The effect of Mo addition on the microstructure and J(c) properties of MgB2 tapes fabricated by PIT method
JOURNAL OF ALLOYS AND COMPOUNDS, vol.457, no.1-2, pp.42-46, 2008 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 457 Issue: 1-2
- Publication Date: 2008
- Doi Number: 10.1016/j.jallcom.2007.03.072
- Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.42-46
- Keywords: MgB2 superconducting system, PIT method, critical current density, J(c), CRITICAL-CURRENT DENSITY, SUPERCONDUCTING PROPERTIES, POWDER, ENHANCEMENT, WIRES
- Anadolu University Affiliated: Yes
Abstract
We investigated the effect of Mo addition to MgB2/Ag tapes fabricated by the ex situ PIT method. The heat treatments were carried out at 600 degrees C for 24 h under At atmosphere. The structural development, microstructures, superconducting properties and critical current density were characterized by means of XRD, SEM, M-T and M-H measurements. XRD and SEM studies indicated that Mo, not reacting with matrix of MgB2, was formed. The T-c of the tapes decreased in all the addition levels. The maximum J(c) value was obtained to be 1.2 x 10(5) A cm(-2) at 10 K for pure MgB2 tape. Decrease of J(c) was observed with increasing the Mo concentration. The J(c)-H characteristics of the tapes were decreased by the addition of Mo. This is considered to be due to the reduced flux-pinning force in the material. (C) 2007 Elsevier B.V. All rights reserved.