Magnetoelectric coupling at the EuO/BaTiO3 interface
Abstract
Magnetization modulation by ferroelectric polarization switching is reported for the ferromagnetic-ferroelectric EuO/BaTiO3 heterostructure. The value of the magnetization critical exponent β is consistent with the expected Heisenberg-like ferromagnetism of EuO and reported Curie temperature. The critical exponent is seen to decrease with increased magnetic coupling. The results are discussed in the context of data obtained earlier for epitaxial La0.67Sr0.33MnO3/BaTiO3 heterostructures, where magnetization increases and critical exponent β also declines with ferroelectric polarization pointing away from ferromagnetic layer. The observed similarity between two systems illustrates an importance of charge doping in magnetoelectric coupling, which can be modulated by ferroelectric polarization reversal.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 29, 2013
- Source ID
- 10.1063/1.4803492
Entities
People
- A. Gruverman
- C. B. Eom
- C.-w. Bark
- H. Lu
- Jiong Tang
- P. A. Dowben
- Ping Liu
- Sangwoo Ryu
- Simon Cao
Organizations
- Army Research Office
- National Science Foundation
- United States Department of Energy
- University of Nebraska–Lincoln
- University of Wisconsin–Madison
- University of Wyoming