Grain boundary effect on the β -boron electrical transport properties at high pressure

Ming Li, Jie Yang, Karim Snoussi, Lixin Li, Huixin Wang, Chunxiao Gao

Research output: Contribution to journalArticle

Abstract

Using a diamond anvil cell, the variable-frequency alternate current impedance spectrum of β -boron has been measured upon increasing the pressure from 3.2 to 27.5 GPa. The analysis has established that both the bulk resistance and the grain boundary resistance of β -boron smoothly decrease with the pressure, and that a remarkable phenomenon of discontinuity occurs at 23.9 GPa; this critical value has been interpreted as the pressure threshold above which the van der Waals forces and the interactions between the β -boron grain boundaries significantly emerge. Thence, the grain boundary contribution to the total resistance dramatically declines and results in an enhanced conduction. Besides, the β -boron sample impedance imaginary part exhibits a typical iron-core inductor frequency characteristic.

Original languageEnglish (US)
Article number174101
JournalApplied Physics Letters
Volume97
Issue number17
DOIs
StatePublished - Oct 25 2010
Externally publishedYes

Fingerprint

boron
grain boundaries
transport properties
impedance
Van der Waals forces
inductors
anvils
discontinuity
diamonds
iron
conduction
thresholds
cells
interactions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Grain boundary effect on the β -boron electrical transport properties at high pressure. / Li, Ming; Yang, Jie; Snoussi, Karim; Li, Lixin; Wang, Huixin; Gao, Chunxiao.

In: Applied Physics Letters, Vol. 97, No. 17, 174101, 25.10.2010.

Research output: Contribution to journalArticle

Li, Ming ; Yang, Jie ; Snoussi, Karim ; Li, Lixin ; Wang, Huixin ; Gao, Chunxiao. / Grain boundary effect on the β -boron electrical transport properties at high pressure. In: Applied Physics Letters. 2010 ; Vol. 97, No. 17.
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