Effect of SWCNT dilution on the resistivity of MgB2

Danhao Ma, Ruwantha Jayasingha, Dustin Hess, Kofi W. Adu, Gamini U. Sumanasekera

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report an increase in superconducting temperature of magnesium diboride (MgB2) by minute single-wall carbon nanotubes (SWCNT) inclusions. The SWCNTs concentration was varied from 0.1 wt% to 1.0wt%. The temperature dependence resistivity of sintered MgB2- SWCNTs composites containing 0.1 wt%, 0.5wt% and 1.0wt% were measured and compared with that of the pure MgB2. The superconducting critical temperature (Tc) of the MgB2 increased from 40 K to as high as 42.4 K for the MgB 2 containing 0.5wt% of SWCNTs. The room temperature resistivity ratio (RRR) shows dependence on the sample composition. The temperature width (ΔT) decreases with increasing SWCNT content from 0.1 wt% to 1.0wt%. The normal state resistivity data were fitted with the generalized Block-Griineisen function obtaining a Debye temperature of ∼ 900K.

Original languageEnglish (US)
Title of host publicationCarbon Nanomaterials
PublisherMaterials Research Society
Pages199-204
Number of pages6
ISBN (Print)9781632660985
DOIs
StatePublished - Jan 1 2013
Event2012 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 25 2012Nov 30 2012

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1505
ISSN (Print)0272-9172

Other

Other2012 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/25/1211/30/12

Fingerprint

Carbon Nanotubes
Dilution
dilution
Carbon nanotubes
carbon nanotubes
electrical resistivity
Temperature
magnesium
critical temperature
Debye temperature
specific heat
inclusions
temperature dependence
composite materials
temperature
room temperature
Magnesium
Composite materials
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ma, D., Jayasingha, R., Hess, D., Adu, K. W., & Sumanasekera, G. U. (2013). Effect of SWCNT dilution on the resistivity of MgB2. In Carbon Nanomaterials (pp. 199-204). (Materials Research Society Symposium Proceedings; Vol. 1505). Materials Research Society. https://doi.org/10.1557/opl.2013.537
Ma, Danhao ; Jayasingha, Ruwantha ; Hess, Dustin ; Adu, Kofi W. ; Sumanasekera, Gamini U. / Effect of SWCNT dilution on the resistivity of MgB2. Carbon Nanomaterials. Materials Research Society, 2013. pp. 199-204 (Materials Research Society Symposium Proceedings).
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Ma, D, Jayasingha, R, Hess, D, Adu, KW & Sumanasekera, GU 2013, Effect of SWCNT dilution on the resistivity of MgB2. in Carbon Nanomaterials. Materials Research Society Symposium Proceedings, vol. 1505, Materials Research Society, pp. 199-204, 2012 MRS Fall Meeting, Boston, MA, United States, 11/25/12. https://doi.org/10.1557/opl.2013.537

Effect of SWCNT dilution on the resistivity of MgB2. / Ma, Danhao; Jayasingha, Ruwantha; Hess, Dustin; Adu, Kofi W.; Sumanasekera, Gamini U.

Carbon Nanomaterials. Materials Research Society, 2013. p. 199-204 (Materials Research Society Symposium Proceedings; Vol. 1505).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Ma D, Jayasingha R, Hess D, Adu KW, Sumanasekera GU. Effect of SWCNT dilution on the resistivity of MgB2. In Carbon Nanomaterials. Materials Research Society. 2013. p. 199-204. (Materials Research Society Symposium Proceedings). https://doi.org/10.1557/opl.2013.537