Magnetic properties of (CoFe2O4)x:(CeO2)1−x vertically aligned nanocomposites and their pinning properties in YBa2Cu3O7−δ thin films

Abstract

Vertically aligned nanocomposites (VAN) combined ferrimagnetic CoFe2O4 with non-magnetic CeO2 ((CoFe2O4)x:(CeO2)1−x) in different phase ratios (x = 10%, 30% to 50%) have been grown by a pulsed laser deposition technique. Various unique magnetic domain structures form based on the VAN compositions and growth conditions. Anisotropic and tunable ferrimagnetic properties have been demonstrated. These ordered ferrimagnetic nanostructures have been incorporated into YBa2Cu3O7−δ thin films as both cap and buffer layers to enhance the flux pinning properties of the superconducting thin films. The results suggest that the ordered magnetic VAN provides effective pinning centers by both defect and magnetic nanoinclusions.

Document Details

Document Type
Pub Defense Publication
Publication Date
Mar 24, 2014
Source ID
10.1063/1.4869217

Entities

People

  • Chen-fong Tsai
  • Fauzia Khatkhatay
  • Haiyan Wang
  • Jie Jian
  • Jijie Huang
  • Kaiyuan Yu
  • Ming-Jia Li

Organizations

  • Air Force Office of Scientific Research
  • Texas A&M University

Tags

Fields of Study

  • Materials science
  • Physics

Readers

  • Materials Science and Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Superconducting Magnet Technology

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics
  • Microelectronics - Graphene