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1.
Abstract— Preparative methods for forming chlorophyll a multilayers on glass plates were re-investigated in relation to deposition ratios, and by checking the stability of chlorophyll u in the multilayers spectrophotometrically and by thin-layer chromatography. The methods for measuring deposition ratios were also re-examined and the best conditions selected. 相似文献
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Multi-layered thin films, which consisted of metallic silver, GeSe3 glass, and silver oxyhalide superionic conductor glass were prepared. Photo- and electrochemical reaction of metallic silver with the chalcogenide glass layer was studied by optical absorbance and cyclic-voltammetry. Photo-doping of silver through the superionic glass layer was observed using evaporated AgI---Ag2MoO4 film and it was partly undoped by electrochemical treatment. However, no photo-doping was observed for the cell consisting of a AgI---AgPO3 dip-coated layer. The doped silver was dissolved into the GeSe3 layer during the photo-doping process. However, it formed another intermediate compound layer (probably silver selenide) during the electrodoping process. 相似文献
3.
Yoichi Sakai Ryo Omatsuzawa Iwao Sakazaki Sayaka Suzuki Hayato Hashino Takanobu Saito Takahiko Iriyama 《Hyperfine Interactions》2005,166(1-4):483-487
Samarium–iron intermetallic compounds were prepared by a melt spinning method with low and high wheel speeds, which resulted in a Th2Zn17-type and a TbCu7-type structure, respectively. Structure comparison between these types was investigated for Sm–Fe intermetallic compounds and their nitrides by 57Fe-Mössbauer spectroscopy. 相似文献
4.
A lifting is a map from the state of a system to that of a compound system, which was introduced in Accardi and Ohya (Appl. Math. Optim. 39:33–59, 1999). The lifting can be applied to various physical processes. 相似文献
5.
The glow discharge of a series of saturated fluorocarbons, CnF2n+2 (n = 1, 2, 4, 6, and 8), was studied with glass substrates which do not contain any hydrogen. It was found that the deposition rate was a function of the F/C ratio of the starting fluorocarbons. That is, fluorocarbons with higher F/C ratio, such as CF4 and C2F6, hardly polymerized, while fluorocarbons with lower F/C ratio, such as C8F18, polymerized as well as C2F4. After plasma exposure, the surface of glass substrate was characterized by measurements of water contact angle, water droplet rolling-off angle, and ESCA. Although all saturated fluorocarbon plasmas could alter the surface more hydrophobic than before, the deposited materials from fluorocarbons with higher F/C were not stable. Also, in plasmas with high F/C fluorocarbons, i.e., CF4 and C2F6, sputtering of the electrode material was observed. © 1992 John Wiley & Sons, Inc. 相似文献
6.
Hong-Ling Li Koichi Takahashi Yusuke Ujihira Mariko Ishiwatari Kurima Kobayashi Takahiko Iriyama Tokuzo Konishi 《Journal of Thermal Analysis and Calorimetry》1995,45(6):1359-1371
The Mössbauer spectra of Sm2Fe17Nx, prepared by the nitrogenation of Sm2Fe17 powders in an ammonia and hydrogen atmosphere, were observed at elevated temperatures to shed light on the thermal behavior of nitrogen in the compounds Sm2Fe17Nx. It was found that there were large differences in thermal behavior between the starting Sm2Fe17, crystalline Sm2Fe17Nx (x≈1.7) and amorphous Sm2Fe17Nx(x~7). The thermal decomposition behavior of Sm2Fe17N3.2, developed as one of the most promising hard magnetic materials, was found to be different under different atmospheres. 相似文献
7.
K. Takahashi Y. Ujuhira K. Kobayashi T. Iriyama T. Konishi 《Hyperfine Interactions》1992,68(1-4):413-416
Among the ternary rare earth-iron-nitrogen compounds, Sm2Fe17Nx, invented and refined by Asahi Chemical Industry Co., Ltd., shows high magnetic anisotropy, intrinsic coercivity and high
saturation magnetization.
Powders of Sm2Fe17, prepared by are melting method, were nitrided in a mixed gas of hydrogen and ammonia to get x=0≈8 samples /1.2/. These samples
have crystal structure of Th2Zn17 and Fe atoms are estimated to locate in 6c, 9d, 18f, and 18h sites /2.3/.
The Mossbauer spectrum of Sm2Fe17N3. z showed several unique magnetic properties. For example, Q.S. due to Fe occupying 18h site shifted to the direction of minus
velocity.
The result indicates that the nitrogen sites are not only 9e but 3b.
CEM spectra of Sm2Fe17Nx powders showed the doublet due to iron oxide indicating that the surface of Sm2Fe17Nx powders were oxidised /4/. but even if they were exposed to strongly oxidative atmosphere, the thickness of the oxidised
layers increased little, resulting no effect to the magnetic properties and to the Mossbauer magnetic parameters of the bulk. 相似文献
8.
Ohne Zusammenfassung 相似文献
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10.
K Miyazaki Y Kato T Matsui S Hayashi Y Iriyama T Fukutsuka T Abe Z Ogumi 《Physical chemistry chemical physics : PCCP》2012,14(31):11135-11138
A high proton-conducting phase appears in the composites of zirconium- and titanium-oxide nanoparticles and polyphosphoric acid (HPO(3)). Metal oxide nanoparticles (ZrO(2) and TiO(2)) react with HPO(3) and form composite electrolytes containing pyrophosphates (ZrP(2)O(7) or TiP(2)O(7)) and shortened HPO(3) chains. The ZrO(2)-HPO(3) composite exhibits eleven times higher conductivity than sole HPO(3) at the maximum. A formed layer of shortened HPO(3) chains surrounding the pyrophosphates enhances the proton conductivities of the composite electrolytes and reduces the activation energies for the proton conductivities from 50 to 30 kJ mol(-1). 相似文献