Low-Temperature Electron Transport Property of Carbon Nanotubes Bulk Preparated by Spark Plasma Sintering

Compact carbon nanotubes bulk was prepared by spark plasma sintering technique. The morphology and phase composition of the bulk were analyzed by SEM, TEM, XRD and Raman pattern res pect ively. And the low-temperature electron transport property along the direction of perpendicular to impressed pressure was also investigated. The results show that the microstructure of carbon nanotubes was not damaged during sintering process and retained the instinctive character. The carbon nanotubes bulk exhibited metal-to-insulator Peierls phase transition at around 202 K.