Low-temperature phase transformation from nanotube to sp<sup>3</sup> superhard carbon phase<xref ref-type="fn" rid="cpb142749fn1">*</xref>

Low-temperature phase transformation from nanotube to sp³ superhard carbon phase*

Xu Ning^a)†, Li Jian-Fu^b), Huang Bo-Long^b), Wang Bao-Lin^a)‡

Volume compressions as a function of pressure (unit: GPa) for different new carbon phases compared with c -BN and diamond.