Particle Irradiation Induced Defects in High Temperature Superconductors. (26th February 2019)

• Record Type: Journal Article
• Authors: Niraula, Prashanta Mani; Bokari, Eiman; Iqbal, Shahid; Paulius, Lisa; Smylie, Matthew; Welp, Ulrich; Kwok, Wai-Kwong; Kayani, Asghar
• Is Part Of: MRS advances. Volume 4:Number 2(2019)
• Page Start: 119
• Page End: 124
• Publication Date: 2019-02-26
• Subjects: ion-solid interactions, -- superconducting, -- defects; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2019.143
• Languages: English
• ISSNs: 2059-8521

Abstract

Abstract: We use irradiation with 50-MeV Cu-ions to create vortex pinning defects in high-temperature superconducting Y1 Ba2 Cu3 O7-x coated conductors using a beam-rastering approach that allows for the uniform irradiation of large ample areas. Our samples contain barium zirconate nanorods as pre-existing vortex pinning defects. By irradiating the samples at angles of 0 o, 15 o and 30 o from the crystallographic c-axis we explore the interplay between pre-existing and irradiation-induced pinning and find that irradiation at 30 o leads to a moderate enhancement of Jc at 5 K at high fields (greater than 2 Tesla). In contrast, Jc was suppressed for all temperatures and fields for other angles of irradiation. Optimized particle irradiation procedures offer a way for improving the performance of high-temperature superconducting wires for use in high magnetic fields without the need for changing wire synthesis protocols.