High pressure electrical transport behavior in SrF2 nanoplates

• 来源期刊: 中国物理B（英文版）
• 关键词: electrical properties phase transitions transport properties
• 年，卷（期）: 2017,（4）
• 页码范围: 321-324
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/4/046401

摘要

The charge transport behavior of strontium fluoride nanocrystals has been investigated by in situ impedance measurement up to 35 GPa.It was found that the parameters changed discontinuously at each phase transition.The charge carriers in SrF2 nanocrystals include both F-ions and electrons.In the Fm3m phase,pressure makes the electronic transport easier,while makes it more difficult in the Pnma phase.The defects at grain boundaries dominate the electronic transport process.Pressure could make the charge-discharge processes in the Fm3m phase much easier,but make it more difficult in the Pnma phase.