Magnetism and superconductivity in La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O

Journal Article · Fri Jun 15 04:00:00 EDT 2001 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1370994· OSTI ID:40204221

Prieto, P; Vivas, P; Campillo, G; Baca, E; Castro, L F; Varela, M; Ballesteros, C; Villegas, J E; Arias, D; Leon, C ^[1]

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1. and others

We report on the magnetic and superconducting properties of La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7} (LCMO/YBCO) superlattices. For a constant LCMO layer thickness of 6 unit cells (u.c.), resistance and susceptibility measurements show superconductivity for YBCO layer thickness in excess of 4 unit cells. The critical temperature increases with YBCO thickness, and a T{sub c} of 58 K is found for a YBCO thickness of 10 unit cells. Magnetization measurements show a ferromagnetic transition at 100 K in a (LCMO{sub 6u.c.}/YBCO{sub 5u.c.}){sub 15bilayer} superlattice, and a depressed value of the saturation magnetization of 20 emucm{minus}3. These results are discussed in terms of interface disorder (analyzed by x-ray diffraction and transmission electron microscopy) and of the possible interaction between magnetism and superconductivity. {copyright} 2001 American Institute of Physics.

• Sponsoring Organization: (US)
• OSTI ID: 40204221
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 89; ISSN 0021-8979
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRITICAL TEMPERATURE
MAGNETISM
MAGNETIZATION
PHYSICS
SATURATION
SUPERCONDUCTIVITY
SUPERLATTICES
THICKNESS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION