Impact responses of rectangular composite plates with embedded shape memory alloy (SMA) wires are investigated in the present research. The plate is assumed to be placed in a thermal environment; so that in contrast to the available researches in the field, the shape memory and ferroelasticity effects have to be considered also in addition to the superelasticity. The governing equations are der...

本文报道了一例具有反XeF4结构的新型杂化晶体(Me3NCH2-CH2OH)4[Ni(NCS)6], 其分子组分的较复杂有序-无序转变使得该化合 物在269和360 K发生两步可逆相变. 这两步相变伴随着P21/n–P4/mnc–Bmab的空间群变化, 即分别属于正常的降温对称性破缺和反常的升温 对称性破缺现象, 因此使得该化合物可在低温和高温均展现出铁弹性 (自发极化强度分别为0.0603和0.0073). 这种不同寻常的高低温双铁弹 性的发现和研究, 有助于加深对反常对称性破缺相变的理解, 并为今后 在分子杂化晶体中探索高温铁性材料提供重要线索.

Spin-transition materials, including the families of spin-crossover and charge-transfer systems, more generally molecular-based materials exhibiting electronic and/or structural bistability, may undergo various types phase transitions. The change state is stabilized by molecular reorganizations both phenomena, which are usually non-symmetry breaking, can be described through evolution an order ...

Two-dimensional (2D) multiferroic materials with controllable magnetism have promising prospects in miniaturized quantum device applications, such as high-density data storage and spintronic devices. Here, using first-principles calculations, we propose a coexistence of antiferromagnetism ferroelasticity $MnF_{4}$ monolayer. The monolayer is found to be an intrinsic wide-gap semiconductor large...