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Ternary piezoelectric ceramic as well as preparation method and application thereof
The invention relates to the technical field of piezoelectric ceramics, in particular to a ternary piezoelectric ceramic as well as a preparation method and application thereof. The chemical composition of the ternary piezoelectric ceramic provided by the invention is (1-x-y) BiFeO < 3-x > PbTiO < 3-y > Ba (HfmTi < 1-m >) O < 3-z > MnO < 2 >. By introducing the Hf ions, the piezoelectric property of the ternary piezoelectric ceramic can be greatly improved, and the Hf ions with larger ion radiuses replace titanium ions with smaller ion radiuses, so that the tetragonal distortion degree is reduced. Compared with manganese carbonate doping in the prior art, manganese oxide doping has higher volume density and resistivity, so that a manganese oxide doped sample has higher piezoelectric property.
本发明涉及压电陶瓷技术领域，尤其涉及一种三元压电陶瓷及其制备方法和应用。本发明提供的三元压电陶瓷的化学组成为：(1‑x‑y)BiFeO3‑xPbTiO3‑yBa(HfmTi1‑m)O3‑zMnO2。本发明通过引入Hf离子，可以大幅度提高三元压电陶瓷的压电性能，离子半径较大的Hf离子取代了离子半径较小的钛离子使得四方畸变度减小。氧化锰掺杂相较于现有技术的碳酸锰掺杂具有更高的体密度和电阻率，从而使的氧化锰掺杂的样品具有更高的压电性能。
Ternary piezoelectric ceramic as well as preparation method and application thereof
The invention relates to the technical field of piezoelectric ceramics, in particular to a ternary piezoelectric ceramic as well as a preparation method and application thereof. The chemical composition of the ternary piezoelectric ceramic provided by the invention is (1-x-y) BiFeO < 3-x > PbTiO < 3-y > Ba (HfmTi < 1-m >) O < 3-z > MnO < 2 >. By introducing the Hf ions, the piezoelectric property of the ternary piezoelectric ceramic can be greatly improved, and the Hf ions with larger ion radiuses replace titanium ions with smaller ion radiuses, so that the tetragonal distortion degree is reduced. Compared with manganese carbonate doping in the prior art, manganese oxide doping has higher volume density and resistivity, so that a manganese oxide doped sample has higher piezoelectric property.
本发明涉及压电陶瓷技术领域，尤其涉及一种三元压电陶瓷及其制备方法和应用。本发明提供的三元压电陶瓷的化学组成为：(1‑x‑y)BiFeO3‑xPbTiO3‑yBa(HfmTi1‑m)O3‑zMnO2。本发明通过引入Hf离子，可以大幅度提高三元压电陶瓷的压电性能，离子半径较大的Hf离子取代了离子半径较小的钛离子使得四方畸变度减小。氧化锰掺杂相较于现有技术的碳酸锰掺杂具有更高的体密度和电阻率，从而使的氧化锰掺杂的样品具有更高的压电性能。
Ternary piezoelectric ceramic as well as preparation method and application thereof
一种三元压电陶瓷及其制备方法和应用
CHEN JIANGUO (author) / SHEN XIN (author) / CHENG JINRONG (author) / TONG BINBIN (author)
2021-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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