论文标题
压力诱导的混合态在自旋旋转期间由自旋弹性相互作用引起的旋转跨界化合物的混合状态
Pressure-induced mixed states caused by spin-elastic interactions during first-order spin phase transition in spin crossover compounds
论文作者
论文摘要
最近，对开发自旋转变现象（ST）现象的可能性进行了深入研究，因此，研究在各种刺激下进行ST的行为尤为重要。在这里，研究了在外部刺激下研究霍夫曼样化合物[Fe（FPZ）2M（CN）4]（FPZ）2M（CN）4]中ST中间相的形状和含量。为此，进行了磁和拉曼光谱测量。在压力诱导的自旋跃迁（PIST）中，出现了高旋转和低自旋态的混合物，而在温度诱导的自旋跃迁（TIST）中，发生同质状态。由压力引起的一阶S滞后，但并非突然。而在环境压力下，温度引起的自旋跃迁是滞后且突然的。为了研究这种差异，我们使用一种考虑弹性相互作用的热力学模型讨论，表明磁滞回路的斜率与内部压力的出现有关，这与高自旋和低自旋状态下样品可压缩性的差异有关。
Recently, the possibility of exploiting the phenomenon of spin transition (ST) has been intensively investigated, therefore, it is particularly important to study the behavior of ST under various stimuli. Here, the shape and content of the intermediate phase of ST in Hoffmann-like compounds [Fe(Fpz)2M(CN)4](M = Pt, Pd) under external stimuli are studied. For this purpose, magnetic and Raman spectroscopy measurements were carried out. In pressure-induced spin transition (PIST), a mixture of high-spin and low-spin states appears, while in temperature-induced spin transition (TIST), a homogeneous state occurs. The first-order ST induced by pressure has a hysteresis, but is not abrupt. Whereas, the temperature-induced spin transition at ambient pressure is hysteretic and abrupt. To investigate this difference, we discuss using a thermodynamic model that considers elastic interactions, showing that the slope of the hysteresis loop is related to the appearance of internal pressure, which is related to the difference in sample compressibility under high spin and low spin states.
