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

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4857935· OSTI ID:22273941

Xie, Q. Y. ^[1]; Gao, J. ^[2]; Jia, Q. J. ^[3]

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1. National Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanijng 210093 (China)
2. Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong)
3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 (China)

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.

• OSTI ID: 22273941
• Journal Information: Journal of Applied Physics, Vol. 115, 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); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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