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  • 1
    Electronic Resource
    Electronic Resource
    Formation process of high Tc superconducting Bi-Pb-Ca-Sr-Cu-O thick films via melt solidification (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 2597-2599 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High Tc superconducting thick films Bi1.6Pb0.4Ca2Sr2Cu3Ox were prepared by the melt solidification process. The preparation conditions were optimized to obtain films with higher Tc. Rapid cooling of the molten samples to the heat treatment temperature of 855 °C produced superconducting films with a maximum Tc (zero) of 104 K. Slow cooling of the melt declined the superconducting properties of the films because of the formation of Ca2CuO3, which may prevent the formation of the 110 K phase, during cooling through the temperature range around 900 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104185
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  • 2
    Electronic Resource
    Electronic Resource
    Ferroelectricity of YMnO3 thin films prepared via solution (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 719-721 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have observed the ferroelectricity at room temperature in YMnO3 thin films prepared via solution. Precursor films of YMnO3 on Pt/sapphire or Y2O3/Si substrates were heat treated in vacuum or in air for controlling the crystallinity. X-ray diffraction measurements indicated that each film was a single phase of hexagonal YMnO3. While the film heat treated in air indicated an insufficient crystallinity, the film heat treated in vacuum showed a high crystallinity with a c-axis preferred orientation. The leakage current of the film heat treated in vacuum was at least three orders of magnitude lower than that heat treated in air. The ferroelectricity of the film heat treated in vacuum was confirmed in the capacitance–voltage measurement at room temperature due to its high crystallinity with the c-axis preferred orientation and the small leakage current. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124493
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  • 3
    Electronic Resource
    Electronic Resource
    Third harmonic generation from MOx-PbO-GaO1.5 ternary glasses (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 2060-2061 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Third harmonic generation from nonconventional MOx-PbO-GaO1.5 (M=Ti,Nb,W) glasses have been measured. The nonlinear susceptibility, χ(3), of these glasses at 0.635 μm are about 30 times higher than that of SiO2 glass at the same wavelength. It has been found that TiO2 is most effective in increasing refractive index and χ(3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107089
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  • 4
    Electronic Resource
    Electronic Resource
    Super-Water-Repellent Al2O3 Coating Films with High Transparency (1997)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 80 (1997), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: We have prepared transparent, super-water-repellent coating films of alumina on glass plates by a combination of geometric and chemical approaches. The contact angle for water in the films was 165° and the transmittance for visible light was higher than 92%. A roughness of 20 to 50 nm was obtained, which is too small to scatter visible light, while the degree of roughness was great enough to enhance the water-repellent properties together with the chemical effect of a fluorine-containing agent and gave a super-water-repellent surface. The coatings have great potential for practical applications such as eyeglasses, cover glasses for solar cells, windshields of automobiles, and so on.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1997.tb02943.x
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  • 5
    Electronic Resource
    Electronic Resource
    Microstructure and Dielectric Properties of YMnO3 Thin Films Prepared by Dip-Coating (1998)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 81 (1998), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: YMnO3 thin films with Y/Mn ratios from 1.00/1.05 to 1.00/0.90 were prepared by dip-coating from solution, in which starting materials were refluxed, and the effects of the Y/Mn ratio on the structure and dielectric properties of YMnO3 thin films were investigated. XRD measurements indicated that the films with the Y/Mn ratios in this study were a single phase of polycrystalline YMnO3. The lattice constants along the a-axis and c-axis lengthened with an increase in the Y/Mn ratio. FE-SEM micrographs of the films showed that the surface of the films became smoother and denser with an increase in the Y/Mn ratio. YMnO3 thin films with good dielectric properties were obtained with an Y/Mn ratio of 1.00/0.90, which gave the smoothest and densest microstructure and the smallest leakage current.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1998.tb02491.x
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  • 6
    Electronic Resource
    Electronic Resource
    Lowering of Preparation Temperatures of Anatase Nanocrystals-Dispersed Coatings via Sol–Gel Process with Hot Water Treatment (2005)
    Oxford, UK : Blackwell Science Inc
