Magnetization and electric transport properties of single-crystal MgB 2 nanowires

Cen-Shawn Wu, Yu Cheng Chang, Weimeng Chen, Chinping Chen, Qingrong Feng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

High quality single-crystal magnesium diboride (MgB 2) nanowires with lengths exceeding 10μm were successfully synthesized by hybrid physical chemical vapor deposition. The magnetization and electrical transport properties of single-crystal MgB 2 nanowires (NWs) were measured. The superconducting transition temperature of the NWs was 37K, as confirmed by magnetization measurements. The disordered behavior of the nanowires was observed by four-terminal currentvoltage characteristic measurements of an individual NW from T=10 to 300K. The temperature-dependent resistivity curves for seven NWs collapsed into a universal curve described by the variable range hopping model, showing intrinsic nonmetallic transport properties. This implies that the granular superconducting defect states are critical to the superconductivity of the individual MgB 2 NWs.

Original languageEnglish
Article number465706
JournalNanotechnology
Volume23
Issue number46
DOIs
Publication statusPublished - 2012 Nov 23

Fingerprint

Transport properties
Nanowires
Magnetization
Single crystals
Physical vapor deposition
Superconductivity
Superconducting transition temperature
Magnesium
Chemical vapor deposition
Defects

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Wu, Cen-Shawn ; Chang, Yu Cheng ; Chen, Weimeng ; Chen, Chinping ; Feng, Qingrong. / Magnetization and electric transport properties of single-crystal MgB 2 nanowires. In: Nanotechnology. 2012 ; Vol. 23, No. 46.
@article{1fbd287630404b7986df404f4bf94716,
title = "Magnetization and electric transport properties of single-crystal MgB 2 nanowires",
abstract = "High quality single-crystal magnesium diboride (MgB 2) nanowires with lengths exceeding 10μm were successfully synthesized by hybrid physical chemical vapor deposition. The magnetization and electrical transport properties of single-crystal MgB 2 nanowires (NWs) were measured. The superconducting transition temperature of the NWs was 37K, as confirmed by magnetization measurements. The disordered behavior of the nanowires was observed by four-terminal currentvoltage characteristic measurements of an individual NW from T=10 to 300K. The temperature-dependent resistivity curves for seven NWs collapsed into a universal curve described by the variable range hopping model, showing intrinsic nonmetallic transport properties. This implies that the granular superconducting defect states are critical to the superconductivity of the individual MgB 2 NWs.",
author = "Cen-Shawn Wu and Chang, {Yu Cheng} and Weimeng Chen and Chinping Chen and Qingrong Feng",
year = "2012",
month = "11",
day = "23",
doi = "10.1088/0957-4484/23/46/465706",
language = "English",
volume = "23",
journal = "Nanotechnology",
issn = "0957-4484",
publisher = "IOP Publishing Ltd.",
number = "46",

}

Magnetization and electric transport properties of single-crystal MgB 2 nanowires. / Wu, Cen-Shawn; Chang, Yu Cheng; Chen, Weimeng; Chen, Chinping; Feng, Qingrong.

In: Nanotechnology, Vol. 23, No. 46, 465706, 23.11.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Magnetization and electric transport properties of single-crystal MgB 2 nanowires

AU - Wu, Cen-Shawn

AU - Chang, Yu Cheng

AU - Chen, Weimeng

AU - Chen, Chinping

AU - Feng, Qingrong

PY - 2012/11/23

Y1 - 2012/11/23

N2 - High quality single-crystal magnesium diboride (MgB 2) nanowires with lengths exceeding 10μm were successfully synthesized by hybrid physical chemical vapor deposition. The magnetization and electrical transport properties of single-crystal MgB 2 nanowires (NWs) were measured. The superconducting transition temperature of the NWs was 37K, as confirmed by magnetization measurements. The disordered behavior of the nanowires was observed by four-terminal currentvoltage characteristic measurements of an individual NW from T=10 to 300K. The temperature-dependent resistivity curves for seven NWs collapsed into a universal curve described by the variable range hopping model, showing intrinsic nonmetallic transport properties. This implies that the granular superconducting defect states are critical to the superconductivity of the individual MgB 2 NWs.

AB - High quality single-crystal magnesium diboride (MgB 2) nanowires with lengths exceeding 10μm were successfully synthesized by hybrid physical chemical vapor deposition. The magnetization and electrical transport properties of single-crystal MgB 2 nanowires (NWs) were measured. The superconducting transition temperature of the NWs was 37K, as confirmed by magnetization measurements. The disordered behavior of the nanowires was observed by four-terminal currentvoltage characteristic measurements of an individual NW from T=10 to 300K. The temperature-dependent resistivity curves for seven NWs collapsed into a universal curve described by the variable range hopping model, showing intrinsic nonmetallic transport properties. This implies that the granular superconducting defect states are critical to the superconductivity of the individual MgB 2 NWs.

UR - http://www.scopus.com/inward/record.url?scp=84867961139&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867961139&partnerID=8YFLogxK

U2 - 10.1088/0957-4484/23/46/465706

DO - 10.1088/0957-4484/23/46/465706

M3 - Article

VL - 23

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 46

M1 - 465706

ER -