Electrical conduction mechanism in carbon-ceramic composites

Alcañiz Monge, Juan; Gil-Muñoz, Gema; Trautwein, Guido; Reinoso, Santiago

Electrical conduction mechanism in carbon-ceramic composites

dc.contributor.author	Alcañiz Monge, Juan
dc.contributor.author	Gil-Muñoz, Gema
dc.contributor.author	Trautwein, Guido
dc.contributor.author	Reinoso, Santiago
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.date.accessioned	2023-06-29T08:18:59Z
dc.date.issued	2023
dc.date.updated	2023-06-29T07:57:57Z
dc.description.abstract	Carbon-ceramic composites (C/Cer) have been prepared by chemical vapor deposition of coal tar pitch onto clay substrates and characterized by thermogravimetric analyses, powder X-ray diffraction, Raman spectroscopy, and scanning and transmission electron microscopies (SEM and TEM). The study of the dc electrical conductivity, together with the determination of the Hall voltage sign, proves that such C/Cer composites are n-type semiconductors. Our results demonstrate that: 1) the mechanism of electrical conduction of C/Cer semiconductors proceeds through the pathways expected for amorphous solids (ie. variable-range hopping and heat-activated pathways at low and high temperatures, respectively); and 2) their transport properties are strongly dependent on the clay components, as evidenced by microscopy experiments.	en
dc.description.sponsorship	The authors would like to thank the financial support from Ministerio de Ciencia e Innovación (grant No. PID2019-105542RB-I00/AEI/10.13039/501100011033 ), the European Union (FEDER Funds), and Generalitat Valenciana (grant No. PROMETEO CIPROM/2021/70 ).	en
dc.embargo.inicio	2023-06-29
dc.embargo.lift	2025-06-01
dc.embargo.terms	2025-06-01
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/msword	en
dc.identifier.citation	Alcañiz-Monge, J., Gil-Muñoz, G., Trautwein, G., & Reinoso, S. (2023). Electrical conduction mechanism in carbon-ceramic composites. Materials Research Bulletin, 162, 112188. https://doi.org/10.1016/j.materresbull.2023.112188	en
dc.identifier.doi	10.1016/j.materresbull.2023.112188
dc.identifier.issn	0025-5408
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/45678
dc.language.iso	eng	en
dc.publisher	Elsevier	en
dc.relation.ispartof	Materials Research Bulletin, 162 (2023) 112188	en
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105542RB-I00/ES/
dc.relation.publisherversion	https://doi.org/10.1016/j.materresbull.2023.112188
dc.rights	© 2023 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Composite materials	en
dc.subject	Electrical transport	en
dc.subject	Nanostructured materials	en
dc.subject	Transmission electron microscopy	en
dc.title	Electrical conduction mechanism in carbon-ceramic composites	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Publication
relation.isAuthorOfPublication	46bbf241-764d-4c78-9667-4c307cf84092
relation.isAuthorOfPublication.latestForDiscovery	46bbf241-764d-4c78-9667-4c307cf84092