skip to main content

Title: Exchange bias induced by the fully strained La{sub 2/3}Ca{sub 1/3}MnO{sub 3} dead layers

A pure compressively strained La{sub 2/3}Ca{sub 1/3}MnO{sub 3} (LCMO) dead layer grown on (001)-oriented LaAlO{sub 3} substrate can show all the rich phenomenon of large bias field shift, coercive field enhancement, and high blocking temperature. The obtained exchange bias field (∼350 Oe) and the enhanced coercivity of about 1160 Oe at 5 K under 500 Oe cooling field are superior to that have been reported in LCMO-based ferromagnetic/antiferromagnetic superlattices or nanoscale systems. Our results clearly demonstrate that the inhomogeneous magnetic dead layer of LCMO can induce a strong exchange bias effect, which may be exploited as a very simple structure for spin-valve device application.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4]
  1. National Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanijng 210093 (China)
  2. (China)
  3. Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong)
  4. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 (China)
Publication Date:
OSTI Identifier:
22273941
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; 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; ALUMINATES; ANTIFERROMAGNETISM; CALCIUM COMPOUNDS; CHANNELING; COERCIVE FORCE; COOLING; CRYSTAL STRUCTURE; LANTHANUM COMPOUNDS; LAYERS; NANOSTRUCTURES; SPIN; STRAINS; SUBSTRATES; SUPERLATTICES; TEMPERATURE DEPENDENCE; VALVES