Abstract
A BaTiO3/CoFe2O4heterostructure was fabricated by laser molecular beam epitaxy. The effects of strain on the microstructures, domain morphologies and ferroelectric properties of BaTiO3thin films were studied systematically. Ferroelectric properties in a 40-nm-thick BaTiO3film were suppressed owing to a reduced tetragonality induced by the strain between BaTiO3and the underlying CoFe2O4. For a 100-nm-thick film, BaTiO3exhibits improved the ferroelectric properties with an out-of-plane polarization (2Pr) of 36.4 μC cm-2and an electric coercivity field of 104 kV cm-1. The results show that the thickness of BaTiO3can significantly affect the interfacial strain and hence the ferroelectric properties of the BaTiO3/CoFe2O4heterostructure.
Original language | English |
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Pages (from-to) | 1118-1120 |
Number of pages | 3 |
Journal | Scripta Materialia |
Volume | 58 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Jun 2008 |
Keywords
- Ferroelectric properties
- Ferromagnetic films
- Heteroepitaxy
- Strain
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics