نتایج جستجو برای: surface alloying

تعداد نتایج: 639565  

1999
J. R. Gao J. P. Heida B. J. van Wees M. Klapwijk

We measure low temperature current transport properties of superconducting Sn contacts to pf-GaAs. For contacts alloyed at 450 C, the current-voltage characteristics show a strong dependence on alloying time. The critical temperature of Sn near the superconductor-semiconductor interface decreases from 3.8 to 1.8 K as the alloying time increases from 0 to 120 s. On the other hand, a long-time al...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :Journal of the Southern African Institute of Mining and Metallurgy 2015

Journal: :Journal of the Surface Finishing Society of Japan 1999

Journal: :Microelectronics Journal 2008
L. C. Sánchez A. M. Calle J. D. Arboleda J. Osorio K. Nomura C. A. Barrero

In this work, iron-doped SnO2 powders were prepared by two methods: mechanical alloying and mechanochemical alloying with successive thermal treatment. The influence of different milling conditions such as ball to powder weight ratio, milling time, rotation velocity of supporting disc and the type of iron starting reactive and their Fe concentration on the structural and magnetic properties of ...

2015
Bi-Cheng Zhou Shun-Li Shang Yi Wang Zi-Kui Liu

Diffusion coefficients of alloying elements in Mg are critical for the development of new Mg alloys for lightweight applications. Here we present the data set of the temperature-dependent dilute tracer diffusion coefficients for 47 substitutional alloying elements in hexagonal closed packed (hcp) Mg calculated from first-principles calculations based on density functional theory (DFT) by combin...

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