Melilith structure high temperature piezo electric crystal and preparation method thereof

The invention relates to a melilith structure high temperature piezo electric crystal and a preparation method thereof. The chemical formula of the piezo electric crystal is Ca2Al2SiO7, and a space group is shown in the description. The piezo electric crystal is a melilith structure. The high temper...

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Hauptverfasser:	SHI ERWEI, TU XIAONIU, XIONG KAINAN, ZHENG YANQING, JIANG BOHAN, CAO SHUOLIANG, LI YAQIAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The invention relates to a melilith structure high temperature piezo electric crystal and a preparation method thereof. The chemical formula of the piezo electric crystal is Ca2Al2SiO7, and a space group is shown in the description. The piezo electric crystal is a melilith structure. The high temperature piezo electric crystal has low cost, good crystallization, high resistivity, good thermal stability, no phase-change to a melting point, and high effective piezoelectric strain constant, and is suitable for high temperature piezoelectric transducer members. 本发明涉及种黄长石结构高温压电晶体及其制备方法，所述压电晶体的化学式为CaAlSiO，空间群P，所述压电晶体为黄长石结构。本发明的高温压电晶体兼具成本低廉，结晶性好，电阻率高，热稳定性好，至熔点前无相变，有效压电应变常数高的优点，适用于高温压电传感器件中。