Magnetically tailored dielectric behaviour of (1-x)Ba0.98Sm0.02TiO3-xBa0.7Sr0.3Fe12O19 ceramic composites
With the growing need for materials for multifunctional devices, we are studying the behaviour of a composite consisting of titanate ferroelectric phase with strong dielectric properties and ferrites with magnetic properties. Solid-state reaction method was used to prepare Ba1-xSmxTiO3 powders, whil...
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Novi Sad
2024-12-01
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| Series: | Processing and Application of Ceramics |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/1820-6131/2024/1820-61312404348K.pdf |
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| Summary: | With the growing need for materials for multifunctional devices, we are studying the behaviour of a composite consisting of titanate ferroelectric phase with strong dielectric properties and ferrites with magnetic properties. Solid-state reaction method was used to prepare Ba1-xSmxTiO3 powders, while Ba1-xSrxFe12O19 powders were synthesized by sol-gel auto combustion method. The selected titanate and M-type hexaferrite powders were used for fabrication of (1-x)Ba0.98Sm0.02TiO3-xBa0.7Sr0.3Fe12O19 composites (x = 0.1, 0.2, 0.3, 0.4, and 0.5) by their mixing, compaction and sintering at 1240°C. Phase formation was investigated by XRD and multivalent state of Fe (Fe2+ and Fe3+) was identified from XPS. Matching the unique properties of these materials with each other will favour numerous application paths. The magnetic, magneto-dielectric and magnetoelectric properties of perovskite/hexaferrite composites were investigated. Magnetoelectric coupling was found in all of the composite samples by the magneto-dielectric investigation. The maximum magneto-dielectric response of ∼37.7% in terms of change in dielectric permittivity in presence of magnetic field was measured for the sample with x = 0.4 at magnetic field of 1.2 T and frequency of 100Hz. |
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| ISSN: | 1820-6131 2406-1034 |