Multiferroic orders in 0.5BiFeO3–0.5Bi0·5K0·5TiO3
| Autor: | Yongxing Wei, Changqing Jin, Zengyun Jian, Chenxing Bai, Dong Gao, Yiming Zeng, Gang Xu, Weitong Zhu |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Process Chemistry and Technology 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials Spin magnetic moment Tetragonal crystal system Paramagnetism Lattice constant 0103 physical sciences Materials Chemistry Ceramics and Composites Antiferromagnetism 0210 nano-technology Burns temperature |
| Zdroj: | Ceramics International. 45:15725-15729 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.04.249 |
| Popis: | We report our studies on the multiferroic orders in 0.5BiFeO3–0.5Bi0·5K0·5TiO3 (0.5BF–0.5BT) in this paper. The XRD pattern in the powdered form suggests a pseudocubic phase on average, with a lattice parameter of ∼3.9572 A. However, the bulk sample shows a coexistence of pseudocubic and tetragonal phases. The dielectric anomaly is relaxor-like, with the Burns temperature (TB) of ∼760 K. The remnant polarization (Pr, 4.02–4.25 μC/cm2) is nearly unchanged in the temperature range of 298 K and 398 K. In addition, the normalized strain coefficient (d × 33) increases on heating, from 100 pm/V at 298 K up to 240 pm/V at 453 K. On the other side, two anomalies were confirmed in the temperature dependence of the magnetic susceptibilities. The high-temperature anomaly is related to a transition between the antiferromagnetic and paramagnetic states around ∼143 K. The low-temperature anomaly around ∼5.5 K might hint the onset of the magnetic spin glass state. We believe that some common features should be present in (BixA1-x) (Fe0·5B0.5)O3 (A cations are not ferroelectric active while B cations are not magnetic active). |
| Databáze: | OpenAIRE |
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