Effect of doping Strontium ions in co-precipitated cobalt ferrite

Rikamukti, Nilam; Utari,; Purnama, Budi

doi:10.1088/1742-6596/909/1/012012

Cited by 9 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As can be seen, the most important peaks around 450 cm -1 and 600 cm -1 are due to O-Sr-O and O-Fe-O bending vibrations and Fe-O and Sr-O stretching vibrations. Ferrite metal ions occur in tetrahedral (A sites) or octahedral (B sites) sub-lattices depending on their nearest oxygen neighbours [28]. At 600 cm -1 , tetrahedral complex stretching vibration is assigned to band v1, while at 400 cm -1 , octahedral complex stretching vibration is allocated to band v2.…”

Section: Ftirmentioning

confidence: 99%

Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation

et al. 2023

Preprint

View full text Add to dashboard Cite

The research paper examines the transport of three regularly used laboratory organic solvents with varying solubility parameter values over a polymer blend nanocomposite membrane generated by two-roll milling. The three solvents employed (hexane, toluene, and ethanol) have varying solubility parameters. The study aimed to determine how solubility affects diffusion transport parameters in NR/NBR blends. The study indicated that incorporating magnetically active ferrite material decreased solvent absorption, diffusion, sorption, and permeation constants at lower loading. The transport method of NR/NBR nanocomposites was discovered to be unusual. Different solubility values significantly impact transport qualities. Morphological analysis data supports the relationship between ferrite content and other characteristics. The study analysed the influence of blend ratio, size of solvent molecule, and ferrite loading on the diffusion of aromatic and aliphatic solvents within NR/NBR blended systems. Including fillers' reduced swelling coefficient values, indicating a blocked solvent diffusion channel into the polymer matrix. Lower filler loading improved reinforcement, as validated by cross-link density and mechanical qualities. Data on transport was used to develop mathematical models to predict diffusion behaviour and understand the physical process of transport over nanocomposite membranes.

show abstract

Section: Ftirmentioning

confidence: 99%

Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The use of hard magnetic materials as nano-additives in MRF has received considerable attention in recent times [2,[27][28][29]. One such material is cobalt ferrite (CoFe 2 O 4 ), a hard magnetic material with good oxidation stability, high Currie points, many magnetostrictive properties, and high mechanical properties [30,31]. The introduction of CoFe 2 O 4 nano-additives has been found to not only increase the sediment stability of MRF, but strengthen shear stress as well [32].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sr-CoFe2O4 Nanoparticles with Different Particles Sized as Additives in CIP-Based Magnetorheological Fluid

et al. 2021

View full text Add to dashboard Cite

This study investigated the effect of adding strontium (Sr)-doped cobalt ferrite (CoFe2O4) nanoparticles in carbonyl iron particle (CIP)-based magnetorheological fluids (MRFs). Sr-CoFe2O4 nanoparticles were fabricated at different particle sizes using co-precipitation at calcination temperatures of 300 and 400 °C. Field emission scanning electron microscopy (FESEM) was used to evaluate the morphology of the Sr-CoFe2O4 nanoparticles, which were found to be spherical. The average grain sizes were 71–91 nm and 118–157 nm for nanoparticles that had been calcinated at 300 and 400 °C, respectively. As such, higher calcination temperatures were found to produce larger-sized Sr-CoFe2O4 nanoparticles. To investigate the rheological effects that Sr-CoFe2O4 nanoparticles have on CIP-based MRF, three MRF samples were prepared: (1) CIP-based MRF without nanoparticle additives (CIP-based MRF), (2) CIP-based MRF with Sr-CoFe2O4 nanoparticles calcinated at 300 °C (MRF CIP+Sr-CoFe2O4-T300), and (3) CIP-based MRF with Sr-CoFe2O4 nanoparticles calcinated at 400 °C (MRF CIP+Sr-CoFe2O4-T400). The rheological properties of these MRF samples were then observed at room temperature using a rheometer with a parallel plate at a gap of 1 mm. Dispersion stability tests were also performed to determine the sedimentation ratio of the three CIP-based MRF samples.

show abstract

“…Among these spinel ferrites, CoFe 2 O 4 has been proven to increase the rheological properties of MRF. CoFe 2 O 4 is known as a spinel ferrite that has moderate magnetic saturation, high coercivity, high Currie point, large magnetostrictive and high mechanical hardness [38][39][40][41][42][43]. However, CoFe 2 O 4 has the nature of hard magnetic properties that had high coercivity.…”

Section: Introductionmentioning

confidence: 99%

The effect of Mn_xCo_(1-x)Fe₂O₄ with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid

Nugroho

Ubaidillah

Purnama

et al. 2020

Smart Mater. Struct.

View full text Add to dashboard Cite

This study focused on the effect of manganese substituted cobalt ferrite (Mn x Co 1-x Fe 2 O 4 ) nanoparticles with different mole ratios (x = 0, 0.25 and 0.5) in magnetorheological fluids (MRF). The nanoparticles were synthesized using co-precipitation method. The irregularly-spherical form of the nanoparticles was observed/confirmed using a field emission scanning (FESEM) microscope. The vibrating sample magnetometer (VSM) was performed to analyze the effect of nanoparticles in MRF on their magnetic properties. The VSM test results show that the nanoparticles have a negative effect on the magnetic properties of MRF. The higher magnetic saturation of nanoparticles will reduce more magnetic saturation in MRF. This phenomenon shows that the direction of the magnetic field from the cobalt manganese ferrite has the opposite direction to MRF. It is also identified that the field-dependent rheological properties of MRF show that the addition of nanoparticles increases the yield stress of MRF results except for Mn 0.5 Co 0.5 Fe 2 O 4 which leads to the reduction of the yield stress of MRF.

show abstract

Effect of doping Strontium ions in co-precipitated cobalt ferrite

Cited by 9 publications

References 25 publications

Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation

Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation

The Effect of Sr-CoFe2O4 Nanoparticles with Different Particles Sized as Additives in CIP-Based Magnetorheological Fluid

The effect of Mn_xCo_(1-x)Fe₂O₄ with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid

Contact Info

Product

Resources

About

Effect of doping Strontium ions in co-precipitated cobalt ferrite

Cited by 9 publications

References 25 publications

Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation

Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation

The Effect of Sr-CoFe2O4 Nanoparticles with Different Particles Sized as Additives in CIP-Based Magnetorheological Fluid

The effect of MnxCo(1-x)Fe2O4 with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid

Contact Info

Product

Resources

About

The effect of Mn_xCo_(1-x)Fe₂O₄ with x = 0, 0.25 and 0.5 as nanoparticles additives in magnethorheological fluid