Influence of Ba2+ Doping on Structural and Electrical Transport Properties of YMnO3 Ceramics

Shukla, Jyoti; Mishra, Ashutosh

doi:10.1007/s10948-020-05693-x

Cited by 15 publications

(6 citation statements)

References 27 publications

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“…The calculated lattice parameters of the bulk hexagonal CdS ( a = b = 4.139 Å and c = 6.733 Å) agree well with the experimental results ( a = b = 4119 Å, c = 6.7264 Å) . The CdS surface is modeled by a (1 × 2) 7-layer supercell along the − direction having a hexagonal structure containing a total of 56 formula units, as shown in Figure . A vacuum region of 15 Å separated each slab from one another along the (11–20) direction .…”

Section: Resultssupporting

confidence: 82%

“…The red shift in absorption peak has been associated with the decrease in carrier concentration by incorporation of the doped material and a decrease in the band-gap energy. The ionic radius of Ba +2 ions is higher than the pristine exhibit of the red shift . The decrease in band gap ascertained the interaction among s, p, and d suborbitals of the shell.…”

Section: Resultsmentioning

confidence: 93%

“…The ionic radius of Ba +2 ions is higher than the pristine exhibit of the red shift. 15 The decrease in band gap ascertained the interaction among s, p, and d suborbitals of the shell. The d-subshell energy of the Ba +2 ion is almost close to the s-subshell of the same ion.…”

Section: Resultsmentioning

confidence: 99%

“…The use of semiconductor catalysts is favored in dye degradation due to the fact that it is a sustainable and environmentally friendly method for wastewater treatment . Several catalysts have been synthesized, such as transition-metal oxides, ,, metal sulfides, , composite structures, , and dopant materials, ,, to improve the efficiency of degradation. Synthesis of low-cost and high-activity catalysts for removal of toxic dyes is still a challenge .…”

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Barium-Doped Cadmium Sulfide Quantum Dots for the Treatment of Polluted Water: Experimental and Computational Investigations

et al. 2022

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In this study, cadmium sulfide (CdS) quantum dots (QDs) and barium (Ba) (3 and 6 wt %)-doped CdS QDs were synthesized via a hydrothermal technique. The basic purpose of this work is to degrade methylene blue (MB) dye and evaluate density functional theory (DFT). The synthesized samples were characterized through X-ray powder diffraction (XRD), selected area electron diffraction (SAED), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HR-TEM), UV–vis spectrophotometer, PL, and density functional theory (DFT). The XRD (structural analysis) confirmed that the hexagonal crystal structure and crystallinity increased upon doping. Selected area electron diffraction (SAED) analysis confirmed the polycrystalline nature of the prepared QDs. The functional groups have been investigated using FTIR analysis. The surface and structural morphologies of the synthesized specimen have been investigated by applying TEM and FE-SEM, and it was found to exhibit the topology of QDs. In addition, optical characteristics have been investigated via UV–vis absorption spectroscopy, which exhibited a bathochromic shift (red shift) as a consequence of the reduction of the band-gap energy upon doping from 2.56 to 2.38 eV. PL analysis was used to observe the electron–hole recombination rate. Moreover, the electronic and optical properties of Ba-doped CdS were further explored using density functional theory. Pristine and Ba-doped QDs exhibit sufficient catalytic activity (CA) against the MB dye in all media as 62.59, 70.15, and 72.74% in neutral, basic, and acidic solutions, respectively.

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Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Barium-Doped Cadmium Sulfide Quantum Dots for the Treatment of Polluted Water: Experimental and Computational Investigations

et al. 2022

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“…The change in the tilting of the MnO 5 trigonal bipyramid can be tuned by doping ions with distinct radii and variable valences at the Y or Mn sites. Many studies have been conducted on dielectric behaviors, electrical properties, and magnetic properties of YMnO 3 by replacing the elements like Sr, Ca, Dy, Lu, Gd, or Zr at the Y site, or Mn, Mn, Al, Co, Ti, etc., at the Mn site [ 10 , 11 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. For instance, when doping with Lu at the YMnO 3 Y site, the dielectric constant achieved the pinnacle within the solid solution area, but the Curie temperature did not alter [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Modulation of the Structural, Magnetic, and Dielectric Properties of YMnO3 by Cu Doping

Wan,

Hua,

Guo

2024

Materials

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The lower valence compensation of YMn1-xCuxO3 (x = 0.00, 0.05, and 0.10) is prepared by the solid-state reaction, and the effects of divalent cation Cu-doping on the construction and magnetic and dielectric attributes of multiferroic YMnO3 are systemically researched. Powder X-ray diffraction shows YMn1-xCuxO3 has a single-phase hexagonal construction with a P63cm space group as the parent YMnO3, and lattice parameters decrease systematically as Cu concentration increases. Using the scanning electric microscope, structure morphologies analysis shows that the mean grain size varies between 1.90 and 2.20 μm as Cu content increases. YMn1-xCuxO3 magnetization increases as Cu doping concentration increases, and the antiferromagnetic transition temperature declines from 71 K for x = 0.00 to 58 K for x = 0.10. The valence distributions of Mn ions conduce to the modified magnetic attributes. Due to Cu substitution, the dielectric loss and dielectric constant decline as frequency increases from 400 to 700 K, showing representative relaxation behaviors. Indeed, that is a thermally activated process. In addition, the peak of the dielectric loss complies with the Arrhenius law. The relaxation correlates to the dipole effect regarding carrier hopping between Mn3+ and Mn4+, and also correlates to oxygen vacancies generated by Mn2+.

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Ba/Zr Co-substituted h-YMnO3 manganite: study of its structural, optical and electrical properties

et al. 2021

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Influence of Ba2+ Doping on Structural and Electrical Transport Properties of YMnO3 Ceramics

Cited by 15 publications

References 27 publications

Facile Synthesis of Barium-Doped Cadmium Sulfide Quantum Dots for the Treatment of Polluted Water: Experimental and Computational Investigations

Facile Synthesis of Barium-Doped Cadmium Sulfide Quantum Dots for the Treatment of Polluted Water: Experimental and Computational Investigations

Modulation of the Structural, Magnetic, and Dielectric Properties of YMnO3 by Cu Doping

Ba/Zr Co-substituted h-YMnO3 manganite: study of its structural, optical and electrical properties

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