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首页> 外文期刊>Inorganic materials >Phase Transformations of Pb_(0.995)La_(0.005)[Zr_(0.95-y)Sn_(0.05)(Mg_(1/3)Nb_(2/3))_y]_(0.99875)O_3 Solid Solutions
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Phase Transformations of Pb_(0.995)La_(0.005)[Zr_(0.95-y)Sn_(0.05)(Mg_(1/3)Nb_(2/3))_y]_(0.99875)O_3 Solid Solutions

机译:Pb_(0.995)La_(0.005)[Zr_(0.95-y)Sn_(0.05)(Mg_(1/3)Nb_(2/3))_ y] _(0.990.99)O_3固溶体的相变

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摘要

We have constructed phase diagrams of Pb_(0.995)La_(0.005)[Zr_(0.95-y)Sn_(0.05)(Mg_(1/3)Nb_(2/3))_y]_(0.99875)O_3 (y = 0-0.02) solid solutions in different electric fields. Our results demonstrate that, by cooling in a constant electric field, the low-temperature rhombohedral ferroelectric phase can be stabilized in a narrow temperature range. It is shown that the phase state below the Curie temperature strongly depends on the temperature-field history of the material. In particular, the low-temperature rhombohedral ferroelectric phase only appears during cooling. At the same time, the temperature-field stability region of the tetragonal antiferroelectric phase is much broader during heating.
机译:我们构建了Pb_(0.995)La_(0.005)[Zr_(0.95-y)Sn_(0.05)(Mg_(1/3)Nb_(2/3))_ y] _(0.99875)O_3(y = 0的相图-0.02)在不同电场中的固溶体。我们的结果表明,通过在恒定电场中冷却,低温菱面体铁电相可以在狭窄的温度范围内稳定。结果表明,居里温度以下的相态很大程度上取决于材料的温度场历史。特别是,低温菱形铁电相仅在冷却期间出现。同时,四方反铁电相的温度场稳定区域在加热期间要宽得多。

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