The effect of interface oxygen content on magnetoelectric effect of epitaxial La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/BaTiO{sub 3} bilayer

Journal Article · Tue Jan 28 00:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4863459· OSTI ID:22275594

Tingxian, Li ^[1]; Kuoshe, Li ^[2]

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1. College of Physics and Electrical Engineering, Anyang Normal University, Anyang 455002 (China)
2. National Engineering Research Central for Rare Earth Materials, General Research Institute for Nonferrous Metals, The Grirem Advanced materials Co. Ltd., Beijing 100088 (China)

The epitaxial La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/BaTiO{sub 3} (LSMO/BTO) bilayer films are grown on (001) oriented LaAlO{sub 3} substrate by pulsed laser deposition technique. The oxygen-rich interface is obtained through in-situ annealing process in oxygen, and the oxygen-deficient interface is obtained without the annealing process. The results show that the ferromagnetic properties of the LSMO film and the magnetoelectric effect (ME) of the bilayer films strongly correlate to the oxygen content at the interface of LSMO/BTO. The saturated magnetization and the ME voltage coefficient of the oxygen-rich bilayer film are higher than that of oxygen-deficient one. It suggests a more effective ME coupling at the LSMO/BTO interface, which are generated through not only the interface strain but also the spin polarized carriers.

• OSTI ID: 22275594
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 4; 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
ANNEALING
BARIUM COMPOUNDS
COUPLING
ELECTRICAL PROPERTIES
ENERGY BEAM DEPOSITION
EPITAXY
INTERFACES
LANTHANUM COMPOUNDS
LASER RADIATION
LAYERS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
OXYGEN
PULSED IRRADIATION
SPIN ORIENTATION
STRONTIUM COMPOUNDS
THIN FILMS
TITANATES