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2.175 Aktuelle Fachpublikationen zum Thema temperature

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Systematic Study of Exchange Coupling in Core–Shell Fe3−δO4@CoO Nanoparticles

22.05.2015 | Xiaojie Liu; Benoit P. Pichon; Corinne Ulhaq; Christophe Lefèvre; Jean-Marc Grenèche; Dominique Bégin; Sylvie Bégin- ..., Chemistry of Materials, 2015

Although single magnetic domain nanoparticles are very promising for many applications, size reduction usually results in low magnetic anisotropy and unblocked domain at room temperature, e.g., superparamagnetism. An alternative approach is core–shell nanoparticles featured by exchange bias ...


Honeycomb-like Macro-Germanium as High-Capacity Anodes for Lithium-Ion Batteries with Good Cycling and Rate Performance

22.05.2015 | Jianwen Liang; Xiaona Li; Zhiguo Hou; Tianwen Zhang; Yongchun Zhu; Xuedong Yan; Yitai Qian, Chemistry of Materials, 2015

Macro-Ge powder has been synthesized with a novel hydrothermal reduction of commercial GeO2 at 200 °C in an autoclave. The obtained macro-Ge product demonstrates a honeycomb-like macroscopic network structure with a high tap density of 2.19 g cm–3. As for the anode material of lithium ion ...


Highly Active Mesoporous Ferrihydrite Supported Pt Catalyst for Formaldehyde Removal at Room Temperature

21.05.2015 | Zhaoxiong Yan; Zhihua Xu; Jiaguo Yu; Mietek Jaroniec, Environmental Science & Technology, 2015

Ferrihydrite (Fh) supported Pt (Pt/Fh) catalyst was first prepared by combining microemulsion and NaBH4 reduction methods and investigated for room-temperature removal of formaldehyde (HCHO). It was found that the order of addition of Pt precursor and ferrihydrite in the preparation process has ...


Effect of processing conditions on crystallization behavior and mechanical properties of poly(lactic acid) staple fibers

20.05.2015 | Katharina Bruckmoser, Katharina Resch, Journal of Applied Polymer Science, 2015

ABSTRACT Within this study, the applicability of Raman spectroscopy to characterize the crystallinity of PLA staple fibers was evaluated. The influence of the fiber alignment on the possibility to detect crystallinity by using Raman spectroscopy was studied. PLA staple fibers were produced by ...


Concomitant mineralization and detoxification of acid red 88 by an indigenous acclimated mixed culture

19.05.2015 | Madhava Anil Kumar, Vaidyanathan Vinoth Kumar, Ramalingam Ponnusamy, Frederick Paul Daniel, Muthulingam Seenuvasan, ..., Environmental Progress, 2015

An indigenous mixed bacterial culture was screened and acclimated to decolorize a sulfonated azo dye; Acid Red 88 (AR88) under changing growth conditions. The process parameters influencing the average decolorization rate, ADRAR88 (μgmin−1) was optimized using Taguchi's orthogonal array ...


Specific heat and sound velocity at the relevant competing phase of high-temperature superconductors [Physics]

19.05.2015 | Chandra M. Varma; Lijun Zhu, Proceedings of the National Academy of Sciences current issue, 2015

Recent highly accurate sound velocity measurements reveal a phase transition to a competing phase in YBa2Cu3O6+δ that is not identified in available specific heat measurements. We show that this signature is consistent with the universality class of the loop current-ordered state when the ...


The effect of Ba-site substitution on the magnetic behavior of ordered perovskite RBaMn2O6 (R = rare earth)

17.05.2015 | Author(s): Daisuke Akahoshi , Daiki Iijima , Toshiaki Saito, Journal of Solid State Chemistry, 2015

Publication date: August 2015 Source:Journal of Solid State Chemistry, Volume 228 Author(s): Daisuke Akahoshi , Daiki Iijima , Toshiaki Saito We have investigated the effect of Ba-site substitution with Ae (Ae = Sr and Ca) on the magnetic properties of A-site ordered RBaMn2O6 with R = ...


Impact of thermal oxidation pressure and temperature on deactivation of the interfacial trap states in Al2O3/GaAs MOS capacitor

14.05.2015 | Hajin Lim, Seongkyung Kim, Joon Rae Kim, Ji Hun Song, Nae‐In Lee, Jae Kyeong Jeong, Hyeong Joon Kim, physica status solidi (a), 2015

Although GaAs is one of the most attractive channel materials for achieving high electron mobility, reduction of the interface state is still required for high quality MOS devices. In this paper, thermal oxidation under two pressures and various temperatures, and subsequent HF etching were ...


Impact of dopants and silicon structure dimensions on {113}‐defect formation during 2 MeV electron irradiation in an UHVEM

13.05.2015 | J. Vanhellemont, S. Anada, T. Nagase, H. Yasuda, A. Schulze, H. Bender, R. Rooyackers, A. Vandooren, physica status solidi (c), 2015

Abstract When processing Si nanowire based Tunnel Field Effect Transistors (TFETS's), a significant reduction of B diffusion with decreasing nanowire diameter is observed and attributed to reduced transient enhanced diffusion close to the nanowire surface caused by the recombination and ...


Can Dynamics Be Responsible for the Complex Multipeak Infrared Spectra of NO Adsorbed to Copper(II) Sites in Zeolites?

12.05.2015 | Florian Göltl, Philippe Sautet, Ive Hermans, Angewandte Chemie International Edition, 2015

Abstract Copper‐exchanged SSZ‐13 is a very efficient material in the selective catalytic reduction of NOx using ammonia (deNOx‐SCR) and characterizing the underlying distribution of copper sites in the material is of prime importance to understand its activity. The IR spectrum of NO adsorbed ...


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