We show that a common feature of temperature-dependent microwave absorption is the presence of absorption peaks. ac loss peaks can arise when the internal T -dependent magnetic relaxation time crosses the measurement frequency. These features are observed in the insulating (SrxCa14−xCu24O41, La5/3Sr1/3NiO4 and Y Ba2Cu3O6.0), pseudo-gap (T > Tc in underdoped Y Ba2Cu3O7−δ , Hg : 1223 and Hg : 120...

Abstract The boronizing kinetics of AISI 316L steel has been analyzed by employing five prediction models. boron diffusion coefficients as well the growth rate constants in FeB and Fe 2 B phases were firstly evaluated range 1123-1223 K. Afterwards, values activation energies secondly deduced adopting Arrhenius relationships.In addition, models have validated experimentally for two conditions (1...