Structure and multiferroic properties of BiFeO3 powders
Source abstract
Abstract
Abstract Bismuth ferrite powders were synthesized by a simple sol–gel method at the temperature as low as 450 °C. Single phase BiFeO3 powders with a rhombohedral perovskite structure were fabricated after Bi–Fe gels were calcined at 450–650 °C. Atomic ratio of Bi to Fe is approximately 1:1 for BiFeO3 powders, as determined by energy dispersive X-ray spectrometer. BiFeO3 powders show weak ferromagnetism at room temperature and strong size-dependent magnetic properties, which is different from the linear M–H relationship in BiFeO3 ceramics. Dielectric anomaly at round 330 °C near the magnetic transition point corresponds to the antiferromagnetic to paramagnetic phase transition, indicating the coupling between polarization and magnetization in BiFeO3 powders. A reversible ferroelectric phase transformation of BiFeO3 powders has been detected at 827 °C by a differential thermal analysis.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
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1. The atomic structure of BiFeO310.1016/0038-1098(69)90597-3 ↗
2. New ferroelectrics of complex composition
3. Antiferromagnetic properties of some perovskites
4. Ferroelectric BiFeO3 X-ray and neutron diffraction study10.1016/S0022-3697(71)80189-0 ↗
5. Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite10.1103/PhysRevB.71.060401 ↗
6. Spiral magnetic ordering in bismuth ferrite10.1088/0022-3719/15/23/020 ↗
7. Size-dependent magnetic properties of single-crystalline multiferroic BiFeO3 powders10.1021/nl063039w ↗
8. Ferromagnetism in nanoscale BiFeO310.1063/1.2768201 ↗
9. Synthesis and thermodynamic stability of multiferroic BiFeO310.1016/j.matlet.2008.05.051 ↗
10. Kinetics of solid-state reaction of Bi2O3 and Fe2O310.1111/j.1151-2916.1971.tb12162.x ↗
11. Sol–gel synthesis and properties of multiferroic BiFeO310.1016/j.matlet.2005.07.050 ↗
12. Dielectric properties and Ac conductivities of dense single-phased BiFeO3 ceramics10.1063/1.2798256 ↗
13. Surfactant-assisted hydrothermal preparation of submicrometer-sized two-dimensional BiFeO3 plates and their photocatalytic activity10.1007/s10853-006-1401-0 ↗
14. Structural, microstructural and magnetic investigations in high-energy ball milled BiFeO3 and Bi0.95Eu0.05FeO3 powders10.1016/j.jallcom.2007.07.069 ↗
15. Characterization of BiFeO3 nanopowder obtained by mechanochemical synthesis10.1016/j.jeurceramsoc.2007.02.163 ↗
16. Effects of chemical modification on the electrical properties of 0.67BiFeO3–0.33PbTiO3 ferroelectric ceramics10.1016/j.ceramint.2003.12.072 ↗
17. Preparation and charaterization of the maneto-electric xBiFeO3–(1−x)BaTiO3 ceramics10.1016/j.jeurceramsoc.2006.02.023 ↗
18. Study of piezoelectric, magnetic and magnetoelectric measurements on SrBi3Nb2FeO1210.1016/j.ceramint.2003.12.074 ↗
19. Low-temperature synthesis of BiFeO3 nanopowders via a sol–gel method10.1016/j.jallcom.2008.04.090 ↗
20. Magnetic structures in substituted ferrites10.1088/0953-8984/2/5/014 ↗
21. Larger polarization and weak ferromagnetism in quenched BiFeO3 ceramics with a distorted rhombohedral crystal structure10.1063/1.2147719 ↗
22. Magnetic and electrical properties of single-phase multiferroic BiFeO310.1063/1.1881775 ↗
23. Phase transitions in BiFeO3
24. Hydrothermal synthesis of perovskite bismuth ferrite crystallites10.1016/j.jcrysgro.2006.02.048 ↗