排序方式: 共有7条查询结果,搜索用时 15 毫秒
1
1.
Ren-Jie Liu 《中国物理 B》2021,30(8):86104-086104
The defect evolution in InP with the 75 keV H+ and 115 keV He+ implantation at room temperature after subsequent annealing has been investigated in detail. With the same ion implantation fluence, the He+ implantation caused much broader damage distribution accompanied by much higher out-of-plane strain with respect to the H+ implanted InP. After annealing, the H+ implanted InP did not show any blistering or exfoliation on the surface even at the high fluence and the H2 molecules were stored in the heterogeneously oriented platelet defects. However, the He molecules were stored into the large bubbles which relaxed toward the free surface, creating blisters at the high fluence. 相似文献
2.
Hydrothermal synthesis and dielectric properties of chrysanthemum-like ZnO particles 总被引:1,自引:0,他引:1 下载免费PDF全文
By orthogonal design theory, technological parameters of
chrysanthemum-like ZnO particles prepared in a hydrothermal process
are optimized. This paper reports a set of technological
parameters for growing chrysanthemum-like ZnO particles on a large
scale. It investigates the morphologies and crystalline structures
of the as-synthesized three-dimensional ZnO particles with a scanning
electron microscope, x-ray diffractometer and transmission electron
microscope, and the possible growth mechanism on the three-dimensional ZnO
particles. The experimental results indicate that the values of
ε', ε ' and \tan δe gradually
increase in the X band with the improvement of the developmental level
of chrysanthemum-like ZnO particles, implying that the
electromagnetic wave absorbing property depends on the morphologies
of three-dimensional ZnO particles. 相似文献
3.
Ren-Jie Liu 《中国物理 B》2022,31(7):76103-076103
Integration of the high-quality GaSb layer on an Si substrate is significant to improve the GaSb application in optoelectronic integration. In this work, a suitable ion implantation fluence of 5×1016-cm-2 H ions for GaSb layer transfer is confirmed. Combining the strain change and the defect evolution, the blistering and exfoliation processes of GaSb during annealing is revealed in detail. With the direct wafer bonding, the GaSb layer is successfully transferred onto a (100) Si substrate covered by 500-nm thickness thermal oxide SiO2 layer. After being annealed at 200 ℃, the GaSb layer shows high crystalline quality with only 77 arcsec for the full width at half maximum (FWHM) of the x-ray rocking curve (XRC). 相似文献
4.
Effect of Sb-doping on the morphology and the dielectric properties of chrysanthemum-like ZnO nanowire clusters 下载免费PDF全文
Chrysanthemum-like ZnO nanowire clusters with different Sb-doping concentrations were prepared by using the hydrothermal process. The microstructures, morphologies, and dielectric properties of the as-prepared products were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission environment scanning electron microscope (FEESEM), and microwave vector network analyzer respectively. The results indicate that the as-prepared products are Sb-doped ZnO single crystallines with hexagonal wurtzite structure, the flower bud saturation degree Fd is obviously different from that of the pure ZnO nanowire clusters, the good dielectric loss property is found in Sb-doped ZnO products with low density, and the dielectric loss tangent tanδ e increases with the increase of the Sb-doping concentration in a certain concentration range. 相似文献
5.
Effect of Sb-doping on the morphology and dielectric properties of chrysanthemum-like ZnO nanowire clusters 下载免费PDF全文
Chrysanthemum-like ZnO nanowire clusters with different Sb-doping concentrations were prepared using a hydrothermal process. The microstructures, morphologies, and dielectric properties of the as-prepared products were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission environment scanning electron microscope (FEESEM), and microwave vector network analyzer respectively. The results indicate that the as-prepared products are Sb-doped ZnO single crystallines with a hexagonal wurtzite structure, the flower bud saturation degree F d is obviously different from that of the pure ZnO nanowire clusters, the good dielectric loss property is found in Sb-doped ZnO products with low density, and the dielectric loss tangent tanδ e increases with the increase of the Sb-doping concentration in a certain concentration range. 相似文献
6.
Effect of polyacrylamide on morphology and electromagnetic properties of chrysanthemum-like ZnO particles 下载免费PDF全文
Through hydrothermal process, the chrysanthemum-like ZnO particles
are prepared with zinc acetate dihydrate (Zn(CH3COO)2\cdot
2H2O) and sodium hydroxide (NaOH) used as main resources under
the different concentrations of surfactant polyacrylamide (PAM). The
microstructure, morphology and the electromagnetic properties of the
as-prepared products are characterized by high-resolution
transmission electron microscopy (HRTEM), field emission environment
scanning electron microscope (FEESEM) and microwave vector network
analyzer, respectively. The experimental results indicate that the
as-prepared products are ZnO single crystalline with hexagona
wurtzite structure, that the values of slenderness ratio L_d are
different in different PAM concentrations, and that the good
magnetic loss property is found in the ZnO products, and the average
magnetic loss tangent tanδu increases with PAM
concentration increasing, while the dielectric loss tangent
tanδ e decreases. 相似文献
7.
Effect of Mn-doping on the growth mechanism and electromagnetic properties of chrysanthemum-like ZnO nanowire clusters 下载免费PDF全文
Chrysanthemum-like ZnO nanowire clusters with different Mn-doping concentrations are prepared by a hydrothermal process. The microstructure, morphology and electromagnetic properties are characterized by x-ray diffractometer high-resolution transmission electron microscopy (HRTEM), a field emission environment scanning electron microscope (FEESEM) and a microwave vector network analyser respectively. The experimental results indicate that the as-prepared products are Mn-doped ZnO single crystalline with a hexagonal wurtzite structure, that the growth habit changes due to Mn-doping and that a good magnetic loss property is found in the Mn-doped ZnO products, and the average magnetic loss tangent tanδm is up to 0.170099 for 3% Mn-doping, while the dielectric loss tangent tanδe is weakened, owing to the fact that ions Mn2 + enter the crystal lattice of ZnO. 相似文献
1