Magnetic behavior of nickel ferrite–polyethylene nanocomposites synthesized by mechanical milling process

Magnetic properties of thermal plasma synthesized nanocrystalline nickel ferrite (NiFe2O4)

“…We observed that the overall variation in the magnetization shows a decreasing trend with increasing operating pressure and increasing plasma power. It is well documented that the saturated magnetization, in NiFe 2 O 4 , is related to various factors related to the defects such as cation redistribution, the existence of surface spins, formation of spin glass structures and the presence of NiO [3,22,27,31,[35][36][37]. The fact that the XRD patterns do not indicate the presence of any oxide species apart from NiFe 2 O 4 , the possible lattice defects can arise from the cation redistribution alone.…”

Study of DC conductivity and relative magnetic permeability of nanoparticle NiZnFe2O4/PPy composites

“…Results showed that the magnetic parameters such as saturation magnetization and coercivity of Zn 0.5 Cu 0.5 Fe 2 O 4 have decreased upon PPy coating. Nathani and Misra [5] and Nathani et al [6] had studied magnetic properties of nanocrystalline nickel ferrite-polyethylene nanocomposites synthesized by the mechanical milling process and they suggested the superparamagnetic nature of the nanocomposites because of the absence of hysteresis, remanence and coercivity at room temperature.…”

Em Transmission Response of Microstrip Notch Filter on Obliquely Magnetized Magneto-Dielectric Substrate in Xband Under Influence of Low Magnitude of External Dc Magnetic Field

“…The NiFe 2 O 4 nanoparticles are immobilized in the LDPE matrix throughout the volume of the substrate which disallows agglomeration of the filler particles. The diamagnetic phase of the polymer between the two magnetic particles lowers the exchange interaction phenomenon among the ferrite nanoparticles [27]. The low interparticle exchange interactions results in reduction of saturation magnetization value of the magneto-dielectric composite material and the magnitude of external dc magnetic field required for magnetizing the substrate is also low.…”