Heterointerface design and strain tuning in epitaxial BiFeO3:CoFe2O4 nanocomposite films
- Texas A & M Univ., College Station, TX (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
- Univ. of Cambridge (United Kingdom)
The ability to control the morphology of heterointerfaces with coupled functionalities is fascinating from both fundamental and technological perspectives. Here, using BiFeO3:CoFe2O4 vertically aligned nanocomposite (VAN) films as a model system, we demonstrate a simple and effective method to modulate the heterointerface and its morphology in nanocomposite films with pulsed laser deposition. By tuning the deposition frequency through thickness during film growth, both vertically straight and gradient heterointerfaces have been achieved. The modulated heterointerface is strongly correlated with strain tuning and interface coupling, and thus modifies the magnetic anisotropy, coercive fields, and ferroelectric switching behavior. Furthermore, this study provides a viable approach for tailoring the interface strain and coupling in VAN and achieving tunable physical properties.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; European Research Council (ERC)
- Grant/Contract Number:
- 89233218CNA000001; DMR-1401266; DMR-0846504; ERC-2009-AdG 247276 NOVOX
- OSTI ID:
- 1498031
- Report Number(s):
- LA-UR-15-29155
- Journal Information:
- Applied Physics Letters, Vol. 107, Issue 21; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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