Shape memory effect associated with martensitic transformations is a rapidly developing field in nanotechnologies, where industrial use of systems established on that effect provide greater flexibility on the nanodevice fabrications of various kinds. And therefore it addresses questions to the phase transition phenomena at low scale and its limitations and control. In this report we studied the crystal structure of tapered plates of ${\mathrm{Ti}}_2\mathrm{NiCu}$ alloy and the temperature $T_c$ at which the martensitic transition occurs. We demonstrated that $T_c$ has a strongly descending character as a function of the plate thickness $h$. The critical thickness value at which the transition is completely suppressed is 20 nm. Moreover, the obtained results for $T_c\left(h\right)$ curves indicate the hysteretic nature of the transition. These findings open the pathway for size limit indications and regime modulations where the alloy-based nanomechanical devices can be tuned to operate more efficiently.

中文翻译：

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aTi2NiCuwedge中纳米级马氏体转变的阻断

与马氏体转变相关的形状记忆效应是纳米技术中一个快速发展的领域，在纳米技术中，基于该效应建立的系统的工业应用为各种纳米器件制造提供了更大的灵活性。因此，它解决了对小规模相变现象及其局限和控制的问题。在本报告中，我们研究了锥形板的晶体结构。${钛}_2\mathrm{镍铜}$ 合金和温度 ${Ť}_C$马氏体转变发生的地方。我们证明了${Ť}_C$ 具有极强的下降特性，取决于板厚 $H$。完全抑制转变的临界厚度值为20 nm。此外，获得的结果${Ť}_C（H）$曲线表示过渡的滞后性质。这些发现为尺寸极限指示和状态调节开辟了途径，其中基于合金的纳米机械装置可以进行调整以更有效地运行。