New nonmagnetic aliovalent dopants (Li+, Cu2+, In3+ and Ti4+): Optical and strong intrinsic room temperature ferromagnetism of perovskite BaSnO3

Sharmoukh, Walid; Hameed, Talaat A.; Yakout, S.M.

doi:10.1016/j.jallcom.2022.166702

Cited by 20 publications

(3 citation statements)

References 53 publications

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“…Then Tauc's formula can be represented by the relation between (hνF[R]) 2 and hν, as elucidated in Figure 6B, and the band gap is estimated via extrapolating the linear portion to the x‐axis. It has been found that the band gap of BaSnO 3 is about 3.2 eV which agrees with many previous works 49 …”

Section: Resultssupporting

confidence: 92%

“…43,44 The high mobility of this BaSnO 3 makes it consume low power and hence makes it an interesting material in power electronics. 45 Based on these intriguing features, BaSnO 3 have been employed in highly advanced applications, for instance, dye-sensitized solar cells, 46 as an anode for lithium-ion battery, 47 fuel cells, 48 thermally stable capacitor, 49 photocatalysis, 50 and spintronics devices. 51 For employment in modern technological applications, namely fordable and wearable devices, So, it is inevitable to embed The extensive study of optical and electrical approaches, which have been introduced in this research decided that the whole nanocomposite is suitable for environmentally friendly transparent packaging material for a variety of microelectronic and optoelectronic.…”

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confidence: 99%

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Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Al‐Sulami,

Al‐Nashri,

Al‐Mhyawi

et al. 2024

Polymers for Advanced Techs

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This work is devoted to optimizing the optical and dielectric parameters of polyvinyl alcohol (PVA): polyvinyl pyrrolidone (PVP) (1:1) polymer nanocomposites by controlling barium stannate contents (BaSnO3) aspiring to engage it into flexible optoelectronics and thermally stable capacitors. Herein, high purity BaSnO3 was synthesized by solid‐state route and loaded with different ratios (5–20 wt%) into PVA/PVP blend to form films by solution casting method. Further, the degree of crystallinity (Xc) was highly increased upon increasing the filler contents (BaSnO3), as confirmed by X‐ray diffractometer measurement. The surface morphology pictured by a field emission scanning electron microscope revealed the variation of the surface from smooth to rough surface upon insertion of BaSnO3. The thermodynamic parameters including enthalpy (ΔH), entropy (ΔS), and Gibb's free energy (ΔG) were extracted from TGA measurements and studied in detail. The optical characteristics of plain PVA/PVP and polymer nanocomposite films are explored by UV–Vis–NIR spectrophotometer. The presence of charge‐transfer complexes within the polymer nanocomposites was certified via shifting of band gap energy from 5.02 to 4.33 eV and variation of band tailing energy (Eu) from 0.22 to 0.44 eV. The real and imaginary part of optical conductivity (σp1, σp2) was confirmed to be enhanced with the insertion of BaSnO3. It is also found that the dielectric constant and DC current increased with the insertion of BaSnO3 content, while the dielectric loss decreases. The findings recommend these polymer nanocomposites as a good candidate for green energy applications and high‐performance capacitors.

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Section: Resultssupporting

confidence: 92%

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confidence: 99%

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Al‐Sulami,

Al‐Nashri,

Al‐Mhyawi

et al. 2024

Polymers for Advanced Techs

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“…The recorded diffused reflectance can be used for assessment of the optical band gap by employing the Kubelka‐Munk relation along with Tauc's formula, as below 51,52 :

F_{km} = F (R_{\infty}) = \frac{{(1 - R_{\infty})}^{2}}{2 R_{\infty}}

F (R_{\infty}) hν = B {((), italichν goodbreak- E_{g})}^{normalr}

here B refers to a constant related to the material, R ∞ expresses the reflectance and infinity reflects an infinitely thick layer, “ h ” signifies to Plank constant (6.625 × 10 −34 J s −1 ), ν is the frequency of the incident light, E g denotes the band gap energy, r expresses to the exponent that determines the type of transition, where r = 2 for indirect and 1/2 for direct transition. The optical band gap can be easily determined by plotting the relation of ( F ( R ∞ ) hv ) 2 versus ( hv ), as demonstrated in Figure 7b.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and characterization of (PVDF/PEO)/AgBiSe₂ polymeric membrane with enhanced visible light photocatalytic performance

