The Eight Pseudo-Spin Model of KH_2PO_4-Type Crystals II. Phase Transitions and Dielectric Susceptibility
The Eight Pseudo-Spin Model of KH_2PO_4-Type Crystals II. Phase Transitions and Dielectric Susceptibility
复制标题
KH_2PO_4型晶体的八个赝自旋模型II．
DOI：
10.1143/jpsj.80.054703
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
and R. Blinc
中科院分区：
文献类型：
--
作者：
Y. Ishibashi;M. Iwata;and R. Blinc
本文在先前提出的KH_2PO_4型晶体的八赝自旋模型的基础上讨论了KDP和ADP晶体的相变。计算了沿铁电唯一轴沿着轴和垂直于铁电唯一轴的（B）轴的介电常数。
The phase transitions in ferroelectric KH2PO4(KDP) and antiferroelectric NH4H2PO4(ADP) crystals are discussed on the basis of the eight-pseudospin model of KH2PO4-type crystals previously proposed, where eight pseudospins represent protons on hydrogen bonds connecting PO4radicals in a unit cell. The dielectric susceptibilities along thec-axis, which is the unique ferroelectric axis, anda(b)-axis, which is perpendicular to the unique axis, are calculated.