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Fe3O4/β-CD的高压电学性质研究

DOI: 10.11858/gywlxb.2012.06.010, PP. 661-664

Keywords: 高压,Fe3O4/β-CD,电导率

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Abstract:

高压下的电学性质测量是获得材料物理性质的有效手段。利用集成在金刚石对顶砧上的薄膜微电路,测量了高压下Fe3O4/β-CD(β-糊精)的电导率,并分析了电导率随压力的变化关系。在0~39.9GPa范围内,Fe3O4/β-CD的电导率随压力的增加而逐渐增大,并呈半导体的特征;而在17.0GPa处其电导率发生突变,表明样品发生了高压相变。在卸压过程中,电导率随压力的变化呈线性关系,并且卸压后样品的电导率不能回到最初的状态,推测这是一个不可逆的高压结构相变。

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