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Hysteresis loop is very important for the application of ferroelectric ceramics. Here the competition effects of grain boundary and aging on the hysteresis loop behavior of Mn doped (Ba0.8Sr0.2)TiO3 ceramics were studied. The results show that a double hysteresis loop appears after aging. Nevertheless, Pmax of small grained ceramics decreased clearly but Pr decreased little with aging time increases;...
The microstructure and mechanical properties of Mg–(6,9)RY–4Zn alloys (RY: Y-rich misch metal) prepared by extrusion and aging treatment have been investigated. The results demonstrate that the alloys in the as-extruded state and peak-aged state share some similar characteristics, i.e. strip-like 14H long period stacking ordered (LPSO) phase and fine dynamic recrystallization (DRX) grains with 14H...
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