Rheological investigation of strain rate and magnetic field on the magnetorheology of zinc ferrite ferrofluid

Ibiyemi, A. A.; Yusuf, Gbadebo Taofeek

doi:10.1007/s00339-022-05720-9

Cited by 11 publications

(7 citation statements)

References 76 publications

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“…E g ? 3F 2g , however the Raman spectrum is generally dominated by three most intense peaks, namely A 1g , F 2g (2) and F 2g (3). The total symmetric mode A 1g generally falls between 570 and 780 cm -1 , the F 2g (3) and the F 2g (2) at about 450-500 cm -1 and 350-400 cm -1 , respectively.…”

Section: Resultsmentioning

confidence: 96%

“…The arising interest in studying this kind of systems, relies on their interesting magnetic, thermal, mechanical, and electrical properties, as well as for their chemical stability. Moreover, ZFO thanks to earth abundance, easy synthesis way in nanostructured form as well as non-toxicity of the Zn ions, is suitable to be used in different applicative fields as for instance, drug delivery, sensing [1], information storage [2], as ferrofluids [3], as magnetic resonance imaging (MRI) contrast agents and for radiofrequency magnetic hyperthermia (MH) [4].…”

Section: Introductionmentioning

confidence: 99%

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Raman spectroscopy in pure and doped zinc ferrites nanoparticles

Albini

Restelli

Ambrosetti

et al. 2023

J Mater Sci: Mater Electron

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Raman spectroscopy was applied on nanostructured ZnFe2O4 system in order to correlate its structural, chemical, and vibrational properties to the functional behaviour, in view of the high sensitivity of the Raman probe to the cationic order in iron oxides. In particular we investigated pure and Ga/Mg doped zinc ferrite nanoparticles synthesised by co-precipitation route by means of Raman spectroscopy with a particular focus on the correlation between their structural and magnetic properties. We firstly studied the homogeneity of the samples at the micrometer scale and their stability under laser irradiation disregarding the presence of spurious iron oxides in favour of a highly defective external shell of the nanoparticles. This hypothesis was corroborated by varying the incident laser wavelength therefore changing the investigated volume. Furthermore, we estimated the inversion degree of the spinel structure finding good agreements with the trend of the magnetic features. All the evidence found through Raman spectroscopy are supported by the results obtained with X-Ray Powder Diffraction, Electron Paramagnetic Resonance and SQUID magnetometry.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Raman spectroscopy in pure and doped zinc ferrites nanoparticles

Albini

Restelli

Ambrosetti

et al. 2023

J Mater Sci: Mater Electron

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“…When the system reaches equilibrium, it stabilizes and achieves steady 13 state flow. Studies demonstrate that the applied strain needs to be kept to a minimum to prevent frustration of the equilibrium state [48]. By delivering a sufficient relaxation modulus at predetermined intervals, the stress is able to relax and prevent the system from permanently deforming.…”

Section: Torque Of Manganese-zinc Ferrite Ferrofluid At Differentmentioning

confidence: 99%

Advance effect of magnetic field on the rheological properties of manganese zinc ferrite ferrofluid

Ibiyemi,

Akinrinola,

Yusuf

et al. 2024

J. Nig. Soc. Phys. Sci.

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The rheological characteristics of manganese zinc (Mn-Zn) ferrite magnetic nanofluid synthesized using co-precipitation technique were examined in the absence and presence of magnetic fields. The research formulates required conditions needed for the formation of a gelly-like structure. The impact of magnetic field and temperature on the rheological properties of Mn-Zn ferrite ferrofluid is investigated. When a magnetic field was applied, higher magnetoviscoelasticity and magnetoviscosity were formed. Analysis was also done on other rheological parameters, such as the damping factor, which is crucial for regulating and restricting vibrations in a system. A stiff, gel-like structure is produced when a magnetic field is applied, and the gel-like quality grows as the magnetic field increases; when the magnetic field is removed, the gel-like and rigidity of the structure is lost. At low temperatures, the liquid phase is dominated by solid-like particles, whereas at high temperatures, the liquid-like structure is dominant. This study reveals the conditions required for the creation of high viscous effect and the viscoelastic behavior induced by the field offers important insights for optimizing the Mn-Zn ferrite ferrofluid for a range of applications. Other criterial for gel-like structure formation such as low torque and deflection angle of the ferrofluid were also established.

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“…The particles are joined by chains and bound together to form a chain-like structure when a magnetic field is applied. These structures were created by assembling various nanoparticles [33]. When the energy of the magnetic interaction between the particles outweighs both the heat energy and Browning motion of the microscopic particles, the magnetic particles self-assemble into chain clusters.…”

Section: Rheological Properties 321 Shear Magneto-viscous Effect Of Z...mentioning

confidence: 99%

“…As shown in figures 4(a) and (b), we investigated the effects of low and high temperatures on the free flow of zinc ferrite ferrofluid in both the absence and presence of magnetic fields. Depending on the amount of shear stress applied to the system, the induced cross-linking network of the chains in fluid structures may either become stronger or weaker [33]. If a low shear rate and low temperature are applied to the system, the result demonstrates that the rheological system is loaded with low shear stress.…”

Section: Shear Stress Of Zinc Ferrite Ferrofluidmentioning

confidence: 99%

A trivalent ferrite ferrofluid compound’s rheological response to angular frequency, magnetic induction and shear induction of chain clusters

Abideen A,

Pant

2023

Phys. Scr.

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At low and high temperatures in the presence and absence of magnetic fields, the effects of shear rate, angular frequency, and shear strain on the rheological characteristics of zinc ferrite ferrofluid is investigated. Chemical co-precipitation was used to create a zinc ferrite ferrofluid that was then coated with oleic acid to improve the stability of the fluid's particles and avoid particle agglomeration. We looked at the rheological characteristics caused by the induced magnetic field, such as the shear stress, complex viscosity, storage modulus, loss modulus, relaxation modulus, viscous torque, damping factor, and figure of merit. From the analysis of time dependent relaxation modulus, a steady-state rheological system is formed at time interval beyond 50 s. As the shear and complex viscosities increase with an increase in magnetic field and a decrease in temperature, obstruction to fluid flow is produced. When a rheological system operates at low angular frequency and high shear rate, high shear stress is loaded; when it operates at high angular frequency and low shear rate, low shear stress is loaded. The oscillatory mode test demonstrates a change in structure from solid to liquid due to the establishment of a crossover point, supporting the solid-liquid phase transition behavior. The damping analysis demonstrates that the system is in fact excessively dampened, and it may now be utilized to reduce vibrations in a system. The system is really overdamped, according to the damping study, and can therefore be used to reduce vibrations in other systems. The fluid exhibits non-Newtonian shear-thinning behavior as shear rates increase. A high viscous torque is created at low shear strain and high angular frequency, which leads to the creation of a strong rotating magnetic field.

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Rheological investigation of strain rate and magnetic field on the magnetorheology of zinc ferrite ferrofluid

Cited by 11 publications

References 76 publications

Raman spectroscopy in pure and doped zinc ferrites nanoparticles

Raman spectroscopy in pure and doped zinc ferrites nanoparticles

Advance effect of magnetic field on the rheological properties of manganese zinc ferrite ferrofluid

A trivalent ferrite ferrofluid compound’s rheological response to angular frequency, magnetic induction and shear induction of chain clusters

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