Multiferroic heterostructure BaTiO3/ε-Fe2O3 composite obtained by in situ reaction
Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial BaTiO3 and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300°C...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Institute for the Science of Sintering, Beograd
2021-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2021/0350-820X2101001F.pdf |
| Summary: | Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a
multiferroic heterostructure composite. Commercial BaTiO3 and Fe(NO3)3•9H2O
were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared
mixture was thermally processed at 300°C for 6 h. Sintering at 1300°C for
1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19 and
Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense
microstructure with a small volume fraction of closed porosity was indicated
by the scanning electron microscopy, while a homogeneous distribution of Fe
ions over BaTiO3 phase was visible from energy dispersive spectroscopy
mapping. Doping of BaTiO3 with Fe2O3 resulted in formation of magnetic
hexaferrite phases, as confirmed by dielectric measurements that showed a
broadened maximum of the permittivity measured as a function of temperature. |
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| ISSN: | 0350-820X 1820-7413 |