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Title: Effect of superconducting spacer layer thickness on magneto-transport and magnetic properties of La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7}/La{sub 0.7}Sr{sub 0.3}MnO{sub 3} heterostructures

We have studied the magneto-transport and magnetic properties of LSMO/YBCO/LSMO trilayers on LaAlO{sub 3} (001) substrate, deposited using pulsed laser deposition technique. From x-ray diffraction measurements, it is confirmed that the grown trilayer films are single phase natured. The temperature dependent resistivity shows a metallic behavior below 350 K. At low temperature from resistivity fitted data, we observe that electron-electron, electron-phonon, and electron-magnon interactions are the main factors for scattering of carriers. The ferromagnetic LSMO layers suppress the critical temperature of YBCO spacer layer. We observe maximum magnetoresistance value ∼49% at 250 K for LSMO(200 nm)/YBCO(50 nm)/LSMO(200 nm) trilayer. Magnetization measurements reveal that at room temperature the YBCO spacer layer is allowing the LSMO layers to interact antiferromagnetically.
Authors:
;  [1] ; ; ; ;  [2] ;  [3] ;  [4]
  1. Department of Physics, National Institute of Technology, Hamirpur, HP 177005 (India)
  2. UGC-DAE-Consortium for Scientific Research, Khandwa Road, Indore, MP 452001 (India)
  3. Centre for Material Science and Engineering, National Institute of Technology, Hamirpur, HP 177005 (India)
  4. (India)
Publication Date:
OSTI Identifier:
22271289
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM OXIDES; COPPER OXIDES; CRITICAL TEMPERATURE; CUPRATES; ENERGY BEAM DEPOSITION; HIGH-TC SUPERCONDUCTORS; LANTHANUM COMPOUNDS; LASER RADIATION; LAYERS; MAGNETIC PROPERTIES; MAGNETIZATION; MAGNETORESISTANCE; MANGANATES; PHONONS; PULSED IRRADIATION; SUBSTRATES; TEMPERATURE DEPENDENCE; THICKNESS; X-RAY DIFFRACTION; YTTRIUM OXIDES