Preparation of Double-Shelled BaTiO3 Composite Hollow Microspheres by Template Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.233-235.1981 ◽

2011 ◽

Vol 233-235 ◽

pp. 1981-1984

Author(s):

Hui Fang Xu ◽

Hai Jiao Zhang ◽

Jian Wei Song ◽

Bei Ling Gao

Keyword(s):

Ambient Pressure ◽

Hollow Microspheres ◽

Template Method ◽

In Situ Growth ◽

Sulfonated Polystyrene ◽

Structure And Morphology

The sulfonated polystyrene hollow microspheres (SPHS) with interpenetrated walls were used as templates. An in-situ growth of BaTiO3nanocrystals was conducted against SPHS templates at ambient pressure and 70°C. The structure and morphology of the resultant samples were investigated by XRD, SEM, TEM, FTIR and TGA. The results indicated that the composite hollow microspheres with diameter about 450 nm were double-shelled and composed of 30 nm cubic BaTiO3nanocrystals.

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Super-hydrophobic and photocatalytic antimicrobial activity of iodine-doped ZnO nanoarray films

New Journal of Chemistry ◽

10.1039/d1nj05706e ◽

2022 ◽

Author(s):

Yingxin Xiao ◽

Shitong Han ◽

HaiLing Xi ◽

Yubo JIn ◽

Huaxiang Lin ◽

...

Keyword(s):

Antimicrobial Activity ◽

Silicon Wafer ◽

In Situ Growth ◽

Structure And Morphology ◽

Growth Method ◽

Doped Zno

Iodine (I) doped ZnO nanoarray film (ZnO/ I-X) were prepared on silicon wafer by the in-situ growth method. The structure and morphology of the samples have been test by XRD,...

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Epitaxial growth manner and structure of superconducting oxide films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100173145 ◽

1990 ◽

Vol 48 (4) ◽

pp. 2-3

Author(s):

Yoshichika Bando ◽

Takahito Terashima ◽

Kenji Iijima ◽

Kazunuki Yamamoto ◽

Kazuto Hirata ◽

...

Keyword(s):

Ultrathin Films ◽

Film Surface ◽

High Energy ◽

Epitaxial Films ◽

Layer By Layer ◽

Initial Growth ◽

In Situ Growth ◽

High Quality ◽

Activated Reactive Evaporation

The high quality thin films of high-Tc superconducting oxide are necessary for elucidating the superconducting mechanism and for device application. The recent trend in the preparation of high-Tc films has been toward “in-situ” growth of the superconducting phase at relatively low temperatures. The purpose of “in-situ” growth is to attain surface smoothness suitable for fabricating film devices but also to obtain high quality film. We present the investigation on the initial growth manner of YBCO by in-situ reflective high energy electron diffraction (RHEED) technique and on the structural and superconducting properties of the resulting ultrathin films below 100Å. The epitaxial films have been grown on (100) plane of MgO and SrTiO, heated below 650°C by activated reactive evaporation. The in-situ RHEED observation and the intensity measurement was carried out during deposition of YBCO on the substrate at 650°C. The deposition rate was 0.8Å/s. Fig. 1 shows the RHEED patterns at every stage of deposition of YBCO on MgO(100). All the patterns exhibit the sharp streaks, indicating that the film surface is atomically smooth and the growth manner is layer-by-layer.

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