Self-assembled C-Axis Oriented Δ-Mon Thin Films on Si Substrates by Chemical Solution Deposition: Growth, Transport and Superconducting Properties

Hanlu Zhang,Zhenzhen Hui,Xianwu Tang,Renhuai Wei,Jie Yang,Jianming Dai,Wenhai Song,Hongmei Luo,Xuebin Zhu,Yuping Sun

Journal of Alloys and Compounds（2017）SCI 2区

Chinese Acad Sci | New Mexico State Univ

Cited 13|Views32

Abstract

Molybdenum nitrides Mo-N are considered as the hardest superconducting metal nitrides, which are usually prepared under high pressure and high temperature to obtain high superconducting transition temperature T. Here, polycrystalline I-MoN thin films with self-assembled c-axis orientation are directly deposited onto Si substrates by chemical solution deposition under ambient NH3 annealing atmosphere without high pressure processing. The prepared delta-MoN/Si thin films show T-c higher than 12 K. The normal state resistivity obeys electron-phonon scattering mechanism and can be well fitted by BlochGrilneisen expression. The results will provide an effective route to prepare large-area delta-MoN/Si thin films with high T-c as well as a guidance to investigate the fundamental properties of polycrystalline delta-MoN thin films.(C) 2017 Elsevier B.V. All rights reserved.

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Key words

I-MoN,Thin films,Self-assembled orientation,Chemical solution deposition

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