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Title: Effect of High-Gradient Magnetic Field on Electrical Property of Carbon Nanotube-Polypyrrole Composite; Nanotube Separation Mechanism

Abstract

High- and low-gradient magnetic fields are produced by resistor-inductor-capacitor (RLC) discharge apparatuses. The maximum magnetic field is 12.5 Tesla with 1-ms pulse duration. Multiwall carbon nanotube–polypyrrole composite is prepared. The samples are exposed to high- and low-gradient magnetic fields. To understand the behavior of carbon nanotubes (CNTs) in high-gradient magnetic fields (HGMFs), we theoretically calculated the equivalent magnetic susceptibility of a CNT in the gradient magnetic field. We found that the gradient force which is exerted on a CNT could be repellent or absorbent depending on the parallel and perpendicular susceptibilities of the CNT, as well as on the initial orientation of the CNT with respect to magnetic field direction. Four-probe studies show that the electrical conductivity of CNT composites decreases after exposure to a high-gradient magnetic field. Microscopic observation of the electrical current profile of composites reveals rearrangement of CNTs under HGMF.

Authors:
 [1];  [2];  [3];  [4]
  1. Islamic Azad University, Bonab Branch, Department of Electrical and Computer Engineering (Iran, Islamic Republic of)
  2. Islamic Azad University, Bonab Branch, Young Researchers and Elite Club (Iran, Islamic Republic of)
  3. Islamic Azad University, Science and Research Branch (Iran, Islamic Republic of)
  4. University of Tabriz, Department of Chemistry (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22774104
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 2; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CAPACITORS; CARBON NANOTUBES; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; MAGNETIC FIELDS; MAGNETIC SUSCEPTIBILITY; ORGANIC POLYMERS; PULSES; PYRROLES; RESISTORS; SOLENOIDS

Citation Formats

Kazemikia, Kaveh, Bonabi, Fahimeh, Asadpoorchallo, Ali, and Shokrzadeh, Majid. Effect of High-Gradient Magnetic Field on Electrical Property of Carbon Nanotube-Polypyrrole Composite; Nanotube Separation Mechanism. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4243-X.
Kazemikia, Kaveh, Bonabi, Fahimeh, Asadpoorchallo, Ali, & Shokrzadeh, Majid. Effect of High-Gradient Magnetic Field on Electrical Property of Carbon Nanotube-Polypyrrole Composite; Nanotube Separation Mechanism. United States. doi:10.1007/S10948-017-4243-X.
Kazemikia, Kaveh, Bonabi, Fahimeh, Asadpoorchallo, Ali, and Shokrzadeh, Majid. Thu . "Effect of High-Gradient Magnetic Field on Electrical Property of Carbon Nanotube-Polypyrrole Composite; Nanotube Separation Mechanism". United States. doi:10.1007/S10948-017-4243-X.
@article{osti_22774104,
title = {Effect of High-Gradient Magnetic Field on Electrical Property of Carbon Nanotube-Polypyrrole Composite; Nanotube Separation Mechanism},
author = {Kazemikia, Kaveh and Bonabi, Fahimeh and Asadpoorchallo, Ali and Shokrzadeh, Majid},
abstractNote = {High- and low-gradient magnetic fields are produced by resistor-inductor-capacitor (RLC) discharge apparatuses. The maximum magnetic field is 12.5 Tesla with 1-ms pulse duration. Multiwall carbon nanotube–polypyrrole composite is prepared. The samples are exposed to high- and low-gradient magnetic fields. To understand the behavior of carbon nanotubes (CNTs) in high-gradient magnetic fields (HGMFs), we theoretically calculated the equivalent magnetic susceptibility of a CNT in the gradient magnetic field. We found that the gradient force which is exerted on a CNT could be repellent or absorbent depending on the parallel and perpendicular susceptibilities of the CNT, as well as on the initial orientation of the CNT with respect to magnetic field direction. Four-probe studies show that the electrical conductivity of CNT composites decreases after exposure to a high-gradient magnetic field. Microscopic observation of the electrical current profile of composites reveals rearrangement of CNTs under HGMF.},
doi = {10.1007/S10948-017-4243-X},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 2,
volume = 31,
place = {United States},
year = {2018},
month = {2}
}