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1.862 Aktuelle Fachpublikationen zum Thema temperature

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Flame Spray Synthesis of BaZr0.8Y0.2O3–δ Electrolyte Nanopowders for Intermediate Temperature Proton Conducting Fuel Cells

29.06.2015 | F. Bozza, Y. Arroyo, T. Graule, Fuel Cells, 2015

Abstract Flame Spray Synthesis (FSS) technique has been used for the preparation of BaZr0.8Y0.2O3–δ (BZY20) nanoprecursors. The nanoprecursors were composed of a perovskite phase mixed with doped Zirconia and barium nitrate. Pure phase powder could be obtained after calcining the precursors at ...

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Crystal structure, thermal expansion and high-temperature electrical conductivity of A-site deficient La2−zCo1+y(MgxNb1−x)1−yO6 double perovskites

28.06.2015 | Author(s): S. Shafeie , B. Dreyer , R.H.P Awater , T. Golod , J. Grins , J.J. Biendicho , S.Ya. Istomin , G. ..., Journal of Solid State Chemistry, 2015

Publication date: September 2015 Source:Journal of Solid State Chemistry, Volume 229 Author(s): S. Shafeie , B. Dreyer , R.H.P Awater , T. Golod , J. Grins , J.J. Biendicho , S.Ya. Istomin , G. Svensson New La-deficient double perovskites with P21/n symmetry, La∼ 1.90(Co2+ 1−x Mg2+ ...

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Structure and ionic conductivity of well-aligned polycrystalline sodium titanogallate grown by reactive diffusion

28.06.2015 | Author(s): Ryo Hasegawa , Momoko Okabe , Toru Asaka , Nobuo Ishizawa , Koichiro Fukuda, Journal of Solid State Chemistry, 2015

Publication date: September 2015 Source:Journal of Solid State Chemistry, Volume 229 Author(s): Ryo Hasegawa , Momoko Okabe , Toru Asaka , Nobuo Ishizawa , Koichiro Fukuda We prepared the b-axis-oriented polycrystalline Na0.85Ti0.51Ga4.37O8 (NTGO) embedded in Ga2O3-doped Na2Ti4O9 ...

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Impact of disorder effect on the percolative conductivity in Nd0.5Ca0.5−xSrxMnO3 (0.10≤x≤0.25)

28.06.2015 | Author(s): Lisha Xu , Jiyu Fan , Yan Zhu , Yangguang Shi , Lei Zhang , Li Pi , Yuheng Zhang , Daning Shi, Chemical Physics Letters, 2015

Publication date: 1 August 2015 Source:Chemical Physics Letters, Volume 634 Author(s): Lisha Xu , Jiyu Fan , Yan Zhu , Yangguang Shi , Lei Zhang , Li Pi , Yuheng Zhang , Daning Shi Exploring the disorder effect on percolative conductivity is vital to clarify the correlation between ...

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Facile preparation of asymmetric Ni/PVC film with controlled structure: Application as a high‐performance EMI shielding material

24.06.2015 | Yang Zhang, Xiaoxia Fang, Bianying Wen, Wenqi Zou, Journal of Applied Polymer Science, 2015

ABSTRACT Controlling the spatial configuration of conductive fillers in thin composites by a facile strategy is critical to widely commercial use these materials for electromagnetic interference (EMI) shielding applications. In this work, a series of free‐standing thin Ni/polyvinyl chloride ...

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Preparation of epoxy composites with CTAB‐modified BN and MWCNTs

24.06.2015 | Ilkay Ozaytekin, Hamza Ercan Turedi, Gulnare Ahmetli, Polymer Composites, 2015

In this study, multi‐walled carbon nanotubes (MWCNTs) and boron nitride (BN) were functionalized with cetyltrimethylammonium bromide (CTAB) at both pH 5.5 and pH 11. These MWCNT‐CTAB and BN‐CTAB particles used to prepare the composites were dispersed in a bisphenol A (DGEBA)‐type epoxy resin ...

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Study on the temperature-dependent coupling among viscosity, conductivity and structural relaxation of ionic liquids

24.06.2015 | Tsuyoshi Yamaguchi; Takuya Yonezawa; Shinobu Koda, Physical Chemistry Chemical Physics, 2015

The frequency-dependent viscosity and conductivity of three imidazolium-based ionic liquids were measured at several temperatures in the MHz region, and the results are compared with the intermediate scattering functions determined with neutron spin echo spectroscopy. The relaxations of both the ...

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Processing, Dynamic mechanical thermal analysis, and dielectric properties of barium titanate/cellulosic polymer nanocomposites

23.06.2015 | Ashraf F. Ali, Mohammad L. Hassan, Azza A. Ward, Emad M. El‐Giar, Polymer Composites, 2015

High dielectric constant (κ) BaTiO3/ethyl cellulose (BT/EC) nanocomposites having BT loadings of up to 13 vol% were fabricated through a simple casting technique. The BT filler powder, synthesized through an ultrasonic‐assisted solid‐state route, was revealed by X‐ray powder diffractometry (XRD) ...

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Direct Observation of a Gate Tunable Band Gap in Electrical Transport in ABC-Trilayer Graphene

23.06.2015 | Tymofiy Khodkov; Ivan Khrapach; Monica Felicia Craciun; Saverio Russo, Nano Letters, 2015

Few layer graphene systems such as Bernal stacked bilayer and rhombohedral (ABC-) stacked trilayer offer the unique possibility to open an electric field tunable energy gap. To date, this energy gap has been experimentally confirmed in optical spectroscopy. Here we report the first direct ...

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Efficient cross‐section preparation method for high‐resolution imaging of hard polymer composites with a scanning electron microscope

22.06.2015 | N. BRODUSCH, M. YOURDKHANI, P. HUBERT, R. GAUVIN, Journal of Microscopy, 2015

Summary Characterization of distribution and arrangement of filler particles in polymer composites is of primary importance to understand and maximize their mechanical, electrical and thermal properties. An innovative procedure that allows reliable and straightforward preparation of ...

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