@article{33600, keywords = {Domain walls, Bismuth compounds, Domain structure, Epitaxial films, Strain control, Stress concentration, Thermodynamic stability, Ferroelastic domain stability, Piezoelectric force microscopy (PEM)}, author = {M.P Cruz and Y.H Chu and J.X Zhang and P.L Yang and F Zavaliche and Q He and P Shafer and L.Q Chen and Ramamoorthy Ramesh}, title = {Strain control of domain-wall stability in epitaxial BiFeO3 (110) films}, abstract = {We have studied the stability of domains and domain walls in multiferroic BiFeO3 thin films using a combination of piezoelectric force microscopy and phase-field simulations. We have discovered that a film-substrate misfit strain may result in a drastically different thermodynamic stability of two parallel domain walls with the same orientation. A fundamental understanding of the underlying physics, the stress distribution in a domain structure, leads to a novel approach to control the ferroelastic domain stability in the multiferroic BiFeO3 system. © 2007 The American Physical Society.}, year = {2007}, journal = {Physical Review Letters}, volume = {99}, number = {21}, publisher = {American Physical Society}, issn = {00319007}, doi = {10.1103/PhysRevLett.99.217601}, note = {cited By 87}, language = {eng}, }