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Sm-modified lead magnesium niobate-lead titanate-based piezoelectric and ferroelectric thick film material and preparation method thereof

A technology of lead magnesium niobate and lead titanate, which is applied in the field of ferroelectric functional materials, can solve the problems of low yield, complicated process, and easy breakage, and achieve the effects of low cost, simple preparation process, and high production efficiency

Pending Publication Date: 2019-10-18
GUANGDONG JC TECHNOLOGICAL INNOVATION ELECTRONICS CO LTD +1
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Problems solved by technology

Most of the current thick-film material devices are obtained from ceramics through thinning technology, and the thinnest thickness that can be achieved is about 100 μm, but it is easy to break during the grinding and polishing process, the yield is low, the lower limit of thickness is limited, and the process is complicated ,high cost

Method used

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  • Sm-modified lead magnesium niobate-lead titanate-based piezoelectric and ferroelectric thick film material and preparation method thereof
  • Sm-modified lead magnesium niobate-lead titanate-based piezoelectric and ferroelectric thick film material and preparation method thereof
  • Sm-modified lead magnesium niobate-lead titanate-based piezoelectric and ferroelectric thick film material and preparation method thereof

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Embodiment Construction

[0033]The technical solutions in the embodiments of the present invention will be described clearly and completely below, obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] The invention discloses a preparation method of a Sm modified lead magnesium niobate-lead titanate based piezoelectric ferroelectric thick film material, comprising the following steps:

[0035] S1. Ingredients: Weigh the raw materials MgO and Nb according to the stoichiometric ratio 2 o 5 , PbO, TiO 2 and Sm 2 o 3 , and fully dried in the oven for 18 hours before use;

[0036] S2, first MgO and Nb 2 o 5 Dosing at a molar ratio of 1:1, reacting at 1200°C to synthesize pure phase MgNb 2 o 6 precursor, then M...

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Abstract

The invention belongs to the technical field of ferroelectric and piezoelectric functional materials, and discloses a Sm-modified lead magnesium niobate-lead titanate-based piezoelectric and ferroelectric thick film material. The molecular formula of the Sm-modified lead magnesium niobate-lead titanate-based piezoelectric and ferroelectric thick film material is [Sm<x>-Pb<(1-1.5x)>][(Mg<1 / 3>Nb<2 / 3>)<(1-Y)>Ti<y>]O3, wherein 0<X<=0.1,0.25<Y<=0.32, the preparation method comprises the steps that S1, raw materials areweighed according to stoichiometric ratio; S2, a two-step solid-phase reaction method is adopted to prepare and obtain Sm-modified lead magnesium niobite-lead titanate powder body ofperovskite phase; S3, the powder body is mixed with a dispersing agent and a binder to obtain a slurry; S4,the slurry is subjected to tape casting, drying, cutting, and lamination to obtain a green tape in a desired shape; S5, the green tape is adhered and sintered to obtain the piezoelectric and ferroelectric thick film material. Thepiezoelectric and ferroelectric thick film material is of a perovskite phase structure, microstructure is compact, piezoelectric performanceis excellent, sinteringcan be conducted at a low temperature, preparation technology is simple, the cost is low, industrial production is advantageous, and the piezoelectric and ferroelectric thick film material is expected to be used for piezoelectric ultrasonic transducer and high frequency piezoelectric ultrasonic transducer arrays, piezoelectric actuators, and sensors.

Description

technical field [0001] The invention relates to the technical field of ferroelectric piezoelectric functional materials, in particular to a Sm modified lead magnesium niobate-lead titanate based piezoelectric ferroelectric thick film material and a preparation method thereof. Background technique [0002] As an extremely important functional material in today's society, ferroelectric materials not only show great application potential in the field of information storage because of their two polar states, but also because they can output electrical signals under stress, Conversely, it can also generate strain under the drive of voltage, and is widely used as the core material of piezoelectric sensors, actuators, transducers and other devices. fields are widely used. [0003] (1-x)Pb(Mg 1 / 3 Nb 2 / 3 )O 3 -xPbTiO 3 (PMN-PT) relaxed piezoelectric single crystal has ultra-high piezoelectric response, piezoelectric coefficient d 33 Up to 2800pC / N. PMN-PT is near the quasi-iso...

Claims

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Application Information

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IPC IPC(8): C04B35/499C04B35/50C04B35/622C04B35/634C04B35/636
CPCC04B35/499C04B35/50C04B35/62218C04B35/63424C04B35/6365C04B2235/95C04B2235/786C04B2235/96C04B2235/3206
Inventor 姜知水文理任巍郑坤庄建董进杰
Owner GUANGDONG JC TECHNOLOGICAL INNOVATION ELECTRONICS CO LTD
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