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786 Aktuelle Fachpublikationen zum Thema temperature

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Electrical properties of non-stoichiometric PZT 95/5 ferroelectric ceramics

19.11.2012 | Long Gao, Junxia Wang, Shiyuan Yang, Bin Qian, Journal of Materials Science: Materials in Electronics, 2012

Pb0.99(Zr0.95Ti0.05)0.98Nb0.02O3 (denoted as PZT 95/5) ceramics were prepared according to the nominal composition of Pb0.99+x (Zr0.95Ti0.05)0.98Nb0.02O3+x (−0.01 ≤ x ≤ 0.04). The electrical properties as a function of lead oxide (Pb) stoichiometry were evaluated. X-ray diffraction analysis shows ...

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Bismuth surfactant mediated growth of InAs quantum dots by molecular beam epitaxy

19.11.2012 | Dongsheng Fan, Zhaoquan Zeng, Vitaliy G. Dorogan, Yusuke Hirono, Chen Li, Yuriy I. Mazur, Shui-Qing Yu, Shane R. Joh ..., Journal of Materials Science: Materials in Electronics, 2012

This paper explores the significance of using bismuth as a surfactant during the molecular beam epitaxy growth of InAs quantum dots (QDs). The results show that Bi-mediated growth provides a practical solution towards achieving lower density QDs with high optical quality. The InAs QDs grown using ...

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Dielectric losses and ac conductivity of Si–LiNbO3 heterostructures grown by the RF magnetron sputtering method

19.11.2012 | V. Ievlev, M. Sumets, A. Kostyuchenko, N. Bezryadin, Journal of Materials Science: Materials in Electronics, 2012

Single-axis textured polycrystalline LiNbO3 films were grown on (001) Si substrates by the RF magnetron sputtering method. Dielectric losses that occur in the Si–LiNbO3 heterostructures are caused by the conductivity of the LiNbO3 films. Analysis of temperature and frequency dependence of ac ...

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Low temperature sintering and microwave dielectric properties of Li2ZnSiO4 ceramics with ZB glass

19.11.2012 | Gang Dou, Dongxiang Zhou, Shuping Gong, Mei Guo, Journal of Materials Science: Materials in Electronics, 2012

The influence of zinc borate (ZB) glass on densification, phase composition, microstructure and microwave dielectric properties of Li2ZnSiO4 ceramics has been investigated by using X-ray diffraction, scanning electron microscopy and Advantest network analyzer. Undoped Li2ZnSiO4 ceramics exhibited ...

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Fractal analysis of side channels for breakdown structures in XLPE cable insulation

19.11.2012 | Huan Li, Jianying Li, Weiwei Li, Xuetong Zhao, Guoli Wang, Mohammad A. Alim, Journal of Materials Science: Materials in Electronics, 2012

The role of frequency in the range 20 through 300 Hz on the breakdown voltage and the breakdown path is studied in cross-linked polyethylene (XLPE) cable insulation using embedded needle. A maximum breakdown voltage of 25 kV is found at 240 Hz, and side channels are observed on the flank of the ...

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A study on electrodeposited zinc oxide nanostructures

19.11.2012 | M. R. Khelladi, L. Mentar, A. Beniaiche, L. Makhloufi, A. Azizi, Journal of Materials Science: Materials in Electronics, 2012

Zinc oxide (ZnO) nanostructures prepared by electrochemical deposition method from aqueous zinc nitrate solution at 65 °C onto fluorine doped tin oxide coated glass substrates were investigated. Characterization of ZnO nanostructures was realized using conventional electrochemical techniques, ...

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Investigation on high temperature fracture properties of amorphous silicon dioxide by large-scale atomistic simulations

14.11.2012 | Ningbo Liao, Wei Xue, Hongming Zhou, Miao Zhang, Journal of Materials Science: Materials in Electronics, 2012

Amorphous silicon dioxide exhibits low temperature expansion coefficient and stability of dielectric properties over a wide range of frequencies and temperatures, and plays an important role in integrated circuits and microelectronics. Downscaling of dimensions in there devices means great ...

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Effects of hybrid fillers based on micro- and nano-sized silver particles on the electrical performance of epoxy composites

14.11.2012 | M. Zulkarnain, M. Mariatti, I. A. Azid, Journal of Materials Science: Materials in Electronics, 2012

In the present study, electrically conductive adhesives produced from hybrid fillers based on micro- and nano-sized silver (Ag) was developed. The influence of the hybrid filler composition on the electrical properties of the hybrid system was studied. The electrical conductivity of the epoxy ...

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Effect of heavy mixing lithium with doping of manganese on structural, EPR and dielectric spectroscopic properties of Layered Na2Ti3O7

14.11.2012 | Dharmendra Pal, Shahanshah Haider Abdi, Ghanshyam Tripathi, Virendra Kumar Maurya, Kapil Sachan, Sagir Ahamad Khan, Journal of Materials Science: Materials in Electronics, 2012

Sintered ceramic samples of Na2Ti3O7 with 50 % (1.0 Molar Percentage of Li2CO3 i. e. 50 % Lithium) with different doping molar percentages MnO2 (0.0 < ...

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Characterization of cadmium sulphide thin films prepared by successive ionic layers adsorption and reaction method

13.11.2012 | B. V. Rajendra, Benjamin Fuchs, Kekuda Dhananjaya, Journal of Materials Science: Materials in Electronics, 2012

Cadmium sulfide (CdS) thin films were deposited on glass substrate at room temperature by successive ionic layer adsorption and reaction method (SILAR). The deposition parameters such as rinsing time, rinsing cycle and concentration of precursor solution were varied during the preparation of the ...

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