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563 Aktuelle Fachpublikationen zum Thema temperature

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Microanalysis of the Ti/Al and Ti/Al/Mo/Au ohmic contacts metallization to AlGaN/GaN heterostructures

03.02.2016 | Wojciech Macherzyński, Andrzej Stafiniak, Bogdan Paszkiewicz, Jacek Gryglewicz, Regina Paszkiewicz, physica status solidi (a), 2016

The article presents the comparative study of two metallization schemes, Ti/Al bilayer and Ti/Al/Mo/Au multilayer to AlGaN/GaN heterostructures. The influence of thermal annealing on the topography and sheet resistance Rsh of the metallization was investigated. At the temperature of annealing ...

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Directed crystallization of glass‐coated microwires

03.02.2016 | V. Larin, L. V. Panina, E.‐A. Patroi, D. Patroi, V. Bashev, N. Kutseva, physica status solidi (a), 2016

In this work, the directed crystallization of glass‐coated magnetic microwires of Co‐rich composition is realized with the aim to develop a novel technique for micro‐magnet fabrication. The onset of the process is caused by local overheating above the primary crystallization temperature while ...

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Temperature dependence of the off‐diagonal magnetoimpedance in sensor configuration utilizing Co‐rich amorphous wires

25.01.2016 | N. A. Yudanov, S. A. Evstigneeva, L. V. Panina, A. T. Morchenko, A. Zhukov, X. H. Peng, physica status solidi (a), 2016

For sensor operation, the temperature stability is of primary importance. In this work, we have investigated the temperature dependence of the magnetoimpedance (MI) in glass‐coated Co‐based amorphous wires which are widely used as MI sensing elements. The magnetic alloy has high Curie and ...

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Al‐, Ga‐, and In‐doped ZnO thin films via aerosol assisted CVD for use as transparent conducting oxides

22.01.2016 | Dominic B. Potter, Davinder S. Bhachu, Michael J. Powell, Jawwad A. Darr, Ivan P. Parkin, Claire J. Carmalt, physica status solidi (a), 2016

Al‐, Ga‐, and In‐doped ZnO thin films were deposited on glass substrates by aerosol assisted chemical vapour deposition (AACVD) at a deposition temperature of 450 °C. The air‐stable compound zinc acetylacetonate [Zn(acac)2] was used as a Zn source, whilst for the dopants of Al, Ga and In, the ...

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Modeling of heat transfer processes in Ni2MnIn magnetic wires

21.01.2016 | Oksana Pavlukhina, Vladimir Sokolovskiy, Vasiliy Buchelnikov, physica status solidi (a), 2016

Abstract In this work, we study a heat transfer in the three‐dimensional magnetic cooling cell involving microwires of NiMnIn Heusler alloy. Thermophysical properties of microwires such as the heat capacity, magnetic part of entropy, and magnetocaloric effect were investigated by means of ...

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Molecular dynamics simulations of thermal transport in isotopically modulated semiconductor nanostructures

21.01.2016 | Rafael Frieling, Soizic Eon, Dietrich Wolf, Hartmut Bracht, physica status solidi (a), 2016

Abstract In this paper, we investigate the effect of isotopic modulation on the thermal conductivity of semiconductor nanostructures. The isotope doping is of particular interest for the application of semiconductors as thermoelectric materials as it leaves the electronic properties ...

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Direct observation of nanometer‐scale gate leakage paths in AlGaN/GaN and InAlN/AlN/GaN HEMT structures

21.01.2016 | Junji Kotani, Atsushi Yamada, Tetsuro Ishiguro, Shuichi Tomabechi, Norikazu Nakamura, physica status solidi (a), 2016

This paper investigates the effects of MOVPE growth parameters on the gate leakage characteristics of InAlN HEMT structures and compares leakage current paths in AlGaN and InAlN HEMT structures on a nanometer scale. The gate leakage characteristics of AlGaN and InAlN HEMT were compared, and the ...

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Crystallization behavior during transparent In2O3‐ZnO film growth

19.01.2016 | Junjun Jia, Shin‐ichi Nakamura, Yuzo Shigesato, physica status solidi (a), 2016

Abstract Structural evolution of transparent conductive In2O3‐ZnO (IZO) films with increasing substrate temperature during sputtering was studied using transmission electron microscopy (TEM) and spectroscopic ellipsometry. Increasing the substrate temperature can induce film crystallization ...

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A facile non‐vacuum‐based Cu2ZnSnSe4 superstrate solar cell with 2.44% device efficiency

11.01.2016 | Yongzheng Zhang, Yuxiu Sun, Hao Wang, Hui Yan, physica status solidi (a), 2016

Cu2ZnSnSe4 (CZTSe) solar cell with a facile superstrate structure of carbon/CZTSe/CdS/ITO was fabricated entirely by non‐vacuum processes. The influence of selenization temperature on the composition of CZTSe layer was briefly investigated. Compared with current superstrate‐type CZTS(e) solar ...

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Growth of cobalt nanoparticles in Co–Al2O3 thin films deposited by RF sputtering

08.01.2016 | Rajan Goyal, S. Lamba, S. Annapoorni, physica status solidi (a), 2016

Cobalt nanoparticles in Co–Al2O3 films have been deposited by rf‐magnetron co‐sputtering of cobalt and alumina on Si substrate. X‐ray diffraction (XRD) patterns were collected at room temperature for the as‐deposited as well as annealed thin films. The appearance of (002) reflection in XRD ...

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