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An orthorhombic Mn-doped potassium niobium tantalum antimonate potassium sodium lithium lead-free piezoelectric single crystal with ultra-high piezoelectric performance and its preparation method

A technology of potassium, sodium, lithium, niobium, tantalum antimonate, and piezoelectric properties, which is applied in the field of functional single crystal materials and its preparation, can solve problems such as insufficient piezoelectric properties, low quality, and difficulty in single crystal growth, and achieve easy storage , uniform composition, no deliquescence effect

Active Publication Date: 2019-04-12
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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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 for the current problems of complex single crystal growth difficulties, low quality and insufficient piezoelectric performance. Lead-free piezoelectric single crystal and its preparation method

Method used

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  • An orthorhombic Mn-doped potassium niobium tantalum antimonate potassium sodium lithium lead-free piezoelectric single crystal with ultra-high piezoelectric performance and its preparation method
  • An orthorhombic Mn-doped potassium niobium tantalum antimonate potassium sodium lithium lead-free piezoelectric single crystal with ultra-high piezoelectric performance and its preparation method
  • An orthorhombic Mn-doped potassium niobium tantalum antimonate potassium sodium lithium lead-free piezoelectric single crystal with ultra-high piezoelectric performance and its preparation method

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specific Embodiment approach 1

[0029] Specific embodiment 1: The chemical formula of an orthorhombic Mn-doped potassium niobium tantalum antimonate potassium sodium lithium lead-free piezoelectric single crystal with ultra-high voltage performance is [(Na y K 1-y ) 1-x Li x ](Nb 1-z Ta z Sb t )O 3 : Mn, where, 0.01<x<0.05, 0.4<y<0.6, 0.25<z<0.35, 0.01<t<0.05.

specific Embodiment approach 2

[0030] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: the described [(Na y K 1-y ) 1- x Li x ](Nb 1-z Ta z Sb t )O 3 : Mn 0.01

specific Embodiment approach 3

[0031] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one or two is: the [(Na y K 1-y ) 1-x Li x ](Nb 1-z Ta z Sb t )O 3 : Mn 0.03

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/22C30B15/00
CPCC30B15/00C30B29/22
Inventor 郑立梅吕伟明杨丽雅刘博靖羽佳王军军王锐杨彬张锐曹文武
Owner HARBIN INST OF TECH
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