Oxygen vacancy-induced short-range ordering as a sole mechanism for enhanced magnetism of spinel ZnFe2O4 prepared via a one-step treatment

Wang, Zihan; Yuan, Qiao; Zhang, Yunfei; Ma, Min; Gao, Daojiang; Bi, Jian; Wu, Jiangtao

doi:10.1016/j.ceramint.2021.03.100

Cited by 7 publications

(2 citation statements)

References 32 publications

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“…[34] In addition, it is reported that the enhanced magnetism depends on more oxygen vacancies, which generate short-range ferromagnetism. [35] This result is consistent with the analysis of oxygen vacancies by XPS. Therefore, in this study, size-tunable/magnetic-tunable ZnFe 2 O 4 microspheres are successfully synthesized by different calcination temperatures.…”

Section: Resultssupporting

confidence: 90%

Enhanced Sensitivity of ZnFe₂O₄ Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Zhang,

Cao,

Wang

et al. 2023

Adv Funct Materials

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Semiconductor gas sensor mainly relies on the interaction between sensitive materials and gas to obtain gas information. Deep insight into the interaction mechanism is increasingly important for designing high performance gas sensors. Here, ZnFe2O4 microspheres (MSs) are utilized with tunable magnetism through the assistance of magnetic field to study the essential elements of sensitive processes. The gas sensing properties of ZnFe2O4 MS under different applied magnetic field intensities and various gaseous environments are systematically investigated. The results suggest that ordered magnetic moment induced by magnetic field promotes the probability of contact and reaction between gases and sensitive materials, thus significantly improving the sensitivity. Especially, ZnFe2O4 annealed at 500 °C sensor under the action of 54.6 mT magnetic field exhibits excellent ethanol detection performance (S = 67.8), which is ≈4 times higher than that without magnetic field. By carefully analyzing the experimental results, this research proposes a new physical model called “port docking” to re‐explain the sensitivity mechanism. This work systematically studies the role of the magnetic moment in the sensing process, and provides a new idea for designing high‐performance gas sensors.

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Section: Resultssupporting

confidence: 90%

Enhanced Sensitivity of ZnFe₂O₄ Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Zhang,

Cao,

Wang

et al. 2023

Adv Funct Materials

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“…This kind of observation is further strengthened by the study reported by S Ayyappan et al, [54], where they observed the creation of oxygen vacancies enhanced spin disorder leading to magnetic ordering. In a more recent study, Zihan Wang et al, [55] have explained how the oxygen vacancies break Fe 3+ -O 2--Fe 3+ superexchange interactions and result in Fe 3+ -Fe 3+ ferromagnetism configuration.…”

Section: Resultsmentioning

confidence: 99%

Structural aspects and magnetic properties of Nd3+ doped nickel-zinc ferrites

Ratnaih¹,

Prasad²,

Varma³

et al. 2021

JOR

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Magnetic properties and structural analysis of Nd(Neodymium) doped Ni0.65Zn0.35Fe2O4 using XRD, Rietveld Analysis, FTIR Spectroscopy and VSM are reported.Confirmation of secondary phase formation with increased Nd content is established. Cation distribution for neodymium substituted nickel-zinc ferritesis proposed by considering the deficiency of Fe3+ in NiZnFe2O4 due to secondary phase formation of NdFeO3. The quality of present cation distribution was confirmed through close agreement of experimentally calculated lattice constant and Rietveld refinement. Changes in saturation magnetization with increased Nd content are explained on the basis of intensifying effect on energy exchange (inter-sublattice) between Ni–O–Nd and Ni–O–Fe concnerning Fe–O–Fe interaction, effect of replacing lower magnetic moment Nd3+ (3.62 μB) in place of Fe3+ (5 μB) and exchange developed between the cations existing at B-sites due to creation of oxygen vacancies.

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Magnetic and Microwave Absorbing Properties of Cerium Substituted Zinc Ferrite Synthesized Using Milling Technique

Mashadi¹,

Suyanti

Setiawan³

et al. 2023

J Supercond Nov Magn

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Oxygen vacancy-induced short-range ordering as a sole mechanism for enhanced magnetism of spinel ZnFe2O4 prepared via a one-step treatment

Cited by 7 publications

References 32 publications

Enhanced Sensitivity of ZnFe₂O₄ Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Enhanced Sensitivity of ZnFe₂O₄ Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Structural aspects and magnetic properties of Nd3+ doped nickel-zinc ferrites

Magnetic and Microwave Absorbing Properties of Cerium Substituted Zinc Ferrite Synthesized Using Milling Technique

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Oxygen vacancy-induced short-range ordering as a sole mechanism for enhanced magnetism of spinel ZnFe2O4 prepared via a one-step treatment

Cited by 7 publications

References 32 publications

Enhanced Sensitivity of ZnFe2O4 Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Enhanced Sensitivity of ZnFe2O4 Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Structural aspects and magnetic properties of Nd3+ doped nickel-zinc ferrites

Magnetic and Microwave Absorbing Properties of Cerium Substituted Zinc Ferrite Synthesized Using Milling Technique

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Enhanced Sensitivity of ZnFe₂O₄ Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism

Enhanced Sensitivity of ZnFe₂O₄ Based on Ordered Magnetic Moment Induced by Magnetic Field: A New Insight into Mechanism