• Terahertz-infrared electrodynamic response for Ba 0.2 Pb 0.8 Al 1-x Fe 12-x O 19 crystals (x=0.0, 1.2, 3.0, 3.3) is studied in detail. A set of THz excitations are observed and assigned to the transitions from A1-term fine structured ground state 2+ . For all 3+ concentrations, ions mainly occupy octahedral site positions. Concentration dependence Fe-O bond length established. The lowest A2u ...

trontium hexaferrite (SrFe 12 O 19 ) nanosized powders were synthesized by sol-gel auto-combustion method with and without cetyltrimethylammonium boromide (CTAB) addition in the sol with Fe/Sr ratio of 11 (using additional Sr). The resultant powders were investigated by X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), Field Emission Scanning Electron Microscope (FESE...

Abstract We report studies on the effect of substituting magnetic Fe 3+ cations with nonmagnetic Al in Y-type hexaferrite Ba 0.5 Sr 1.5 Zn 2 11.92 0.08 O 22 powders their properties and especially phase transitions responsible for observing magnetoelectric effect. In this research, were synthesized by citric acid sol-gel auto-combustion. After auto-combustion process, precursor annealed at 1170...

Analyzing the material composition of iron sand from Cilacap beach and Taluk Kuantan in Riau. In this research, synthesis barium M-Hexaferrite is made beach, research method, test was carried out using analysis with FTIR test. The characteristics that has an Fe content 86.53% does not carry refining. while 82.86% purified. Based on wave number value, BAM doped Cu best value highest transmittanc...

Iron-based hexaferrites are critical-element-free permanent magnet components of magnetic devices. Of particular interest is electron-doped M-type hexaferrite i.e., ${\mathrm{LaFe}}_{12}{\mathrm{O}}_{19}$ (LaM) in which extra electrons introduced by lanthanum substitution barium/strontium play a key role uplifting the magnetocrystalline anisotropy. We investigate electronic structure using dens...