居里温度
铁电性
铌酸锂
材料科学
晶格能
极化(电化学)
兴奋剂
结晶学
锂(药物)
格子(音乐)
凝聚态物理
晶体结构
化学
物理化学
光电子学
物理
内分泌学
电介质
铁磁性
医学
声学
摘要
A general expression of the Curie temperature (Tc) and spontaneous polarization (Ps) of lithium niobate (LN) crystals is energetically proposed by employing the viewpoint of the bond energy of constituent chemical bonds within the LN crystallographic frame. The calculated Tc values of various pure and doped LN crystals are in a good agreement with those reported data. Ps values of these LN crystals can also be quantitatively estimated in this work. It is found that the Li site is a sensitive lattice position to dominate the ferroelectricity of LN crystals. This novel method provides us a good understanding of ferroelectric behaviors of LN crystals, which may be applicable to the estimation of ferroelectric behaviors of LN-type solids.
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