化学成分诱导的掺杂 Sm 的 (1 - x)Pb(Ni1/3Nb2/3)O3-xPbTiO3 结构、畴和电学特性的演变。

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Dalton Transactions Pub Date : 2024-06-26 DOI:10.1039/d4dt01398k

Haoran Yu, Jian Guo, Jiajia Wang, Ji Zhang, Shan-Tao Zhang

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引用次数: 0

摘要

Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT)和 Pb(Ni1/3Nb2/3)O3-PbTiO3 (PNN-PT)是弛豫体-PbTiO3家族中两种典型的基本二元固溶体，已被广泛研究，而 Pb(Ni1/3Nb2/3)O3-PbTiO3 (PNN-PT)则尚未被研究。本文制备了掺杂 1.5 mol% Sm 的（1 - x）Pb(Ni1/3Nb2/3)O3-xPbTiO3，即（1 - x）PNN-xPT:0.015Sm，x = 0.33-0.39，并系统地研究了化学成分诱导的晶体结构、畴和电性能演变。随着 PT 含量的增加，观察到了斜方四面体结构的演变。在 x = 0.36-0.37 附近出现了斜方体-四方体各向异性相界，在室温下显示出峰值压电特性，压电常数 d33 = 531 pC N-1，平面机电耦合因子 kp = 0.37。同时，x = 0.36 成分显示出更好的铁电行为，其剩磁极化 Pr = 13.4 μC cm-2 和矫顽力场 Ec = 3.2 kV cm-1。有趣的是，与 PMN-PT 不同，(1-x)PNN-xPT:0.015Sm 在室温和居里温度之间没有温度驱动的相变。这些参数表明，PNN-PT 系统值得更多关注，是进一步开发高性能压电/铁电材料的理想平台。

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Chemical composition-induced evolution of the structure, domain and electrical properties of Sm-doped (1 - x)Pb(Ni_1/3Nb_2/3)O₃-xPbTiO₃.

As the two typical basic binary solid solutions of the relaxor-PbTiO₃ family, Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PMN-PT) has been widely investigated, whereas Pb(Ni_1/3Nb_2/3)O₃-PbTiO₃ (PNN-PT) has not. Here, 1.5 mol% Sm-doped (1 - x)Pb(Ni_1/3Nb_2/3)O₃-xPbTiO₃, (1 - x)PNN-xPT:0.015Sm with x = 0.33-0.39, ceramics have been prepared and the chemical composition-induced evolution of crystal structure, domain, and electrical properties investigated systematically. With increasing PT content, evolution of the rhombohedral-tetragonal structure was observed. A rhombohedral-tetragonal morphotropic phase boundary occurred around x = 0.36-0.37, which showed a peak piezoelectric property with piezoelectric constant d₃₃ = 531 pC N^-1 and planar electromechanical coupling factor k_p = 0.37 at room temperature. At the same time, the x = 0.36 composition showed improved ferroelectric behavior with remanent polarization P_r = 13.4 μC cm^-2 and coercive field E_c = 3.2 kV cm^-1. Interestingly, different from its PMN-PT counterpart, there is no temperature-driven phase transition between room temperature and the Curie temperature for (1 - x)PNN-xPT:0.015Sm. These parameters indicated that the PNN-PT system is worthy of more attention and is a promising platform for further development of high-performance piezo/ferroelectric materials.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.