Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Abstract

The current work is mainly devoted to the synthesis, structural, electrical, and magnetic characterization of Sr1−XLaXFe12O19 (X = 0.2–0.8) (SLFO) nanoparticles synthesized via the hydrothermal technique. The hexagonal peaks were determined using X-ray diffraction analysis. The obtained results indicated that the lattice constants were noted to be increasing from 0.58801 to 0.58825 nm (a = b), and 2.30309 to 2.30341 nm (c) with increase of in ‘X’. The morphological studies ensured that the grains as well as nanoparticles of SLFO acquired almost spherical shape. The optical properties were investigated using FTIR and UV–Visible spectra. The optical bandgap (Eg) of SLFO was found to be increasing from 1.866 to 2.118 eV with increase of dopant content. The electrical properties of SLFO were studied in detail as a function of temperature, and frequency. In addition, the dielectric modulus, and impedance spectroscopy analysis was carried out to describe the space charge polarization, and electric conduction mechanism, respectively. The hysteresis loop (M–H curves) of SLFO revealed the decrease of magnetization from 36.34 to 7.17 emu/g with increase in ‘X’.

Relative Investigation on Microwave-Assisted Zr-Modified PbTiO3 and BaTiO3 Ferroelectric Ceramics for Energy Storage Application

“…The ϵ r value has a very modest rise from 40 to 250 °C and is nearly constant. This is due to weak and constant feedback of the charge carriers at this range of temperatures . Beyond 250 °C, a steep rise of ϵ r is noticed.…”

Effect of pH on Structure, Optical, and Dielectric Properties of BaTiO3 Nanoparticles

“…Further, the average grain size was determined using linear intercept method, wherein the formula G avg = 1.5L/MN (where L indicates the test line length, M indicates the magnification, and N indicates the number grains intersecting the test line) was used. [22][23][24] The obtained data confirmed that the G-value was increasing from 96.8 to 117.6 nm with pH. For pH = 10 and 11, the G-values were found to be 106.3 and 112.5 nm, respectively.…”

Low‐temperature hydrothermal synthesis of NiEuFe2O4 nanoparticles: Magnetic, thermal, and magneto‐dielectric behavior

“…The obtained values are almost in good agreement with the crystallite size. This in turn establishes the existence of domain wall rotations, reinforcing the production of coercivity 42 . That means domain wall displacement possesses the low contribution in achieving the H c value.…”

“…That means domain wall displacement possesses the low contribution in achieving the H c value. The cation distribution is performed using the two‐sublattice model 42 . This model says that the total n B can be calculated using the formula M = M B – M A (where individual magnetic moment values of A and B sites are measured).…”