Electrical Conductivity of One-dimensional Metal Complexes at Low Temperatures and High Pressures

研究了双（1,2-二酮二肟）铂（II）配合物在室温和高压下的绝缘体-金属-半导体转变。为了了解这些转变的机制，我们必须研究这些配合物在低温和高压下的电学性质。制备了一种新的高压装置，用于测量这些配合物在低温(T)和高磁场(H)下的物理参数。本仪器可在压力(P)、T、H、0<P< 3gpa、1.3<T< 300k、0<H< 7tesla范围内使用。对于许多凝聚态物质，可以进行电导率、磁阻、热膨胀系数和磁致伸缩的测量。用同步辐射研究了双（1,2-二酮二恶二）铂（II）配合物的x射线衍射；这些配合物的结构异常是在高压下发现的。这些与高压下有趣的电行为密切相关。

Insulator-to-metal-to-semiconductor transitions of bis (1,2-dionedioximato) platinum (II) complexes have been studied at room temperature and high pressure. In order to understand the mechanism of these transitions we must investigate the electrical properties of these complexes at low temperatures and high pressures. New high pressure apparatus has been prepared to measure the physical parameters of these complexes at low temperatures (T) and at high magnetic fields (H). The apparatus can be used in the range of pressure (P), T and H,0<P<3 GPa, 1.3<T<300 K,and 0<H<7 tesla, respectively. The measurements of the electrical conductivity, magnetoresistance, thermal expansion coefficients and magnetostriction can be carried out for many condensed matters.The X-ray diffraction of bis (1,2-dione dioximato) platinum (II) complexes with synchrotron radiation has been studied ; the structural anomalies in these complexes were found at high pressures. These are closely related to interesting electrical behavior at high pressures.