Issue 6, 2017

Electric field tunable half-metallic characteristic at Fe3O4/BaTiO3 interfaces

Abstract

The interfacial electronic structure of Fe3O4/BaTiO3 heterostructures was investigated using first-principles calculations. Owing to the two TiO-polarization directions, FeBO-terminated models show different interfacial binding strengths. Compared with the OTi–FeBO model, the TiO–FeBO model shows a spin polarization of 100% due to the hybridization effect of Ti 3d and FeB 3d at the Fermi level, which can be modulated by the electric field and TiO polarization directions. Negative electric field can control the strength of the hybridization of the interfacial Ti and O with FeB, but the positive electric field has no significant effect on it. The tunable high spin polarization at Fe3O4/BaTiO3 interfaces has potential applications in spintronic devices.

Graphical abstract: Electric field tunable half-metallic characteristic at Fe3O4/BaTiO3 interfaces

Supplementary files

Article information

Article type
Paper
Submitted
17 Nov 2016
Accepted
06 Jan 2017
First published
06 Jan 2017

Phys. Chem. Chem. Phys., 2017,19, 4330-4336

Electric field tunable half-metallic characteristic at Fe3O4/BaTiO3 interfaces

X. Hou, X. Wang, G. Chen and W. Mi, Phys. Chem. Chem. Phys., 2017, 19, 4330 DOI: 10.1039/C6CP07858C

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