Ismail,

Nasr,

Hameed

2023

J of Applied Polymer Sci

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Driven by the visible band gap, silver bismuth selenide (AgBiSe2) was loaded in PVDF/PEO blend to enhance the photodegradation of Maxilon blue dye. AgBiSe2 nanoparticles were successfully synthesized by facile solvothermal approach and then loaded to PVDF/PEO (80/20) by 10, 20, and 30 wt%, by evaporative casting method. The X‐ray results in tandem with the Fourier transform infrared (FTIR) established the successful fabrication of (PVDF/PEO)/x(AgBiSe2) polymer nanocomposites. The X‐ray analysis verified the formation of hexagonal AgBiSe2 of a crystallite size ranging from 14.3 to 23.24 nm. The FT‐IR results manifested an overlap between functional groups that corroborated the interaction between PVDF and PEO. Peaks of the AgSe, and SeO modes confirmed that the nanofiller and PVDF/PEO blend were successfully incorporated. The micrograph images by field emission scanning electron microscope (FESEM) unraveled the high tendency of AgBiSe2 to form a uniform cluster. The optical band gap was found to be a direct band gap of 2.86 eV for 30 wt% AgBiSe2 proving its validity as visible‐light‐driven photocatalysts. The removal percentages of the prepared membrane are 4.1, 59, 82, and 98 for 0, 10%, 20%, and 30% AgBiSe2 after 300 min of irradiation under simulated sunlight at pH 6.

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Structural, optical and giant dielectric constant properties of pure ktenasite and schulenbergite/CuO minerals

Yakout

Youssef

Mousa

2023

J Mater Sci: Mater Electron

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In this study, schulenbergite [(Cu,Zn)7(SO4)2(OH)10·3H2O)]/CuO and pure ktenasite [(Cu,Zn)5(SO4)2(OH)6·6H2O)] minerals were simply synthesized via addition of sodium sulfide (Na2S) to a mixture of nanosized CuO powder dispersed into Zn(NO3)2·6H2O solution. The X-ray diffraction patterns illustrate the formation of schulenbergite/CuO mineral with ratio of 69:31% and 87/13% owing to additions of 0.1 and 0.2 mol L−1 Na2S, respectively. The addition of 0.4 mol L−1 Na2S substance lead to formation of pure ktenasite [(Cu,Zn)5(SO4)2(OH)6·6H2O)] mineral. The absorption vibration modes based on Fourier-transform infrared (FTIR) analysis verified the formation of schulenbergite/CuO and pure ktenasite compositions. The scanning electron microscope micrographs of schulenbergite/CuO and pure ktenasite samples reveal the formation of mixed grains with needle, sheets, cotton and wool shapes. The selected area electron diffraction images of the synthesized powders show strong dot-rings, indicating polycrystalline nature. Optically, all samples possess a high absorption ability for infrared-visible light wavelengths. At lower frequencies, the pellet of pure ktenasite sample exhibits giant dielectric constant characteristics. Exactly, pure ktenasite sample reveals a dielectric constant value of ~ 1.3 × 106 at frequency of 42 Hz. For schulenbergite/CuO (87/13%) sample, a large dielectric constant value of ~ 5311 was measured at frequency of 42 Hz. The colossal and variable relative permittivity values make the pure ktenasite [(Cu,Zn)5(SO4)2(OH)6·6H2O)] mineral is a suggested material for energy storage applications.

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New nonmagnetic aliovalent dopants (Li+, Cu2+, In3+ and Ti4+): Optical and strong intrinsic room temperature ferromagnetism of perovskite BaSnO3

Cited by 20 publications

References 53 publications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Fabrication and characterization of (PVDF/PEO)/AgBiSe₂ polymeric membrane with enhanced visible light photocatalytic performance

Structural, optical and giant dielectric constant properties of pure ktenasite and schulenbergite/CuO minerals

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New nonmagnetic aliovalent dopants (Li+, Cu2+, In3+ and Ti4+): Optical and strong intrinsic room temperature ferromagnetism of perovskite BaSnO3

Cited by 20 publications

References 53 publications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO3 polymer nanocomposites as promising films for optoelectronics and energy storage applications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO3 polymer nanocomposites as promising films for optoelectronics and energy storage applications

Fabrication and characterization of (PVDF/PEO)/AgBiSe2 polymeric membrane with enhanced visible light photocatalytic performance

Structural, optical and giant dielectric constant properties of pure ktenasite and schulenbergite/CuO minerals

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Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Fabrication and characterization of (PVDF/PEO)/AgBiSe₂ polymeric membrane with enhanced visible light photocatalytic performance