Modified optical and magnetic properties at room-temperature across lead-free morphotropic phase boundary in (1-x)BiTi 3/8 Fe 2/8 Mg 3/8 O 3 –xCaTiO 3
Source abstract
Abstract
Abstract Perovskite compounds of the formula (1- x )BiTi 3/8 Fe 2/8 Mg 3/8 O 3 – x CaTiO 3 ((1- x )BMFT- x CTO), a class of highly potential ferroelectric photovoltaic materials with a morphotropic phase boundary (MPB), have been synthesized by solid-state reaction and exhibit simultaneously visible-light response and ferromagnetic order at room-temperature (RT). The effects of structural phases and lattice distortions on electron transitions and orbital orderings are systematically investigated. The crystal lattice displays constriction with increasing x and Raman peaks show non-liner shift due to Bi 3+ and Fe 3+ /Mg 2+ replaced by Ca 2+ and Ti 4+ randomly, respectively. Microstructural characterizations illustrate the rhombohedral-orthorhombic MPB occurrence during the crystal growth. Optical spectroscopy analysis shows band-gaps of our samples are about 2.2 eV with anomalies at the point of phase transition. Furthermore, the (1- x )BMFT- x CTO displays RT ferromagnetism when x F center theory. These results reveal rich physical phenomena and open an avenue to design promising perovskites for solar-energy conversion devices and multiferroic applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Seismic Waves and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. Magnetic control of ferroelectric polarization10.1038/nature02018 ↗
2. Epitaxial BiFeO3 multiferroic thin film heterostructures10.1126/science.1080615 ↗
3. The renaissance of magnetoelectric multiferroics10.1126/science.1113357 ↗
4. Multiferroics: progress and prospects in thin films10.1038/nmat1805 ↗
5. Applications of modern ferroelectrics10.1126/science.1129564 ↗
6. Multiferroics: towards a magnetoelectric memory10.1038/nmat2189 ↗
7. A morphotropic phase boundary system based on polarization rotation and polarization extension10.1063/1.3479479 ↗
8. Pressure-induced anomalous phase transitions and colossal enhancement of piezoelectricity in PbTiO310.1103/PhysRevLett.95.037601 ↗
9. Jaffe · 1971
10. Goldschmidt · Sci. Nat. · 1926 · 14 · 47710.1007/BF01507527 ↗
11. Characterizations of epitaxial Bi(Mg1/2Ti1/2)O3–Bi(Zn1/2Ti1/2)O3 solid solution films grown by pulsed laser deposition10.7567/JJAP.53.05FE06 ↗
12. Lead-free piezoelectric ceramics: alternatives for PZT?10.1007/s10832-007-9047-0 ↗
13. Perspective on the development of lead-free piezoceramics10.1111/j.1551-2916.2009.03061.x ↗
14. Progress in engineering high strain lead-free piezoelectric ceramics10.1088/1468-6996/11/4/044302 ↗
15. Piezoelectric materials for high temperature sensor10.1111/j.1551-2916.2011.04792.x ↗
16. Formation of BiFeOs and determination of unit cell
17. A polar oxide with a large magnetization synthesized at ambient pressure10.1021/ja054839w ↗
18. A pure bismuth a site polar perovskite synthesized at ambient pressure10.1002/anie.200703146 ↗
19. Crystal structure of metastable perovskite Bi(Mg1/2Ti1/2)O3: bi-based structural analogue of antiferroelectric PbZrO310.1002/chin.200702020 ↗
20. Local structure of a pure Bi A site polar perovskite revealed by pair distribution function analysis and reverse Monte Carlo modeling: correlated off-axis displacements in a rhombohedral material10.1021/ja210698e ↗
21. Contributions to the piezoelectric effect in ferroelectric single crystals and ceramics10.1111/j.1551-2916.2005.00671.x ↗
22. Piezoelectric response and free energy instability in the perovskite crystals BaTiO3, PbTiO3 and Pb(Zr,Ti)O310.1103/PhysRevB.73.174106 ↗
23. Morphotropic phase boundary in the Pb-free (1-x)BiTi3/8Fe2/8Mg3/8O3–xCaTiO3 system: tetragonal polarization and enhanced electromechanical properties10.1002/adma.201405452 ↗
24. Rotator and extender ferroelectrics: importance of the shear coefficient to the piezoelectric properties of domain-engineered crystals and ceramics10.1063/1.2653925 ↗
25. A morphotropic phase boundary system based on polarization rotation and polarization extension10.1063/1.3479479 ↗
26. Pressure-induced anomalous phase transitions and colossal enhancement of piezoelectricity in PbTiO310.1103/PhysRevLett.95.037601 ↗
27. Infrared phonon dynamics of multiferroic BiFeO3 single crystal10.1103/PhysRevB.76.172105 ↗
28. Weak ferromagnetic ordering in Ca doped polycrystalline BiFeO310.1063/1.3678449 ↗
29. Charge defects and highly enhanced multiferroic properties in Mn and Cu co-doped BiFeO3 thin films10.1016/j.apsusc.2014.02.159 ↗
30. M.S.Ramachandra Rao, Chemical pressure effect on optical properties in multiferroic bulk BiFeO310.1063/1.4757589 ↗
31. Dielectric relaxation and magneto-dielectric effect in polycrystalline Bi0.9Ca0.1FeO2.9510.1063/1.4729415 ↗
32. New high T(c) multiferroics KBiFe2O5 with narrow band gap and promising photovoltaic effect10.1038/srep01265 ↗
33. Composition dependence of structure and optical properties of Cu2ZnSn(S,Se)4 solid solutions: an experimental study10.1016/j.jallcom.2011.08.099 ↗
34. Defect correlated fluorescent quenching and electron phonon coupling in the spectral transition of Eu3+ in CaTiO3 for red emission in display application10.1063/1.4876316 ↗
35. Charge transfer transitions in multiferroic BiFeO3 and related ferrite insulators10.1103/PhysRevB.79.235128 ↗
36. First-principles calculation of the bulk photovoltaic effect in KNbO3 and (K,Ba)(Ni,Nb)O3-δ10.1103/PhysRevB.91.165124 ↗
37. A novel series of the new visible-light-driven photocatalysts MCo1/3Nb2/3O3(M=Ca, Sr and Ba) with special electronic structures10.1021/jp0340919 ↗
38. Designing switchable polarization and magnetization at room temperature in an oxide10.1038/nature14881 ↗
39. The origin of magnetism in perovskite ferroelectric ABO3 nanoparticles (A=K, Li; B=Ta, Nb or A = Ba, Sr, Pb; B = Ti)10.1063/1.4748319 ↗
40. Magnetism switching and band-gap narrowing in Ni-doped PbTiO3 thin films10.1063/1.4921459 ↗
41. Ferromagnetism in Fe-doped SnO2 thin films10.1063/1.1650041 ↗
42. Room-temperature ferromagnetism in Fe-doped PbTiO3 nanocrystals10.1063/1.2766839 ↗
43. Structural phase transition, narrow band gap, and room-temperature ferromagnetism in [KNbO3]1−x[BaNi1/2Nb1/2O3-δ]x ferroelectrics10.1063/1.4896317 ↗
44. Magnetic, dielectric properties, and scaling behaviors of Aurivillius compounds Bi6−x∕3Fe2Ti3−2x(WCo)xO18 (0≤x≤0.15)10.1063/1.4915089 ↗