Orientation-Dependent Optical Magnetoelectric Effect in Patterned BaTiO3/La0.67Sr0.33MnO3 Heterostructures
| Autor: | Bingcheng Luo, Lixia Ren, Hong Yan, Kexin Jin, Shujin Guo, Yun-Jie Zhang, Huanyu Pei, Changle Chen |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Ferromagnetic material properties business.industry Superlattice Magnetoelectric effect Physics::Optics Bragg's law 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Condensed Matter::Materials Science Light intensity 0103 physical sciences Optoelectronics General Materials Science Multiferroics Thin film 0210 nano-technology business |
| Zdroj: | ACS Applied Materials & Interfaces. 10:30895-30900 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b10566 |
| Popis: | The optical magnetoelectric effect has been widely investigated, but obtaining the large and tunable optical magnetoelectric effect at room temperature is still a big challenge. We here design ferroelectric/ferromagnetic heterostructures with various orientations, which are composed of titanate BaTiO3 and manganese oxide La0.67Sr0.33MnO3. This artificial bilayer structure presents room-temperature ferroelectric and ferromagnetic properties. After patterning a 4 μm grating structure on the bilayer thin film, the optical magnetoelectric effect for near-infrared light is investigated systematically through the Bragg diffraction method. The relative change of diffracted light intensity of the order n = 1 has a strong dependence on the magnetization and polarization of the thin films, whether the superlattice is irradiated in reflection or transmission geometries. For (100)- and (111)-oriented samples, both show the room-temperature optical magnetoelectric effect, while the (111)-oriented thin film has a stronger optical magnetoelectric effect. These results pave the way for designing next-generation optical magnetoelectric devices based on the ferroelectric/ferromagnetic structure. |
| Databáze: | OpenAIRE |
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