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Mostrando ítems 41-50 de 166
Nonlinear refraction and absorption through phase transition in a Nd:SBN laser crystal
(AMER PHYSICAL SOC, 2009)
Time-resolved Z-scan measurements were performed in a Nd(3+)-doped Sr(0.61)Ba(0.39)Nb(2)O(6) laser crystal through ferroelectric phase transition. Both the differences in electronic polarizability (Delta alpha(p)) and cross ...
Preparação, caracterização estrutural e magnética da hexaferrita de estrôncio dopada com cobalto
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilPrograma de Pós-Graduação em Engenharia MecânicaUTFPR, 2020-02-27)
In this work, pure samples of strontium hexaferrite (SrFe12O19), were synthesized at three different calcination temperatures of 1000°C, 1100°C, 1200°C. And also samples where Fe ions were replaced by Cobalt ions in four ...
Estabilização estrutural de apatitas de cálcio e/ou estrôncio via co-substituições iônicas
(Pós-Graduação em Engenharia Civil, 2017)
Influence of barium and strontium addition on the ratio c/a of PZT obtained by the polymeric precursor method
(2001-11-09)
Lead zirconate titanate powder, with Zr/Ti ratio of 50/50 was prepared by Pechini method after adding up to 10,0 mol% of Ba +2 and Sr +2 ions. Tetragonal phase is favored by the increase of barium and strontium concentration ...
Influence of barium and strontium addition on the ratio c/a of PZT obtained by the polymeric precursor method
(2001-11-09)
Lead zirconate titanate powder, with Zr/Ti ratio of 50/50 was prepared by Pechini method after adding up to 10,0 mol% of Ba +2 and Sr +2 ions. Tetragonal phase is favored by the increase of barium and strontium concentration ...
Structural characterization and ferroelectric properties of strontium barium niobate (Sr xBa1-xNb2O6) thin films
(ABM, ABC, ABPol, 2001)
Strontium barium niobate (SBN) thin films of good quality were deposited on Pt/Ti/SiO2/Si substrate using a polymeric resin containing metallic ions. Films were crystallized at different temperatures and for different ...
Efeito dos íons Fe3+ na estrutura de perovskitas à base de titânio obtidas via método hidrotérmico de micro-ondasEffect of Fe3+ on the structure of titanium-based perovskites obtained via microwave hydrothermal method
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Química, 2021)