Understanding the dynamic magnetization process for the magnetoelectric effect in multiferroic composites
Abstract
Based on a magnetic relaxation model, an approach that includes the spin dynamics is proposed and applied to describe the magnetoelectric (ME) effect frequency dependence for a 0–3 type composite at low temperatures. Our results show that the ME coefficient, in low temperatures, for PMN-PT/CFO ((1−x)Pb(Mg1/3Nb2/3)−xPbTiO3/CoFe2O4) composite has a step-like behavior on the hysteresis loop for frequency of 1 kHz, contrasting with the results at low frequencies (10 Hz). This approach assumes that the ferromagnetic and ferroelectric phases are coupled through the interactions of the spins of the ferromagnetic phase with the composite phonons by spin/lattice relaxation.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 28, 2016
- Source ID
- 10.1063/1.4944889
Entities
People
- A. Bhalla
- A. J. A. De Oliveira
- A. J. Gualdi
- David García
- F. L. Zabotto
- P. C. De Camargo
- R. Guo
Organizations
- National Council for Scientific and Technological Development
- National Science Foundation
- Office of Naval Research
- São Paulo Research Foundation
- Universidade Federal de São Carlos
- University of Texas at San Antonio