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[期刊论文]

Size-controlled spontaneously segregated Ba2YTaO6 nanoparticles in YBa2Cu3O7 nanocomposites obtained by chemical solution deposition

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作者:

Coll, M. (Coll, M..) | Guzman, R. (Guzman, R..) | Garces, P. (Garces, P..) | 展开

收录:

CPCI-S EI Scopus SCIE

摘要:

We present a thorough study of the nucleation and growth processes of the solution-based YBa2Cu3O7-Ba2YTaO6 ( YBCO-BYTO) system, carried out with a view to controlling the characteristics of the BYTO phase to meet the requirements for specific power applications. Scanning transmission electron microscopy and x-ray diffraction have been used to characterize the BYTO nucleation and phase evolution during the YBCO-BYTO conversion. At high BYTO loads ( > 10 mol%), the nanoparticles tend to aggregate, resulting in much less efficiency for generating nanostrained areas in the YBCO matrix, and enhancement of the vortex pinning. Our experiments show that by modifying the nucleation kinetics and thermodynamics of the BYTO, the nucleation mode ( homogeneous versus heterogeneous), the particle size and the particle orientation can be controlled. We demonstrate that YBCO-BYTO nanocomposites with high concentration of nanoparticles can be prepared in such a way as to obtain small and randomly oriented nanoparticles (i.e. high incoherent interface), generating highly strained nanoareas in the YBCO, with enhancement in the vortex pinning. We have also observed that the incoherent interface is not the only parameter controlling the nanostrain. The Cu-O intergrowth characteristics must also be a key factor for controlling the nanostrain in future tuning of YBCO vortex pinning.

关键词:

YBCO nanocomposite nanoparticle size chemical solution deposition pinning

作者机构:

  • [ 1 ] [Coll, M.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 2 ] [Guzman, R.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 3 ] [Garces, P.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 4 ] [Gazquez, J.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 5 ] [Rouco, V.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 6 ] [Palau, A.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 7 ] [Ye, S.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 8 ] [Puig, T.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 9 ] [Obradors, X.]ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
  • [ 10 ] [Garces, P.]Univ Nacl Colombia, Bogota, Colombia
  • [ 11 ] [Castro, H.]Univ Nacl Colombia, Bogota, Colombia
  • [ 12 ] [Ye, S.]Beijing Univ Technol, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 13 ] [Suo, H.]Beijing Univ Technol, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 14 ] [Magen, C.]Univ Zaragoza, Inst Nanociencia Aragon, E-50018 Zaragoza, Spain

通讯作者信息:

  • [Coll, M.]ICMAB CSIC, Inst Ciencia Mat Barcelona, Campus UAB, E-08193 Barcelona, Spain

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来源 :

SUPERCONDUCTOR SCIENCE & TECHNOLOGY

ISSN: 0953-2048

年份: 2014

期: 4

卷: 27

3 . 6 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:202

JCR分区:2

中科院分区:2

被引次数:

WoS核心集被引频次: 44

SCOPUS被引频次: 48

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