Controllable synthesis of one-dimensional isolated Ni 0.5 Zn 0.5 Fe 2 O 4 microtubes for application as catalyst support in RF heated reactors

Lv, Hua-nan; Rebrov, Evgeny V.; Gao, Pengzhao; Ma, Ruixue; Lu, Zhou-li; Xu, Jia

doi:10.1016/j.ceramint.2016.01.214

Cited by 5 publications

(1 citation statement)

References 47 publications

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“…It is known that a single crystal particle is in a multidomain state when its radius is larger than the critical single domain radius ( R sd ). The critical single domain radius can be calculated by eq where A and K 1 are the exchange constant and the magnetic anisotropy constant, respectively, 2.175 × 10 –6 and 1.74 × 10 4 erg·cm –3 for our ZNFO; μ 0 is the permeability of free space. A 45.3 nm critical single domain radius for the ZNFO is then calculated.…”

Section: Resultsmentioning

confidence: 99%

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe₂O₄ Nanofiber and Its Correlated Magnetism Origin

et al. 2022

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Direct identification of the cationic occupation in Ni-doped normal spinel ZnFe 2 O 4 is a prerequisite for understanding the physical mechanism of its tunable magnetic properties and further oriented synthesizing the specific functional ferrite materials. However, the precise occupation of cations in Ni-doped ZnFe 2 O 4 is still in debate, and their atomic imaging in real space is lacking. Herein, we showcase an ordering distribution of cations in Ni-doped normal spinel ZnFe 2 O 4 by the direct observation. Our data evidently clarified that divalent Zn 2+ cations occupied all tetrahedral sites and trivalent Fe 3+ cations occupied all octahedral sites in the ZnFe 2 O 4 single-particle-chain nanofibers. When Ni was doped, Ni 2+ preferentially occupied the octahedral sites, and the excess Fe 3+ was squeezed to the tetrahedral sites. Electron holography and micromagnetic simulations further disclose that the shape anisotropy and dipolar anisotropy determined the magnetic moment distributions of the Ni-doped ZnFe 2 O 4 .

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Section: Resultsmentioning

confidence: 99%

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe₂O₄ Nanofiber and Its Correlated Magnetism Origin

et al. 2022

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Temperature dependence of the magnetic properties of mono-dispersed Co0.5Zn0.5Fe2O4 microtubes derived from different templates

Gao

Huang

Zheng

et al. 2018

J Mater Sci: Mater Electron

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Evaluation of the catalytic effect of ZnO as a secondary phase in the Ni0.5Zn0.5Fe2O4 system and of the stirring mechanism on biodiesel production reaction

Farias

Araújo

Silva

et al. 2020

Arabian Journal of Chemistry

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Controllable synthesis of one-dimensional isolated Ni 0.5 Zn 0.5 Fe 2 O 4 microtubes for application as catalyst support in RF heated reactors

Cited by 5 publications

References 47 publications

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe₂O₄ Nanofiber and Its Correlated Magnetism Origin

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe₂O₄ Nanofiber and Its Correlated Magnetism Origin

Temperature dependence of the magnetic properties of mono-dispersed Co0.5Zn0.5Fe2O4 microtubes derived from different templates

Evaluation of the catalytic effect of ZnO as a secondary phase in the Ni0.5Zn0.5Fe2O4 system and of the stirring mechanism on biodiesel production reaction

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Controllable synthesis of one-dimensional isolated Ni 0.5 Zn 0.5 Fe 2 O 4 microtubes for application as catalyst support in RF heated reactors

Cited by 5 publications

References 47 publications

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe2O4 Nanofiber and Its Correlated Magnetism Origin

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe2O4 Nanofiber and Its Correlated Magnetism Origin

Temperature dependence of the magnetic properties of mono-dispersed Co0.5Zn0.5Fe2O4 microtubes derived from different templates

Evaluation of the catalytic effect of ZnO as a secondary phase in the Ni0.5Zn0.5Fe2O4 system and of the stirring mechanism on biodiesel production reaction

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Product

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Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe₂O₄ Nanofiber and Its Correlated Magnetism Origin

Atomic-Scale Imaging of Dopant Sites in a Ni-Doped Ideal Normal Spinel ZnFe₂O₄ Nanofiber and Its Correlated Magnetism Origin