Low-temperature magnetic properties of erbium doped bismuth nano-ferrites

Abstract

Nano-crystalline Pure and Erbium(Er) substituted Bismuth ferrite nano-particles were synthesized by the citrate-gel auto combustion method. Synthesized powders were sintered at 500 0 C for ve hours in an air and characterized by XRD, TEM and HR-TEM. X-ray diffraction (XRD) analysis showed distorted rhombohedral structure of the ferrites. The surface morphology and particle size of the samples was observed by high resolution transmission electron microscopy. The lattice parameter, crystalline size, Xray density has been calculated from d-spacing. The perceived results can be explained depending on doping concentration. Temperature dependence of magnetic properties of Bi-Er nano-particles were carried out by using vibrating sample magnetometer (VSM). The magnetization as a function of applied eld at ± 100 Oe was carried out at 3K and 300K. Zero eld cooled and (ZFC) and Field cooled (FC) magnetization measurements under an applied of 100 Oe in the temperature range of 3-360K. These measurements give the results of blocking temperature (T b ) at around 350K.

Retracted: Rare Earth Nd3+ Doping Cobalt-Cadmium Nanoferrites Structural, Optical, and Magnetic Properties and Applications

“…samples, which can be attributed to the disorder of the metal ions in the crystalline sites and vacancies. [27][28][29][30] UV-DRS spectra.-The optical behaviour of the Co 0.4 Cd 0.6 Nd x Fe 2-x O 4 (X = 0.000, 0.003, 0.005, 0.007, 0.009, 0.011) nanoparticles was studied using UV-vis spectra at room temperature in the wavelength range of 200-800 nm. In Fig.…”