Abstract
Perovskite manganese La_0.7Sr_0.3MnO₃ (LSMO) powders were prepared by sol-gel synthesis and calcination in the temperature (T ) range of 500~1200 o C and their structures and electromagnetic (EM) wave absorption properties were investigated. X-ray diffraction (XRD) analysis revealed that the crystalline perovskite phase can be formed at T ≥ 600 ^oC...... More

Abstract
Spinel ferrites (Ni_0.5Zn_0.5)_1-x-yCo_xCu_yFe₂O₄, (x = 0 and y = 0, x = 0.2 and y = 0, x = 0.1 and y = 0.1, x = 0 and y = 0.2) were prepared by sol-gel method and post-annealed at 1100 ^oC. The grain growth of the sample is very sensitive..... More