method, in some cases......
film can induce HAP crystal with different growth style and crystal morphology. The HAP induced by the film with -NH2 head groups is the nano-platelet crystal with regular orientation and order array. On the film with -SO2-3 head groups, radiated growth style of HAP crystal is mediated. While the HAP crystal induced by the film with -PO3-4 head groups has neither regular orientation nor order......
Growth and characterization of Nd:Sr0.95Ba0.05WO4 single crystal高利红,林树坤,孙小娟,陈建中摘 要:Synthesis of polycrystalline Nd:Sr0.95Ba0.05WO4 by means of liquid... group.Transparent Nd:Sr0.95Ba0.05WO4 single crystal could be obtained along c-axis by Czochralski method from the synthesized polycrys-talline material.As the transmittance of Sr0.95Ba.005WO4 single crystal......
for ADP crystals. When the supersaturation is low, the advance of growth steps on prismatic face can be blocked by ethanol or impurities, the crystal morphology is changed from the tetragonal prism to shuttle (i.e., the tapered shape). The tapering formation of ADP crystallites was structurally studied in a novel view. Key words:crystal structure; chemical bond; growth habit; ADP; hydrogen bond......