Effects of heat treatment conditions on the structural and magnetic properties of MgCuZn nano ferrite

Sujatha, Ch.; Reddy, K. Venugopal; Babu, K. Sowri; Reddy, A. Ramachandra; Rao, K. H.

doi:10.1016/j.ceramint.2012.04.029

Cited by 49 publications

(16 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is clearly seen that with T a increasing from 500 • C to 800 • C, the M s increases from 54.81 emu/g to 75.12 emu/g and the D increases from 12 nm to 36 nm. It is well known that the saturation magnetization can be tuned both by intrinsic and extrinsic parameters like composition and grain size respectively [24]. Because all the samples have the same chemical composition, the reason for the changes of M s should be the increasing of crystallite size with calcining temperature resulting in the formation of multi domain particles.…”

Section: Methodsmentioning

confidence: 99%

Structural and magnetic properties of Ni0.15Mg0.1Cu0.3Zn0.45Fe2O4 ferrite prepared by NaOH-precipitation method

Hou

Wang

2015

Materials Science and Engineering: B

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Structural and magnetic properties of Ni0.15Mg0.1Cu0.3Zn0.45Fe2O4 ferrite prepared by NaOH-precipitation method

Hou

Wang

2015

Materials Science and Engineering: B

View full text Add to dashboard Cite

“…From a practical perspective, the PA6/SEBS-MA nanocomposites reinforced with Ni-Zn-C will tend to have higher saturation magnetization. 60…”

Section: X-ray Diffractionmentioning

confidence: 99%

Preparation of flexible and magnetic PA6/SEBS‐MA nanocomposites reinforced with Ni‐Zn ferrite

et al. 2021

View full text Add to dashboard Cite

Magnetic and flexible nanocomposites of polyamide 6 (PA6)/styrene-(ethylene-butylene)-styrene grafted with maleic anhydride (SEBS-MA) were prepared using Ni-Zn ferrite synthesized by combustion reaction. Thermal treatment was applied to the Ni-Zn ferrite to form a more crystalline phase.The nanocomposites were processed in an internal mixer and later injection molded. The materials were characterized by torque rheometry, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Izod impact strength, tensile strength, magnetic measurements, differential scanning calorimetry (DSC), thermogravimetry (TG), heat deflection temperature (HDT), and scanning electron microscopy (SEM). Ferrite calcination led to a higher degree of crystallinity and nanocomposites with a higher number of crystalline peaks. This favored a higher saturation magnetization. The magnetic hysteresis curves of the nanocomposites indicated a ferrimagnetic behavior. The impact strength and elongation at break increased significantly compared to neat PA6, suggesting the formation of flexible and magnetic nanocomposites. This behavior was ascribed to a chemical reaction between the terminal amine groups of PA6 and the maleic anhydride of SEBS-MA, confirmed by FTIR and torque rheometry. Neat PA6 and the nanocomposites showed similar thermogravimetric, HDT, melting temperature, and crystallization properties. SEM results showed that the dispersed ferrite tends to form agglomerates, especially if calcined. In general, the addition of the non-calcined Ni-Zn ferrite to the PA6 matrix improved the mechanical properties. Conversely, the calcination of ferrite tended to improve the magnetic behavior of the nanocomposites.

show abstract

“…These characteristics depend on the route of synthesis of the nanoparticles and the methods used to prepare and stabilize colloidal systems. The nanoparticles of cobalt ferrite (CoFe 2 O 4 ) are remarkably interesting due to its high coercivity [21] moderate saturation magnetization [22], high magnetocrystalline anisotropy [23] and high structural stability at higher temperatures and chemical [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic nanoparticles of cobalt ferrite coated with silica

2019

Biointerface Res Appl Chem

View full text Add to dashboard Cite

There are several methods available for magnetic nanoparticles (MNP) synthesis, and in this study the coprecipitation method is employed. The cobalt ferrites (CF) were prepared using aqueous solutions of Co2+ and Fe3+ chloride with a stoichiometry proportion of Co:Fe = 1:2. Thus, the aging temperatures were 27, 27/98, 60, 80 and 98 ºC, during which the precipitation occurred at 27 °C and the aging one at 98 °C for the FC27/98 sample. As a result, the study showed that a single crystal phase material was obtained at the aging temperature of 98 °C during 1 h and with a mean particle size of 42 nm ± 7.4 nm and degree of polydispersity of 18%. The FC98/SiOH coated nanoparticle had a surface area of 11 m2 g-1, saturation magnetization of 10.05 emu g-1 a mean particle size of 773.4 nm ± 131.1 nm and a degree of polydispersity of 17 %. It was possible to confirm that it had a silica coating of cobalt ferrite nanoparticles by DRIFT and EDX indicated the presence of silica.

show abstract

Effects of heat treatment conditions on the structural and magnetic properties of MgCuZn nano ferrite

Cited by 49 publications

References 30 publications

Structural and magnetic properties of Ni0.15Mg0.1Cu0.3Zn0.45Fe2O4 ferrite prepared by NaOH-precipitation method

Structural and magnetic properties of Ni0.15Mg0.1Cu0.3Zn0.45Fe2O4 ferrite prepared by NaOH-precipitation method

Preparation of flexible and magnetic PA6/SEBS‐MA nanocomposites reinforced with Ni‐Zn ferrite

Synthesis and characterization of magnetic nanoparticles of cobalt ferrite coated with silica

Contact Info

Product

Resources

About