Plyushch Artyom, Mačiulis Nerijus, Sokal Aliaksei, Grigalaitis Robertas, Macutkevič Jan, Kudlash Alexander, Apanasevich Natalia, Lapko Konstantin, Selskis Algirdas, Maksimenko Sergey A, Kuzhir Polina, Banys Juras
Faculty of Physics, Vilnius University, Sauletekio 9, LT-10222 Vilnius, Lithuania.
Institute for Nuclear Problems, Belarusian State University, 220006 Minsk, Belarus.
Materials (Basel). 2021 Sep 4;14(17):5065. doi: 10.3390/ma14175065.
Composite materials with 83 wt.% of the 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 distributed in phosphate-bonded ceramics were prepared at three different pressures. A phosphate matrix comprises a mixture of an aluminum phosphate binder and melted periclase, MgO. All samples demonstrate a homogeneous distribution of the ferroelectric perovskite phase and are thermally stable up to 900 K. At higher temperatures, the pyrochlore cubic phase forms. It has been found that the density of the composites non-monotonously depends on the pressure. The dielectric permittivity and losses substantially increase with the density of the samples. The fabricated composites demonstrate diffused ferroelectric-paraelectric transition and prominent piezoelectric properties.
制备了三种不同压力下含83 wt.%的0.7Pb(Mg1/3Nb2/3)O3 - 0.3PbTiO3分布于磷酸盐结合陶瓷中的复合材料。磷酸盐基体由磷酸铝粘结剂和熔融方镁石MgO的混合物组成。所有样品均显示出铁电钙钛矿相的均匀分布，并且在高达900 K的温度下热稳定。在更高温度下，形成焦绿石立方相。已发现复合材料的密度非单调地取决于压力。介电常数和损耗随样品密度大幅增加。所制备的复合材料表现出弥散型铁电 - 顺电转变和显著的压电性能。
