Electronic properties of boron-doped multiwall carbon nanotubes studied by ESR and static magnetization

Likodimos, V; Glenis, S; Lin, CL

dc.contributor.author	Likodimos, V	en
dc.contributor.author	Glenis, S	en
dc.contributor.author	Lin, CL	en
dc.date.accessioned	2014-03-01T01:22:17Z
dc.date.available	2014-03-01T01:22:17Z
dc.date.issued	2005	en
dc.identifier.issn	1098-0121	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16513
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	SPIN-RESONANCE	en
dc.subject.other	FERROMAGNETIC-RESONANCE	en
dc.subject.other	GRAPHITE	en
dc.subject.other	SUSCEPTIBILITY	en
dc.subject.other	DIAMAGNETISM	en
dc.subject.other	ANISOTROPY	en
dc.subject.other	BEHAVIOR	en
dc.title	Electronic properties of boron-doped multiwall carbon nanotubes studied by ESR and static magnetization	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.72.045436	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.72.045436	en
heal.identifier.secondary	045436	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The electronic properties of boron-doped multiwall carbon nanotubes (MWNTs) have been studied using static magnetization and electron spin resonance. A relatively strong ferromagnetic signal has been identified in the dc magnetization response that shows the occurrence of ferromagnetism, coexisting with the orbital and spin magnetism of the conduction electrons. The small diamagnetic susceptibility and the weak temperature variation of the g factor, which is observed in the narrow conduction-electron spin resonance (CESR), indicate a Fermi level shift of ∼0.2eV, according to the quasi-two-dimensional graphite band model. The temperature dependence of the spin susceptibility reveals considerable enhancement compared to undoped MWNTs and the presence of thermally activated behavior, complying with an increased density of states and the formation of localized impurity states close to the Fermi level. Line-shape analysis of the CESR spectra in terms of two separate spin systems implies enhanced doping inhomogeneity. © 2005 The American Physical Society.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.72.045436	en
dc.identifier.isi	ISI:000230890300175	en
dc.identifier.volume	72	en
dc.identifier.issue	4	en