Orthorhombic-phase Mn-doped niobium tantalum antimonate potassium sodium lithium lead-free piezoelectric single crystal with super-high piezoelectric property and preparation method thereof

Abstract

The invention relates to an orthorhombic-phase Mn-doped lithium sodium potassium tantalum antimony niobate lead-free piezoelectric single crystal with super-high piezoelectric property and a preparation method thereof, belongs to the field of functional single crystal materials and preparation technology researches thereof, particularly relates to a perovskite-structured sodium potassium tantalum niobate-based leaf-free piezoelectric single crystal and a preparation method thereof, and aims to solve the problems that a current single crystal complex in components is hard in growth, low in quality and low in piezoelectric property. The chemical formula of the orthorhombic-phase Mn-doped lithium sodium potassium tantalum antimony niobate lead-free piezoelectric single crystal with super-high piezoelectric property is [(NayK1-y)1-xLix](Nb1-zTazSbt)O3:Mn. The preparation method includes the steps of firstly, preparing raw materials; secondly, mixing the raw materials; thirdly, pre-sintering; fourthly, performing second pre-sintering; fifthly, repeatedly melting and pre-sintering the perovskite-structured polycrystalline materials; sixthly, growing the crystal.

Description

technical field [0001] The invention belongs to the research field of functional single crystal materials and preparation technology thereof, and specifically relates to a perovskite structure potassium sodium niobate tantalate-based lead-free piezoelectric single crystal and a preparation method thereof. Background technique [0002] Piezoelectric materials can realize mutual conversion between mechanical energy and electrical energy. They are a very important class of functional materials and are widely used in daily life. The most widely used piezoelectric materials are still lead-based materials. As we all know, lead-containing materials are easy to volatilize in the process of production and use, which is not conducive to environmental protection and human health. Therefore, exploring a lead-free piezoelectric material that has good piezoelectric performance and can replace lead-based materials is a research hotspot in the field of functional materials. (K,Na)NbO 3 L...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an orthorhombic phase Mn-doped niobium tantalum antimonate potassium sodium lithium antimonate with ultra-high voltage performance fo

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