高压电导研究

高压下物质结构和性质会发生很大的改变，电导对于认识压力的作用效应和寻找新的导电材料具有重要意义．高压电导研究所采用的设备主要有金刚石压腔、超高压大腔体装置(大压机)以及高压电导池三种．金刚石压腔可达550GPa压力；超高压大腔体装置压力一般在30GPa以下，可以提供较大体积的样品；高压电导池主要进行流体的电导研究，压力在400MPa以下，有静止和流动两种类型，流动式高压电导池是近年来才发展起来的，其准确方便．文章对目前高压电导的研究进行简单的介绍和分析．

Conductance under high pressure

The structure and characteristics of materials undergo changes under high pressure. The study of high-pressure conductance is very important for understanding the effect of pressure on materials and for discovering novel conducting materials. The diamond anvil cell, ultrahigh pressure large cell, and high pressure electrical conductance cell are frequently used for high-pressure conductance measurement. The first can attain a pressure of 550GPa; the second has a bigger sample volume but a pressure less than 30GPa; the third is mainly used to study fluid conductanceand can only reach 4000 atm. There are also static and flow cells in use, the latter is of recent design and is more accurate and convenient to use. Recent progress in the research of conductance under high pressure is summarized.