Effect of SWCNT dilution on the resistivity of MgB2

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

doi:10.1557/opl.2013.537

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 proceeding › Conference 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 (T_c) 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 language	English (US)
Title of host publication	Carbon Nanomaterials
Publisher	Materials Research Society
Pages	199-204
Number of pages	6
ISBN (Print)	9781632660985
DOIs	https://doi.org/10.1557/opl.2013.537
State	Published - 2013
Event	2012 MRS Fall Meeting - Boston, MA, United States Duration: Nov 25 2012 → Nov 30 2012

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1505
ISSN (Print)	0272-9172

Other

Other	2012 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	11/25/12 → 11/30/12

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/opl.2013.537

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@inproceedings{4a672556050641828d79b9b1496695d9,

title = "Effect of SWCNT dilution on the resistivity of MgB2",

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.",

author = "Danhao Ma and Ruwantha Jayasingha and Dustin Hess and Adu, {Kofi W.} and Sumanasekera, {Gamini U.}",

year = "2013",

doi = "10.1557/opl.2013.537",

language = "English (US)",

isbn = "9781632660985",

series = "Materials Research Society Symposium Proceedings",

publisher = "Materials Research Society",

pages = "199--204",

booktitle = "Carbon Nanomaterials",

address = "United States",

note = "2012 MRS Fall Meeting ; Conference date: 25-11-2012 Through 30-11-2012",

}

TY - GEN

T1 - Effect of SWCNT dilution on the resistivity of MgB2

AU - Ma, Danhao

AU - Jayasingha, Ruwantha

AU - Hess, Dustin

AU - Adu, Kofi W.

AU - Sumanasekera, Gamini U.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84899823989&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899823989&partnerID=8YFLogxK

U2 - 10.1557/opl.2013.537

DO - 10.1557/opl.2013.537

M3 - Conference contribution

AN - SCOPUS:84899823989

SN - 9781632660985

T3 - Materials Research Society Symposium Proceedings

SP - 199

EP - 204

BT - Carbon Nanomaterials

PB - Materials Research Society

T2 - 2012 MRS Fall Meeting

Y2 - 25 November 2012 through 30 November 2012

ER -

Effect of SWCNT dilution on the resistivity of MgB2

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