Correlating Disorder Microstructure and Magnetotransport of Carbon Nanowalls

Mijaela Acosta Gentoiu, Rafael García Gutiérrez, José Joaquín Alvarado Pulido, Javier Montaño Peraza, Marius Volmer, Sorin Vizireanu, Stefan Antohe, Gheorghe Dinescu, Ricardo Alberto Rodriguez-Carvajal*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The carbon nanowalls (CNWs) grown by Plasma-Enhanced CVD reveal differences in the magnetotransport properties depending on the synthesis parameters. In this paper, we report the influence of the deposition temperature, which produces variations of the disorder microstructure of the CNWs. Relative low disorder leads to the weak localization with the transition to weak antilocalization. Higher disorder generates positive Hopping mechanism in low field with a crossover to a diffusion transport by graphene nanocrystallites. The samples reveal a similitude of the isoline density of the MR at a low temperature (<50 K), explained in the context of the magnetization. This effect is independent of the number of defects. We can achieve a desirable amount of control over the MT properties changing the CNWs’ microstructure.

Original languageEnglish
Article number2476
JournalApplied Sciences (Switzerland)
Volume13
Issue number4
DOIs
StatePublished - Feb 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 by the authors.

Keywords

  • disorder
  • graphene
  • magnetotransport
  • nanowalls

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