Published June 13, 2011 | Version v1
Journal article Metadata-only

Biaxially textured cobalt-doped BaFe2As2 films with high critical current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates

Creators

  • 1. Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503 (Japan)
  • 2. Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  • 3. Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13 Shinonome 1-chome, Koto-ku, Tokyo 135-0062 (Japan)
  • 4. Frontier Research Center, Tokyo Institute of Technology, S2-6F East, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503 (Japan)

Description

High critical current densities (Jc)>1 MA/cm2 were realized in cobalt-doped BaFe2As2 (BaFe2As2:Co) films on flexible metal substrates with biaxially textured MgO base-layers fabricated by an ion-beam assisted deposition technique. The BaFe2As2:Co films showed small in-plane crystalline misorientations (ΔφBaFe2As2:Co) of ∼3 deg. regardless of twice larger misorientations of the MgO base-layers (ΔφMgO=7.3 deg.), and exhibited high self-field Jc up to 3.5 MA/cm2 at 2 K. These values are comparable to that on MgO single crystals and the highest Jc among iron pnictide superconducting tapes and wires ever reported. High in-field Jc suggests the existence of c-axis correlated vortex pinning centers.

Additional details

Identifiers

DOI
10.1063/1.3599844;
arXiv
arXiv:1103.5815v2;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
98
Journal Issue
24
Journal Page Range
p. 242510-242510.3
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42109131
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ARSENIC ALLOYS; BARIUM ALLOYS; COBALT ADDITIONS; CRITICAL CURRENT; CURRENT DENSITY; DEPOSITION; DOPED MATERIALS; ION BEAMS; IRON ALLOYS; LAYERS; MAGNESIUM OXIDES; MAGNETIC FLUX; MONOCRYSTALS; SUBSTRATES; SUPERCONDUCTIVITY; THIN FILMS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALLOYS; BEAMS; CHALCOGENIDES; COBALT ALLOYS; CRYSTALS; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; FILMS; MAGNESIUM COMPOUNDS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
(c) 2011 American Institute of Physics