Enhanced structural and magnetic ordering in as-synthesized Ca doped bismuth iron oxide nanoceramics

Tahir, Muhammad; Riaz, Saira; Hussain, Syed Sajjad; Nairan, Adeela; Akbar, Aseya; Saleem, Murtaza; Atiq, Shahid; Naseem, Shahzad

doi:10.1016/j.jallcom.2020.154725

Cited by 13 publications

(5 citation statements)

References 37 publications

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“…Besides C, Bi, and O elements, the XPS spectrum also indicates presence of pure Fe and Fe 3+ content at 709-727 eV on the surface, which could be potentially be related to the parasitic compound of Fe 3 O 4 oxide [23]. Fe 2p 3/2 and Fe 2p 1/2 [24] both correspond with Fe 2+ and can be observed on the spectrum (Figures 6g and 7g) [25].…”

Section: Results and Observationmentioning

confidence: 92%

Exploring the Piezoelectric Properties of Bismuth Ferrite Thin Films Using Piezoelectric Force Microscopy: A Case Study

et al. 2023

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Over recent decades, the scientific community has managed to make great progress in the theoretical investigation and practical characterization of bismuth ferrite thin films. However, there is still much work to be completed in the field of magnetic property analysis. Under a normal operational temperature, the ferroelectric properties of bismuth ferrite could overcome the magnetic properties due to the robustness of ferroelectric alignment. Therefore, investigation of the ferroelectric domain structure is crucial for functionality of any potential devices. This paper reports deposition and analyzation of bismuth ferrite thin films by Piezoresponse Force Microscopy (PFM) and XPS methods, aiming to provide a characterization of deposited thin films. In this paper, thin films of 100 nm thick bismuth ferrite material were prepared by pulsed laser deposition on multilayer substrates Pt/Ti(TiO2)/Si. Our main purpose for the PFM investigation in this paper is to determine which magnetic pattern will be observed on Pt/Ti/Si and Pt/TiO2/Si multilayer substrates under certain deposition parameters by utilizing the PLD method and using samples of a deposited thickness of 100 nm. It was also important to determine how strong the measured piezoelectric response will be, considering parameters mentioned previously. By establishing a clear understanding of how prepared thin films react on various biases, we have provided a foundation for future research involving the formation of piezoelectric grains, thickness-dependent domain wall formations, and the effect of the substrate topology on the magnetic properties of bismuth ferrite films.

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Section: Results and Observationmentioning

confidence: 92%

Exploring the Piezoelectric Properties of Bismuth Ferrite Thin Films Using Piezoelectric Force Microscopy: A Case Study

et al. 2023

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“…Verma and Kotnala 73 found the saturation magnetisation at 300 K of their BFO at 4.73 emu/g, increasing up to 8.99 emu/g upon 10% doping with Pb. Tahir et al 74 showed the increase of room temperature saturation magnetisation from 9.202 emu/g for neat BFO to as high as 21.097 emu/g upon 30% doping with Ca.…”

Section: Resultsmentioning

confidence: 99%

Structural, electrical, and magnetic study of La-, Eu-, and Er- doped bismuth ferrite nanomaterials obtained by solution combustion synthesis

Wrzesińska

Khort

Witkowski

et al. 2021

Sci Rep

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In this work, the multiferroic bismuth ferrite materials Bi0.9RE0.1FeO3 doped by rare-earth (RE = La, Eu, and Er) elements were obtained by the solution combustion synthesis. Structure, electrical, and magnetic properties of prepared samples were investigated by X-ray photoelectron spectroscopy, Mössbauer spectroscopy, electrical hysteresis measurement, broadband dielectric spectroscopy, and SQUID magnetometry. All obtained nanomaterials are characterized by spontaneous electrical polarization, which confirmed their ferroelectric properties. Investigation of magnetic properties at 300.0 K and 2.0 K showed that all investigated Bi0.9RE0.1FeO3 ferrites possess significantly higher magnetization in comparison to bismuth ferrites obtained by different methods. The highest saturation magnetisation of 5.161 emu/g at 300.0 K was observed for the BLaFO sample, while at 2.0 K it was 12.07 emu/g for the BErFO sample. Several possible reasons for these phenomena were proposed and discussed.

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“…Costa et al prepared Ca doped BFO thin films by polymeric precursor method to enhance the ferromagnetic and ferroelectric properties [32]. Tahir et al synthesized Ca doped BFO nanoparticles using sol-gel method varying the concentration of Ca from x = 0.00 to 0.50 with an interval of 0.10 and obtained the maximum polarization of 3.58 × 10 −4 µC cm −2 and saturation magnetization of 21.097 emu g −1 for 30% Ca doped BFO nanoparticles [33]. Again Jesus et al tried to synthesize Ca doped BFO compacts by high-energy ball milling method and obtained a phase transition of rhombohedral to orthorhombic crystal structure.…”

Section: Introductionmentioning

confidence: 99%

A correlation of lattice distortion with the magnetic properties of calcium doped bismuth ferrite thin films

Pani¹,

Sundaray²

2021

J. Phys. D: Appl. Phys.

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In this work, Bi1−x Ca x FeO3 (for x = 0.00–0.30) single-phase thin films were developed on clean glass substrates via simple spray pyrolysis technique. The microscopic crystal structure and magnetic characteristics of the Ca modified thin films were investigated. X-ray diffraction study confirms the hexagonal structure with the space group R3c for all the prepared thin film samples. The crystallite sizes and lattice strains were computed by using the Williamson–Hall plot. The morphology of the samples was viewed by field emission scanning electron microscopy which shows that the average size of grains systematically decreases with the addition of Ca atom at Bi site. The compositions of samples were confirmed by using energy dispersive spectroscopy. The structural phase transition and the position of different Raman modes were observed by using the Raman spectroscopy technique. The elementary compositions, different oxidation states, and the effect of oxygen vacancies of the elements were observed by x-ray photoelectron spectroscopy. The magnetic field (H) dependence of magnetization (M) (i.e. M–H hysteresis loops) of the pure bismuth ferrite (BFO) and Ca doped BFO thin film samples conducted at room temperature using a vibrating sample magnetometer with an applied magnetic field of ±30 kOe and confirmed that the value of magnetization significantly increases with Ca addition at Bi-site in BFO atom. The maximum value saturation magnetization of 3.8176 emu g−1 and remanent magnetization of 0.1408 emu g−1 obtained for the 25% Ca doped BFO thin films.

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Enhanced structural and magnetic ordering in as-synthesized Ca doped bismuth iron oxide nanoceramics

Cited by 13 publications

References 37 publications

Exploring the Piezoelectric Properties of Bismuth Ferrite Thin Films Using Piezoelectric Force Microscopy: A Case Study

Exploring the Piezoelectric Properties of Bismuth Ferrite Thin Films Using Piezoelectric Force Microscopy: A Case Study

Structural, electrical, and magnetic study of La-, Eu-, and Er- doped bismuth ferrite nanomaterials obtained by solution combustion synthesis

A correlation of lattice distortion with the magnetic properties of calcium doped bismuth ferrite thin films

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