    Journal of the American Ceramic Society 88 (2005), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A longer period of time was necessary to form anatase nanocrystals on silica–titania gel coatings at lower hot water treatment temperature, whereas considerable amounts of anatase nanocrystals were observed even at 38°C after a treatment of 65 h. The coatings pre-heated at 60°C for 1 h and treated with hot water at 55°C for 15 h showed higher photocatalytic activity for methylene blue bleaching than the coatings prepared under the conditions with higher processing temperature close to 100°C. Such a high photocatalytic activity of the coatings obtained through low processing temperatures can be ascribed to a large specific surface area of the coatings and a smaller crystal size of the precipitated anatase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1551-2916.2005.00313.x
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  • 7
    Electronic Resource
    Electronic Resource
    Formation Process of Super-Water-Repellent Al2O3 Coating Films with High Transparency by the Sol–Gel Method (1997)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 80 (1997), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Alumina thin films with a roughness of 20 to 50 nm were formed by immersing porous alumina gel films prepared by the sol-gel method in boiling water. When hydrolyzed fluoroalkyltrimethoxysilane was coated on the alumina films, the contact angle for water was increased with an increase of immersion time, and immersion for 30 s was long enough to give super-water-repellency and high transparency; the contact angle for water of the film was 165° and the transmittance for the visible light was higher than 92%. It was found that the surface of the alumina gel films immersed in boiling water consisted of boehmite crystals. It was shown that the existence of air in the hydrophobic pores on the surface caused the super-water-repellency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1997.tb03253.x
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation and Proton Conductivity of Surfactant-Templated Mesoporous Silica Gels Impregnated with Protonic Acids (2000)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 83 (2000), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Surfactant-templated mesoporous silica gel that was impregnated with various protonic acids has been prepared, and we propose this material as a new type of proton conductor. The conductivity of the mesoporous silica gel that was impregnated with 5.0M H2SO4 was ∼1 × 10−4 S/cm at room temperature in a dry nitrogen-gas atmosphere after drying in vacuo at room temperature; this value was four orders of magnitude greater than that of silica gel that was prepared via the conventional sol–gel method and impregnated with H2SO4. The amount of impregnated H2SO4 in the mesoporous silica gel was ∼2.5 times larger than that of impregnated H2SO4 in the conventional silica gel. The H2O molecules in the mesoporous silica gel that was impregnated with H2SO4 remained in the pores of the gel, even after drying in vacuo at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.2000.tb01674.x
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  • 9
    Electronic Resource
    Electronic Resource
    Direct Formation of Zn-Al Layered Double Hydroxide Thin Films Intercalated with Various Organic Anions through the Sol-Gel Method with Hot Water Treatment (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 124-126 (June 2007), p. 635-638 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Zn-Al layered double hydroxide (LDH) thin films intercalated with various organicanions were prepared by immersion of sol-gel derived amorphous Al2O3-ZnO thin films in hotwater containing organic salts like sodium dodecyl sulfate (SDS), sodium p-toluenesulfonate, andbenzenecarboxylates. In all the systems, extended interlayer spacing of the Zn-Al LDH wasobserved after immersion in distilled water with the organic salts in comparison to the LDH withcarbonate anions, indicating that we have succeeded in direct formation of Zn-Al LDH films withvarious organic anions on the substrates. It is suggested that divalent anions such as terephthalateion have higher selectivity than monovalent anions
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.124-126.635.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Electrophoretic Deposition of Sol-Gel Derived V〈sub〉2〈/sub〉O〈sub〉5〈/sub〉 Microparticles and Its Application for Cathodes for Li-Secondary Batteries (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 314 (July 2006), p. 107-114 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: V2O5 microparticles of 0.3-0.6 μm in diameter were prepared from VO(O-C3H7i)3 in anethanol solution by the sol-gel method. The addition of poly(ethylene glycol) and acetyl acetone intothe sols was effective to control the size and spherical shape of V2O5 particles. The particles thusobtained were amorphous having a layered structure with hydrated water, and transformed into anorthorhombic phase at 500°C through a glassy state. The microparticles were positively charged inI2-containing acetone, so that they were electrophoretically deposited on the cathode with applied DCvoltage. The prepared particles were used as a cathode in an electrochemical cell with a lithium metalas an anode. Discharge capacity of a rechargeable cell of Li / LiPF6 (ethylene carbonate + diethylenecarbonate) / V2O5 -based composite was 110-180 mAh g-1 when the potential range and currentdensity were 2-4 V and 0.1 mAcm-2, respectively
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.314.107.pdf
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