Artificial multiferroic structures based on barium-strontium titanate
| Autor: | Viktor V. Plotnikov, Yulia Pavlova, Oleg Pakhomov, Andrey Stashkevich, Alexander A. Semenov, I. L. Mylnikov, Pavel Yu. Belyavskiy, A. I. Dedyk, A. V. Es’kov, Alexey B. Ustinov, Andrey A. Nikitin |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science business.industry Mechanical Engineering Doping Nanotechnology 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology 01 natural sciences Titanate law.invention Capacitor X-ray photoelectron spectroscopy Mechanics of Materials law Electric field 0103 physical sciences Optoelectronics General Materials Science Multiferroics Dielectric loss 0210 nano-technology business |
| Zdroj: | Journal of Materials Science. 51:7803-7813 |
| ISSN: | 1573-4803 0022-2461 |
| Popis: | Artificial extrinsic and intrinsic multiferroic structures were developed in the form of yttrium-iron garnet/barium-strontium titanate bi-layers and manganese-doped barium-strontium titanate films with a relatively high doping rate in the range of 10–20 mol%. For the experimental investigations, the planar capacitors were formed on the surfaces of the structures and the capacitance–voltage characteristics were measured. Structural characterization of the samples under study was based on X-ray diffraction analysis and film–substrate interfaces were investigated by X-ray photoelectron spectroscopy. The relative dielectric permittivity, dielectric loss tangent, and electric field tunability of the samples were measured in a temperature range from 77 to 300 К. The additional 6 and 3 % tuning of the dielectric permittivity by external magnetic field of 2000 Oe was demonstrated for the extrinsic and intrinsic structures, respectively. |
| Databáze: | OpenAIRE |
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