scholarly journals Investigating the Effect of Zn Ferrite Nanoparticles on the Thermomechanical, Dielectric and Magnetic Properties of Polymer Nanocomposites

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3015 ◽  
Author(s):  
Aikaterini Sanida ◽  
Sotirios G. Stavropoulos ◽  
Thanassis Speliotis ◽  
Georgios C. Psarras
Keyword(s):  
Magnetic Properties ◽  
Polymer Matrix ◽  
Quantum Interference ◽  
Zinc Ferrite ◽  
Interfacial Polarization ◽  
Ferrite Nanoparticles ◽  
Scanning Calorimetry ◽  
Sem Images ◽  
Zn Ferrite ◽  
The Matrix

In this study nanocomposites consisting of an epoxy resin and ceramic zinc ferrite nanoparticles have been successfully developed and investigated morphologically and structurally by means of scanning electron microscopy (SEM) images and X-ray diffraction (XRD) spectra. The thermal properties of the nanocomposites were studied via differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The thermomechanical characterization of the fabricated nanocomposites was studied via dynamic mechanical analysis (DMA) and the magneto-dielectric response was assessed by means of a broadband dielectric spectroscopy (BDS) and by employing a superconducting quantum interference device (SQUID) magnetometer. Data analysis demonstrates that the incorporation of nanoinclusions into the matrix improves both the thermomechanical and the dielectric properties of the systems, as indicated by the increase of the storage modulus, the real part of dielectric permittivity and conductivity values with filler content, while at the same time induces magnetic properties into the matrix. Zinc ferrite nanoparticles and their respective nanocomposites exhibit superparamagnetic behavior at room temperature. Three relaxations were recorded in the dielectric spectra of all systems; originating from the filler and the polymer matrix, namely interfacial polarization, glass to rubber transition of the polymer matrix and the reorientation of small polar side groups of the polymer chain.

Temperature and field dependences of transverse relaxivity of Co–Zn ferrite nanoparticles coated with silica: The role of magnetic properties and different regimes

2021 ◽  
Vol 260 ◽  
pp. 124178
Author(s):  
Pavel Veverka ◽  
Lenka Kubíčková ◽  
Zdeněk Jirák ◽  
Vít Herynek ◽  
Miroslav Veverka ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ferrite Nanoparticles ◽  
Zn Ferrite

Magnetic Properties of Zinc Ferrite Nanoparticles

2012 ◽  
Vol 48 (11) ◽  
pp. 3630-3633 ◽  
Author(s):  
G. Thirupathi ◽  
R. Singh
Keyword(s):  
Magnetic Properties ◽  
Zinc Ferrite ◽  
Ferrite Nanoparticles

scholarly journals Crystal chemistry and single-phase synthesis of Gd3+substituted Co–Zn ferrite nanoparticles for enhanced magnetic properties

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 25258-25267 ◽  
Author(s):  
R. A. Pawar ◽  
Sunil M. Patange ◽  
A. R. Shitre ◽  
S. K. Gore ◽  
S. S. Jadhav ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Crystal Chemistry ◽  
Single Phase ◽  
Secondary Phase ◽  
Ferrite Nanoparticles ◽  
Magnetic Interactions ◽  
Phase Synthesis ◽  
Zn Ferrite ◽  
Properties Of Materials

Rare earth (RE) ions are known to improve the magnetic interactions in spinel ferrites if they are accommodated in the lattice, whereas the formation of a secondary phase leads to the degradation of the magnetic properties of materials.

scholarly journals Mechanical and Thermal Characterization of Natural Intralaminar Hybrid Composites Based on Sisal

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 866 ◽  
Author(s):  
Alexandre L. Pereira ◽  
Mariana D. Banea ◽  
Jorge S.S. Neto ◽  
Daniel K.K. Cavalcanti
Keyword(s):  
Thermal Properties ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Thermal Characterization ◽  
Mechanical And Thermal Properties ◽  
Scanning Calorimetry ◽  
Sem Images ◽  
The Matrix ◽  
American Society ◽  
Curaua Fibers

The main objective of this work was to investigate the effect of hybridization on the mechanical and thermal properties of intralaminar natural fiber-reinforced hybrid composites based on sisal. Ramie, sisal and curauá fibers were selected as natural fiber reinforcements for the epoxy matrix based composites, which were produced by the hand lay-up technique. Tensile, flexural and impact tests were carried out according to American society for testing and materials (ASTM) standards to characterize the hybrid composites, while differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to evaluate the thermal properties. It was found that the mechanical properties are improved by hybridization of sisal based composites. The thermal analysis showed that the hybridization did not significantly affect the thermal stability of the composites. A scanning electron microscopy (SEM) was used to examine the fracture surface of the tested specimens. The SEM images showed a brittle fracture of the matrix and fiber breakage near the matrix.

An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn–ferrite nanoparticles

2013 ◽  
Vol 25 (8) ◽  
pp. 086001 ◽  
Author(s):  
Bratislav Antic ◽  
Marija Perovic ◽  
Aleksandar Kremenovic ◽  
Jovan Blanusa ◽  
Vojislav Spasojevic ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Thermal Treatment ◽  
Treatment Effects ◽  
Ferrite Nanoparticles ◽  
Zn Ferrite ◽  
Integrated Study ◽  
Microstructure And Magnetic Properties
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