Giant negative thermal expansion in antiperovskite manganese nitrides
Giant negative thermal expansion in antiperovskite manganese nitrides
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DOI：
10.1063/1.3540604
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发表时间：
2011-04-01
影响因子：
3.2
通讯作者：
Takenaka, K.
中科院分区：
文献类型：
--
作者：
Hamada, T.;Takenaka, K.
通过同时用C和B取代N以及Sn取代Zn，可以在Mn_3 Zn_N基反钙钛矿锰氮化物中实现室温下超过α = -30 × 10（-6）K ~（-1）（α：线性热膨胀系数）的巨负热膨胀（NTE）。开发的NTE氮化物显示出更大的负α，尽管工作温度窗口的宽度与迄今为止开发的Mn 3CuN基材料的宽度相当。这种大的、各向同性的和高刚度的NTE材料可以补偿例如甚至铝或塑料材料的大的正热膨胀。(C)2011年美国物理学会。[doi：10.1063/1.3540604]
Giant negative thermal expansion (NTE), over alpha = -30 x 10(-6) K-1 (alpha: coefficient of linear thermal expansion), at room temperature can be achieved in Mn3ZnN-based antiperovskite manganese nitrides by simultaneous substitution of C and B for N as well as Sn for Zn. The developed NTE nitrides show larger negative alpha, although the width of the operating-temperature window is comparable to that of Mn3CuN-based materials developed to date. Such a large, isotropic, and high-stiffness NTE material can compensate for the large positive thermal expansion of, for example, even aluminum or plastic materials. (C) 2011 American Institute of Physics. [doi:10.1063/1.3540604]