000060922 001__ 60922
000060922 005__ 20170406121707.0
000060922 0247_ $$2doi$$a10.1103/PhysRevB.77.125418
000060922 0248_ $$2sideral$$a79807
000060922 037__ $$aART-2008-79807
000060922 041__ $$aeng
000060922 100__ $$aCaillier, C.
000060922 245__ $$aProbing high pressure properties of single wall carbon nanotubes through fullerene encapsulation
000060922 260__ $$c2008
000060922 5060_ $$aAccess copy available to the general public$$fUnrestricted
000060922 5203_ $$aThe high pressure behavior of bundled 1.35±0.1nm diameter single wall carbon nanotubes (SWNT) filled with C70 fullerenes (usually called peapods) has been investigated by Raman spectroscopy and compared with the corresponding behavior of the nonfilled SWNT. We show experimentally that two reversible pressure-induced transitions take place in the compressed bundle SWNT. The first transition, in the 2–2.5GPa range, is in good correspondence with predictions of the thermodynamic instability of the nanotube circular cross section for the studied tube diameter. An interaction between the fullerenes and the tube walls is then observed at about 3.5GPa, which evidences a progressive deformation of the tube cross section. The second transition takes place at pressures between 10 and 30GPa, and is evidenced by two effects by a strong frequency downshift of the Raman transverse modes and the concomitant disappearance of the fullerenes Raman modes in peapods. The pressure at which the second transition takes place is strongly dependent on the nature of the pressure transmitting medium. We also report irreversible effects at high pressure as the shortening of the tubes, the formation of nanostructures and the disappearance of the C70 Raman signal in some cases. Transmission electron microscopy studies are also reported supporting these transformations.
000060922 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000060922 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000060922 700__ $$aMachon, D.
000060922 700__ $$aSan Miguel, A.
000060922 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, R.
000060922 700__ $$aMontagnac, G.
000060922 700__ $$aCardon, H.
000060922 700__ $$aKalbac, M.
000060922 700__ $$aZukalova, M.
000060922 700__ $$aKavan, L.
000060922 773__ $$g77 (2008), 125418 [9 pp.]$$pPhys. rev., B Condens. matter$$tPhysical review. B, Condensed matter$$x0163-1829
000060922 8564_ $$s922022$$uhttps://zaguan.unizar.es/record/60922/files/texto_completo.pdf$$yVersión publicada
000060922 8564_ $$s119155$$uhttps://zaguan.unizar.es/record/60922/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000060922 909CO $$ooai:zaguan.unizar.es:60922$$particulos$$pdriver
000060922 951__ $$a2017-04-05-14:46:12
000060922 980__ $$aARTICLE