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Synthesis and nonlinear optical properties of single-crystalline KNb sub(3)O sub(8) nanowires
Ist Teil von
Nanotechnology, 2013-03, Vol.24 (8), p.085704-1-4
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Single-crystalline KNb sub(3)O sub(8) nanowires with widths of 100-300 nm and lengths up to tens of microns were synthesized by calcining Nb sub(2)O sub(5) powders in molten KC1 and K sub(2)SO sub(4). The phase of the products was determined by means of x-ray diffraction, and the morphology and structure were characterized by using scanning electron microscopy, transmission electron microscopy, high resolution transmission electron microscopy and selected area electron diffraction techniques. The growth direction of the KNb sub(3)O sub(8) obtained was determined to be the [001] crystallographic direction. Meanwhile, the polarization response of the second-harmonic generation (SHG) response was investigated. The as-synthesized nanowires clearly exhibited a SHG response, which means that the nanowires were an efficient nanoscale second-harmonic light source. The excellent nonlinear optical property of KNb sub(3)O sub(8) shows potential for application in nano-optical devices.