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采用射频磁控溅射技术在Si（111）衬底上制备了未掺杂ZnO薄膜和Nd及其与Fe,Mn共掺杂ZnO薄膜.通过XRD分析表明，未掺杂ZnO薄膜沿c轴择优生长，掺杂ZnO薄膜偏离了正常生长，薄膜为纳米多晶结构.应用AFM观测所有薄膜的表面形貌，掺杂使ZnO薄膜表面粗糙.室温光致发光谱显示，薄膜出现了395?nm的强紫光和495?nm的弱绿光带.Nd掺杂ZnO薄膜的PL谱线峰值强度减弱，Nd与Fe...
Nd:YAG晶体1.064 μm受激发射截面随温度变化特性研究
Nd:YAG晶体 受激发射截面 荧光光谱 温度依赖性
2007/12/9
测量了Nd:YAG晶体从－70℃到+80℃不同温度下的荧光发射光谱和荧光寿命,计算了该晶体在不同温度下1.064 μm受激发射截面,首次获得在此温度变化范围内受激发射截面随温度的线性变化关系
在 LiNbO3中掺进In2O3和Nd2O3, 以Czochralski技术生长了In∶Nd∶LiNO3晶体. 通过光斑畸变法测得In∶Nd∶LiNbO3晶体的光损伤阈值为1.98×104 W/cm2, 比Nd∶LiNbO3晶体的1.6×102 W/cm2高两个数量级以上;晶体吸收光谱的测试表明, In∶Nd∶LiNbO3晶体的吸收边相对Nd∶LiNbO3晶体发生紫移. 研究了In∶Nd∶LiNb...
Physical Properties of Holmium Promoted Superconductivity in Nd-Doped YBCO HTC-Superconductors
Superconductors X-ray IR-spectra YBCO Ho Nd
2010/4/12
Samples of the nominal composition (Y0.5Nd0.5-xHox) Ba2Cu3O7- d , 0 \le x \le 0.5, have been prepared using the conventional solid state reaction. The effect of holmium and neodymium substitution on e...
Cation Distribution and Magnetisation Study of Nd+3 Substituted Zn-Mg Ferrites
Polycrystalline Ferrite Cation distribution Magnetisation Weighted interaction Curie Temperature
2010/4/15
Polycrystalline ferrites ZnxMg1-xFe2-yNdyO4 (x = 0.00, 0.20, 0.40, 0.80 and 1.00; y = 0.00, 0.05 and 0.10) were prepared by standard ceramic method. Thecompositions,oncharacterisation by X-ray diffrac...
Alloying of AISI 1008 Steel Surfaces by 10ms Nd: YAG Laser Pulses
AISI 1008 Steel Surfaces 10ms Nd laser surface alloying
2010/4/19
Hardened surfaces were produced on AISI 1008 steel through a laser surface alloying (LSA) technique. Mixture of pure Boron, Silicon, and Carbon powders of the same grain size were deposited on the sub...
Feasibility of Fabrication of Heteroepitaxial Gex Si1-x/Si(111) structure by Pulsed Nd: YAG Laser
Heteroepitaxial Gex Si1-x/Si(111) Pulsed Nd: YAG Laser
2010/4/15
Heteroepitaxial Gex Si1-x alloy layers have been formed by 10 ms and 300 m s laser pulse induced mixing of pure germanium films and Si(111) substrates where Ge films of thickness (500-1250) Å ar...