Phase Diagram and Phase Transitions in the Relaxor Ferroelectric Pb(Fe2/3W1/3)O3–PbTiO3 System
Phase Diagram and Phase Transitions in the Relaxor Ferroelectric Pb(Fe2/3W1/3)O3–PbTiO3 System
复制标题
张弛铁电 Pb(Fe2/3W1/3)O3–PbTiO3 体系中的相图和相变
DOI：
10.1006/jssc.2001.9433
复制
发表时间：
2002
影响因子：
5.4
通讯作者：
Z. Ye
中科院分区：
文献类型：
--
作者：
L. Feng;Z. Ye
摘要采用B位前驱体法合成了弛豫铁电体Pb（Fe 2/3 W1/3）O3（PFW）和铁电体PbTiO 3（PT）之间的完全固溶体（1− x）PFW-xPT），并通过X射线衍射、差示扫描量热和介电测量对其进行了表征。建立了PFW和PT之间的相图。PFW的扩散相变温度（T_（max）约为180 K）随Ti ~（4+）离子在B -位上含量的增加而不断升高。与此同时，PFW的弛豫铁电行为逐渐向正常铁电态转变，表现为当x ≥0.25时，在Tc附近出现了尖锐的非色散的介电常数峰。在室温下，随着x增加到0.25，发生从立方相到四方相的转变。准同型相界位于组成区间0.25≤ x ≤0.35内，其将假立方（菱面体）相与四方相分开。
Abstract A complete solid solution between relaxor ferroelectric Pb(Fe 2/3 W 1/3 )O 3 (PFW) and ferroelectric PbTiO 3 (PT), (1− x )PFW– x PT, was synthesized by a B -site precursor method and characterized by X-ray diffraction, differential scanning calorimetry, and dielectric measurements. A phase diagram between PFW and PT has been established. The diffuse phase transition temperature (T max ≈180 K) of PFW was found to continuously increase with the increasing amount of Ti 4+ ions on the B -site. At the same time, the relaxor ferroelectric behavior of PFW is gradually transformed toward a normal ferroelectric state, as evidenced by sharp and nondispersive peaks of dielectric permittivity around T C for x ≥0.25. At room temperature, a transition from a cubic to a tetragonal phase takes place with x increased up to 0.25. A morphotropic phase boundary is located within the composition interval 0.25≤ x ≤0.35, which separates a pseudocubic (rhombohedral) phase from a tetragonal phase.
DOI：
10.1143/jjap.21.1298
发表时间：
1982-01-01
期刊：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
影响因子：
--
作者：
KUWATA, J;UCHINO, K;NOMURA, S
通讯作者：
NOMURA, S
Pb(Mg1/3Nb2/3)O3 极性纳米结构对电场的响应
DOI：
--
发表时间：
2019
期刊：
影响因子：
--
作者：
山口 翔;佐藤幸生;寺西 亮;金子賢治;清水荘雄;谷口博基
通讯作者：
谷口博基