Metastable Nitride Synthesis by Pulsed Laser Deposition: A New Phase in the NbN_x System

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• 作者：Treece ; Randolph E. ; Horwitz ; James S. ; Qadri ; Syed B. ; Skelton ; Earl F. ; Donovan ; Edward P. ; et. al.
• 刊名：Journal of Solid State Chemistry
• 出版年：1995
• 出版时间：July, 1995
• 年：1995
• 卷：117
• 期：2
• 页码：294-299
• 全文大小：395 K

文摘

Pulsed laser deposition (PLD) has been used to grow a series of NbN_x (0 < x < 1.2) thin-film materials, including a new superconducting phase. The structural and electrical properties of the NbN_x films were characterized. Structural analysis of the new NbN phase indicates that it is stabilized by heteroepitaxial growth on (100) MgO and is shown to be a primitive cubic distortion from the typical B1, or rock-salt structure. In addition, the NbN phase has a higher superconducting critical temperature and a larger lattice parameter when compared with films of B1-NbN. Growth of this new phase demonstrates that the nonequilibrium synthesis properties of PLD can be used to deposit new, metastable materials.