Lead indium niobate—An antiferroelectric phase
Lead indium niobate—An antiferroelectric phase
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铌酸铅铟——反铁电相
DOI：
10.1080/01411598608221633
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发表时间：
1986
影响因子：
1.6
通讯作者：
P. Groves
中科院分区：
文献类型：
--
作者：
P. Groves
本文报道了一种新相铌铟酸铅（PbIn_（1/2）Nb_（1/2）O_3）。该晶体在室温下属于正交晶系，空间群为Pbam（D9 2 B）。在140 ± 5°C下发生向立方系统（空间群Pm 3 m（Ol h））的位移相变。以钙钛矿亚电池为例，室温下的晶格参数为：α p = bp = 4.112A，α p = 4.072A，γp = 89.81°，高于转变点α p = 4.108A。低温相被发现是同构的锆酸铅（PbZrO 3）。测量介电常数随温度的变化，以及测量转变温度随外加直流电场的变化，表明铟酸铅的这一相是反铁电的。
Abstract A new phase of lead indium niobate (PbIn1/2Nb1/2O3) is described. The crystal system can be considered as orthorhombic at room temperature with space group Pbam (D9 2 b). A displacive phase transition to the cubic system (space group Pm3m(Ol h)) occurs at 140 ± 5°C. Referred to the perovskite subcell the lattice parameters at room temperature are ap = bp = 4.112 A, cp = 4.072 A and γp = 89.81°; above the transition ap = 4.108 A. The low-temperature phase is found to be isostructural with lead zirconate (PbZrO3). Measurement of dielectric constant with temperature, and measurement of the shift in the transition temperature with applied d.c. field show this phase of lead indium niobate to be antiferroelectric.