Local structure analysis of BO6 (B = Fe, Cu) octahedron correlated with the magnetic properties of Cu-doped Ba0.5Sr0.5FeO3–δ

Fitriana, F.; Zainuri, Mochamad; Baqiya, Malik Anjelh; Kato, Masaru; Kidkhunthod, Pinit; Suasmoro, S.

doi:10.1007/s12034-020-02140-4

Cited by 12 publications

(5 citation statements)

References 23 publications

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“…Fe can be considered as a transition metal that possesses multivalences of 2+, 3+ and, recently reported, 4+ in an octahedron environment. 26 When the metal substitutes Mn in the octahedron site, it then create defects , and Fe x Mn , and for neutralization, and these will affect the electrical properties. Moreover, it decreases the average crystallite size, indicates the appearance of lattice strain, and disrupts chemical bonding, yielding a modification to the 3d configuration of either 3d 4 Mn 3+ or 3d 5 Mn 2+ .…”

Section: Introductionmentioning

confidence: 99%

The effects of Fe-doping on MnO₂: phase transitions, defect structures and its influence on electrical properties

et al. 2021

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Section: Introductionmentioning

confidence: 99%

The effects of Fe-doping on MnO₂: phase transitions, defect structures and its influence on electrical properties

et al. 2021

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“…These EPR results implied the significant changes in the electron configuration and chemical environment of Fe atoms in Ru SA/NiFe-LDH (Figure c). The spin state of Fe was altered from an intermediate state to a high spin state, with the electron configuration changed from d xy 2 d yz 2 d xy 2 d xz 1 d z 2 1 to d xy 2 d yz 1 d xy 1 d z2 1 d x 2 ‑y 2 1 . These microenvironmental changes may explain the activated reactive oxygen revolution and the boosted ECL signals.…”

Section: Resultsmentioning

confidence: 99%

“…. 38 These microenvironmental changes may explain the activated reactive oxygen revolution and the boosted ECL signals.…”

Section: Microstructural Study Of Ru Sa-regulated Nife-ldhsmentioning

confidence: 99%

Addressing the Origin of Single-Atom-Activated Supports Monitored by Electrochemiluminescence

Huang

Xie

et al. 2022

ACS Appl. Mater. Interfaces

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Currently, much attention has been paid to the efforts to stabilize and regulate single atoms through supports to obtain decent electrocatalytic behaviors. However, little concern was given to the effect of single atoms on modulating the electronic structure of supports, despite the catalytic activities and large quantities of supports in the catalytic reactions. Herein, we have localized Ru single atoms onto two-dimensional layered double hydroxide (NiFe-LDH) and studied the role of Ru single atoms in adjusting the electronic structure of the NiFe-LDH support. Spin polarization of 3d electrons for Fe and electron redistribution in NiFe-LDH were effectively modulated through the interaction between Ru single atoms and NiFe-LDH. As a result, the luminol redox reaction and reactive oxygen revolution were simultaneously promoted by Ru single-atom-modulated NiFe-LDH, manifested as boosted electrochemiluminescence (ECL). Therefore, we have provided valid information to reveal the regulation effect of single atoms on the spin state and electronic structure of the supports. It is anticipated that our strategy may arouse wide interest in manipulating single-atom-modulated supports.

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“…XANES analysis used to determine the absorption energy and oxidation state. Oxidation state of Fe atom was calculated with linear interpolation techique (Fitriana et al, 2020). In addition, Transmission Electron Spectroscopy (TEM) used to determine the morphology of LFP Si-6% powder.…”

Section: Methodsmentioning

confidence: 99%

“…XANES analysis in LiFePO4 with Cu doping is performed by comparing the spectrum of samples with those of standard-iron oxide (FeO,Fe2O3 and Fe3O4) and can be used to determine the oxidation state in Fe K-edge due to atomic doping (Cu in Fe) (Muyasaroh et al, 2019). Fitriana et al used interpolation linear technique to estimate the oxidation state of Fe (Fitriana et al, 2020). Husain et al measured XAS characterization in XANES Fe Kedge and analyzed it using linear combination fitting (LCF) to get a ratio of multivalent Fe atom (Husain et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Oxidation State analysis of LiFeSixP1-xO4/C (x = 0.06) with X-ray Absorption Near Edge Structure (XANES) in Fe K-edge and Si K-edge

Intifadhah

Maghfirohtuzzoimah

Az-Zahra

et al. 2021

J. Phys.: Theor. Appl.

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The development of LiFePO4 as a cathode materials on lithium-ion battery was increased with the use of additional techniques such as atomic doping and coating. The material used in this report was LiFeSi0.06P0.94O4/C (LFP Si-6%), synthesized with doping silicon 6% and 11wt% carbon coating by a solid state method. X-ray Absorption Spectroscopy (XAS) characterization was used to investigate the effect on electronic and atomic structure of LFP Si-6%, especially in X-ray Absorption Near Edge Strucuture (XANES) region. XANES data measured on Fe K-edge and Si K-edge. Fe foil, FeO, Fe2O3, FePO4, Si powder, SiO, SiO2 were used as a standard sample for comparison with the result of LFP Si-6%. XANES analysis showed that the energy absorption of Fe K-edge and Si K-edge in LFP Si-6% was 7124.94 eV and 1846.16 eV, respectively. The oxidation state of Fe was Fe2.576+ between Fe2+ and Fe3+, while Si was close to the estimation of Si4+. In addition, the linear combination fitting (LCF) in XANES Fe K-edge was performed to show the ratio of Fe2+/Fe3+ (FeO/Fe2O3).

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Local structure analysis of BO6 (B = Fe, Cu) octahedron correlated with the magnetic properties of Cu-doped Ba0.5Sr0.5FeO3–δ

Cited by 12 publications

References 23 publications

The effects of Fe-doping on MnO₂: phase transitions, defect structures and its influence on electrical properties

The effects of Fe-doping on MnO₂: phase transitions, defect structures and its influence on electrical properties

Addressing the Origin of Single-Atom-Activated Supports Monitored by Electrochemiluminescence

Oxidation State analysis of LiFeSixP1-xO4/C (x = 0.06) with X-ray Absorption Near Edge Structure (XANES) in Fe K-edge and Si K-edge

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Local structure analysis of BO6 (B = Fe, Cu) octahedron correlated with the magnetic properties of Cu-doped Ba0.5Sr0.5FeO3–δ

Cited by 12 publications

References 23 publications

The effects of Fe-doping on MnO2: phase transitions, defect structures and its influence on electrical properties

The effects of Fe-doping on MnO2: phase transitions, defect structures and its influence on electrical properties

Addressing the Origin of Single-Atom-Activated Supports Monitored by Electrochemiluminescence

Oxidation State analysis of LiFeSixP1-xO4/C (x = 0.06) with X-ray Absorption Near Edge Structure (XANES) in Fe K-edge and Si K-edge

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The effects of Fe-doping on MnO₂: phase transitions, defect structures and its influence on electrical properties

The effects of Fe-doping on MnO₂: phase transitions, defect structures and its influence on electrical properties