Synthesis And Characterization Of Novel Nanoporous Materials

Nanoporous materials has many excellent features in the electricity, light and magnetic aroused people’s attention.in recent years.Therefore, Especially the study of nanoporous thin-film materials has great significance whether in theory or application. in view of this, Porous anodic aluminium oxide（AAO） template was fabricated by two-step anodizationt.Severalmetal oxides nanoporous films prepared bymagnetron sputtering equipment in the AAO template.and using X-ray diffraction （XRD）, scanning electron microscopy（SED） and multi-functional scanning probe microscopy （SPM） characterized structureand morphology,Composition and physical properties of the samples were tested using X-ray Energy dispersive spectroscopy （EDS） and the physical parameters of the measurementsystem （PPMS）. The results are as follows:1). Studied the relationship between the AAO template and the preparation conditions,got the high regularity of the AAO template; and gives a new method to remove thealuminum and the barrier layer, and obtained the double pass of the AAO template,which Laid the foundation for future research.2).Use of the double-pass of the AAO template by magnetron sputtering obtaineddeposition Ag film.Characterization found by the SEM results of Agfilm obtained by physical stripping method than Chemical stripping method is more orderly,the surface was more smooth.through Ag inverted membrane morphology characterization bySEM and SPM, the Ag film with nano-pore structure, and the holes in a wide-narrowstructure, and then summed up the growth process of the preparation of nano-pore structure ofthe Ag film. Also, explore different sputtering time, the various sputtering power invertedmembrane preparation of nano-pore structure of Ag. Found that when the sputtering power of15W, the sputtering time greater than the750s is an almost continuous film.3).magnetron sputtering Fe nanofilm in the AAO membrane were characterized by SEMof the Fe film surface and cross section,and the images show that the Fe films with nano-porestructure and the growth rateofabout20s/nm. through the SQUID testing for its magnetic andProve that Ag Fe Ag nano-film has a typical sandwichstructure, and the presence ofnano-porous structure XRD patterns of characterization indicates that Ag,Fe diffraction peak. Prepared under this condition AgFeAg nanofilm which MFM domainimage shows themagnetic moment of the vortex arrangement along the hole wall. Found thatwhen the sputtering power of15W, the sputtering time greater than the5000s is a basic continuous film.4) Fe nano-films were depoited on nanoporous Ag film by magnetron sputteringtechniques to prevent Fe surface from being oxidating.Prepared AgFeAg nanofilm by SEMon the sample surface and section morphology characterization prove AgFeAg nano-film hasa typical sandwich structure, and the presence of nano-porous structure. XRD patterns ofcharacterization indicates that the diffraction peaks of Ag, Fe. MFM images show magneticdomains arranged along the hole wall vortex magnetic moment in the preparation conditionsAgFeAg nanofilm. However, due to the presence of hollow, there isno generation of the vortex core.5). TiO₂nano-films were depoited on nanoporous AAO template by magnetron sputtering techniques. The TiO₂films were characterized to be anatase by EDS and XRD, and preferential growth along the （101） direction. Choose a different power sputtering, SEM characterization results show that when the sputtering power of60W, the resulting nano-pore structure of TiO₂thin films, arranged in neat rows, smooth holes without crossover phenomenon. The grain size has increased after annealing the samplemorphology, However, the sample morphology,crystal structure were not big changes,further proof of that generated under the conditions of nano-porous structure of TiO₂film crystallinity and highstability...