Photovoltaic and magnetic properties of BiFeO3/TiO2 heterostructures under epitaxial strain and an electric field

Feng, Hao

doi:10.1016/j.matchemphys.2015.01.034

Cited by 8 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, Burbure et al, [14] studied the orientation and phase relationship between TiO2 films and BaTiO3 substrates, considering that TiO2 has structure and lattice parameters of VO2, they determined that despite having a high mismatch index, bilayers that present good coupling and epitaxy were grown in different crystalline planes. Feng [15] and Sarkar et al [16], worked on the development of multifunctional nanoheterostructures of BiFeO3/TiO2, analyzing photo-ferroelectricity, transport, and non-volatile switching resistances. Zhang et al [17], used combinatorial substrate epitaxy (CSE) in 150 samples, for the determination of the phase and orientation relationships in BiFeO3/TiO2 bilayers.…”

Section: Introductionmentioning

confidence: 99%

Surface and Electrical Characterization of Bilayers Based on BifeO3 and VO2

Martínez¹,

Mosquera²,

Fuenzalida³

et al. 2022

Preprint

View full text Add to dashboard Cite

Thin films of BiFeO3 (BFO), VO2 and BFO/VO2 were grown on SrTiO3(100) and Al2O3(0001) monocrystalline substrates using the RF and DC sputtering techniques. The surface of the films was characterized by profilometry, AFM, and XPS. The heterostructures have roughnesses between 0.2 and 16 nm and a grain size between 20 nm and 67 nm. XPS measurements show a higher proportion of the V4+ and Bi3+ oxides. In the Fe region, a higher proportion of Fe3+ is shown in the films. The homogeneous ordering, low roughnesses, and the oxidation states on the obtained surface show a good coupling in these films. The I-V curves show ohmic behavior at room temperature and change with increasing temperature. The effect of coupling these materials in a thin film shows the appearance of hysteresis cycles I-V and R-T, typical of materials with high potential in applications such as resistive memories and solar cells.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface and Electrical Characterization of Bilayers Based on BifeO3 and VO2

Martínez¹,

Mosquera²,

Fuenzalida³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Furthermore, Burbure et al [ 20 ] studied the orientation and phase relationship between TiO 2 films and BaTiO 3 substrates; considering that TiO 2 has the structure and lattice parameters of VO 2 , they determined that despite having a high mismatch index, bilayers that present good coupling and epitaxy were grown in different crystalline planes. Feng [ 21 ] and Sarkar et al [ 22 ] worked on the development of multifunctional nano-heterostructures of BiFeO 3 /TiO 2 , analyzing photo-ferroelectricity, transport, and non-volatile switching resistances. Zhang et al [ 23 ] used combinatorial substrate epitaxy (CSE) in 150 samples to determine the phase and orientation relationships in the BiFeO 3 /TiO 2 bilayers.…”

Section: Introductionmentioning

confidence: 99%

Surface and Electrical Characterization of Bilayers Based on BiFeO3 and VO2

et al. 2022

View full text Add to dashboard Cite

Thin films of BiFeO3, VO2, and BiFeO3/VO2 were grown on SrTiO3(100) and Al2O3(0001) monocrystalline substrates using radio frequency and direct current sputtering techniques. To observe the effect of the coupling between these materials, the surface of the films was characterized by profilometry, atomic force microscopy, and X-ray photoelectron spectroscopy. The heterostructures, monolayers, and bilayers based on BiFeO3 and VO2 grew with good adhesion and without delamination or signs of incompatibility between the layers. A good granular arrangement and RMS roughness between 1 and 5 nm for the individual layers (VO2 and BiFeO3) and between 6 and 18 nm for the bilayers (BiFeO3/VO2) were observed. Their grain size is between 20 nm and 26 nm for the individual layers and between 63 nm and 67 nm for the bilayers. X-ray photoelectron spectroscopy measurements show a higher proportion of V4+, Bi3+, and Fe3+ in the films obtained. The homogeneous ordering, low roughness, and oxidation states on the obtained surface show a good coupling in these films. The I-V curves show ohmic behavior at room temperature and change with increasing temperature. The effect of coupling these materials in a thin film shows the appearance of hysteresis cycles, I-V and R-T, which is typical of materials with high potential in applications, such as resistive memories and solar cells.

show abstract