Author/Authors :
Hsu، نويسنده , , Kelvin W.K. and Chu، نويسنده , , S.Y and Muٌoz-Picone، نويسنده , , E and Boldْ، نويسنده , , J.L and Firth، نويسنده , , S and Franchi، نويسنده , , P and Roberts، نويسنده , , B.P and Schilder، نويسنده , , A and Terrones، نويسنده , , H and Grobert، نويسنده , , N and Zhu، نويسنده , , Y.Q and Terrones، نويسنده , , M and McHenry، نويسنده , , M.E and Kroto، نويسنده , , H.W and Walton، نويسنده , , D.R.M، نويسنده ,
Abstract :
Paramagnetism in boron-containing carbon nanotubes was detected by SQUID measurements, and a g-value of 2.0020, corresponding to the free carrier spin, was observed over a wide temperature range (108–455 K). This value implies intrinsic metallic behaviour and contrasts with thermally activated semiconduction which multi-walled carbon nanotubes usually exhibit.
