Electronic phase diagram of epitaxial La1−xSrxFeO3 films
Abstract
The electronic phase diagram of epitaxial La1−xSrxFeO3 films is presented. The films were grown on SrTiO3 using molecular beam epitaxy with post-growth annealing to minimize oxygen vacancies. Insulating behavior is observed from x = 0–0.9, with metallic conduction only present for x = 1.0. While the La-rich compounds exhibit polaron conduction over all temperatures measured, the Sr-rich films exhibit an electronic phase transition within the compositional window of x = 0.49–0.9 as revealed by temperature-dependent resistivity measurements. The transition temperatures are found to decrease with increasing Sr content. The constructed phase diagram is discussed in the context of other 3d eg perovskite systems including manganites and cobaltites.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 11, 2014
- Source ID
- 10.1063/1.4893139
Entities
People
- A. L. Krick
- E. J. Moon
- M. D. Scafetta
- R. J. Sichel-tissot
- S. J. May
- Y. J. Xie
Organizations
- Army Research Office
- Drexel University
- National Science Foundation
- Office of Naval Research