By Topic

Enhanced Magnetic Property of MgB _{2} Wire Using Phenol-Formaldehyde Resin

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

10 Author(s)
Chang Min Lee ; Sch. of Adv. Mater. Sci. & Eng., Sungkyunkwan Univ., Suwon, South Korea ; Soo Min Hwang ; Kisoo Sung ; Seung Muk Lee
more authors

Abstract-We fabricated carbon (C)-doped MgB2 wires using phenol-formaldehyde resin (PF) as a C source to improve their critical current density (Jc) in a magnetic field. In order to induce homogenous C doping, boron (B) powders were mixed with PF via liquid mixing technique and then the PF-treated B and Mg powders were mixed. The wires were fabricated by conventional powder-in-tube (PIT) process, followed by heat treatment through an in-situ reaction route. We observed that C was substituted for the B sites in the PF-doped MgB2 and that the actual C content increased with increasing PF content. The doped MgB2 wires exhibited lower critical transition temperature (Tc ) and self-field Jc, but superior Hc2 value and better Jc(B) performance than the undoped sample. The 3 wt% PF sample had the highest Jc value of 7.77 ?? 103 A/cm , which is significantly higher than that of the undoped sample (0.29 ?? 103 A/cm2) at 5 K and 6.4 T.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:20 ,  Issue: 3 )