Article
Designing Morphotropic Phase Composition in BiFeO3
Nano Letters
(2019)
Abstract
In classical morphotropic piezoelectric materials, rhombohedral and tetragonal phase variants can energetically compete to form a mixed phase regime with improved functional properties. While the discovery of morphotropic-like phases in multiferroic BiFeO3 films has broadened this definition, accessing these phase spaces is still typically accomplished through isovalent substitution or heteroepitaxial strain which do not allow for continuous modification of phase composition postsynthesis. Here, we show that it is possible to use low-energy helium implantation to tailor morphotropic phases of epitaxial BiFeO3 films postsynthesis in a continuous and iterative manner. Applying this strain doping approach to morphotropic films creates a new phase space based on internal and external lattice stress that can be seen as an analogue to temperature–composition phase diagrams of classical morphotropic ferroelectric systems.
Keywords
- Morphotropic phases strain ferroelectrics
Disciplines
Publication Date
January 23, 2019
DOI
10.1021/acs.nanolett.8b04322
Publisher Statement
SJSU users: Use the following link to login and access the article via SJSU databases.
Citation Information
Andreas Herklotz, Stefania F. Rus, Nina Balke, Christopher Rouleau, et al.. "Designing Morphotropic Phase Composition in BiFeO3" Nano Letters Vol. 19 Iss. 2 (2019) ISSN: 1530-6984 Available at: http://works.bepress.com/santosh-kc/4/