A BNT-based lead-free electrostrictive material with luminescent properties and its preparation method

A technology of electrostrictive materials and luminescent properties, applied in the directions of luminescent materials, chemical instruments and methods, etc., to achieve the effects of simple production process, excellent luminescent properties, and excellent fatigue resistance characteristics

Active Publication Date: 2017-09-29
LIAOCHENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many ferroelectric and piezoelectric materials with luminescence characteristics have been developed, researchers are currently paying more attention to the dual characteristics of piezoelectric and luminescence of ferroelectric materials, and for materials with both luminescence characteristics and excellent electrostrictive effect Multifunctional ferroelectric materials have not yet been reported

Method used

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  • A BNT-based lead-free electrostrictive material with luminescent properties and its preparation method
  • A BNT-based lead-free electrostrictive material with luminescent properties and its preparation method
  • A BNT-based lead-free electrostrictive material with luminescent properties and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The preparation chemical general formula is (1-x) (Bi 0.5 Na 0.5 )TiO 3 The BNT-based lead-free luminescent electrostrictive material of -xM-yR, wherein, M=(Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 , R=Er, x=0.08, y=0.002, 0.004, 0.006, 0.008, 0.010.

[0072] By Bi 2 o 3 、Na 2 CO 3 、TiO 2 、BaCO 3 , CaCO 3 , SnO 2 and Er 2 o 3 (analytical pure) is raw material, by 0.92 (Bi 0.5 Na 0.5 )TiO 3 -0.08 (Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 - The stoichiometric ratio (molar ratio) of Bi, Na, Ti, Ba, Ca, Sn and Er in yEr (y=0.002, 0.004, 0.006, 0.008, 0.010) Weigh the raw materials, use absolute ethanol as the medium and use ZrO 2 The balls are milled in a ball mill jar for 24 hours, wherein, the ball milling speed is 150-200 rpm, the mass ratio of the added zirconia balls to the ball abrasive is 1.5:1, and the mass ratio of the added anhydrous ethanol to the ball mill is 2.0:1. Then, dry, press into blocks and place in a closed Al 2 o 3 Crucible, pre...

Embodiment 2

[0077] The preparation chemical general formula is (1-x) (Bi 0.5 Na 0.5 )TiO 3 The BNT-based lead-free luminescent electrostrictive material of -xM-yR, wherein, M=(Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 , R=Pr, x=0.08, y=0.002, 0.004, 0.006, 0.008, 0.010.

[0078] By Bi 2 o 3 、Na 2 CO 3 、TiO 2 、BaCO 3 , CaCO 3 , SnO 2 and Pr 6 o 11 (analytical pure) is raw material, by 0.92 (Bi 0.5 Na 0.5 )TiO 3 -0.08 (Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 - The stoichiometric ratio (molar ratio) of Bi, Na, Ti, Ba, Ca, Sn and Pr in yPr (y=0.002, 0.004, 0.006, 0.008, 0.010) Weigh the raw materials, use absolute ethanol as the medium and use ZrO 2 The balls are milled in a ball mill jar for 24 hours, wherein, the ball milling speed is 150-200 rpm, the mass ratio of the added zirconia balls to the ball abrasive is 1.5:1, and the mass ratio of the added anhydrous ethanol to the ball mill is 2.0:1. Then, dry, press into blocks and place in a closed Al 2 o 3 Crucible, pr...

Embodiment 3

[0081] The preparation chemical general formula is (1-x) (Bi 0.5 Na 0.5 )TiO 3 - The BNT-based lead-free luminescent electrostrictive material of xM-yR, wherein, M=BaTiO 3, R=Er, x=0.07, y=0.002, 0.004, 0.006, 0.008, 0.010.

[0082] By Bi 2 o 3 、Na 2 CO 3 、TiO 2 、BaCO 3 and Er 2 o 3 (analytical pure) is raw material, by 0.92 (Bi 0.5 Na 0.5 )TiO 3 -0.07BaTiO 3 - The stoichiometric ratio (molar ratio) of Bi, Na, Ti, Ba and Er in yEr (y=0.002, 0.004, 0.006, 0.008, 0.010) Weigh the raw materials, use absolute ethanol as the medium and use ZrO 2 The balls are milled in a ball mill jar for 24 hours, wherein, the ball milling speed is 150-200 rpm, the mass ratio of the added zirconia balls to the ball abrasive is 1.5:1, and the mass ratio of the added anhydrous ethanol to the ball mill is 2.0:1. Then, dry, press into blocks and place in a closed Al 2 o 3 Crucible, pre-fired at 850 ° C for 4 h, and then put the pre-fired powder back into the ball mill jar, using abso...

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Abstract

The invention belongs to the field of photoelectric functional materials, and provides a BNT-base lead-free electrostriction material with light-emitting characteristic. The chemical composition conforms to the chemical general formula (1-x)(Bi0.5Na0.5)TiO[3]-xM-yR, wherein M is selected from BaTiO3 or (Ba0.90Ca0.10)(Ti0.92Sn0.08)O3, R is selected from one of Pr, Sm, Eu, Tb, Gd, Dy, Er, Ho or Tm, 0.06<= x <=0.09, and 0.001<= y <=0.01. The invention also provides a preparation method and application of the BNT-base lead-free electrostriction material with light-emitting characteristic. The material has the photoluminescent characteristic and excellent zero-lag electrostriction property, and is hopeful to be applied to the technical fields of photoelectric integration, micro electromechanical systems, photoelectric sensing and LEDs (light-emitting diodes).

Description

technical field [0001] The invention belongs to the field of photoelectric functional materials, and relates to an electrostrictive material and a preparation method, in particular to a rare earth-doped BNT-based lead-free electrostrictive material with photoluminescence characteristics and a preparation method. Background technique [0002] Electrostrictive materials are a kind of ferroelectric materials with diffusion phase transition characteristics. Compared with magnetostrictive materials and piezoelectric materials, they have the characteristics of fast response time, no hysteresis, no aging effect, and no need for polarization. The so-called electrostrictive effect refers to the phenomenon of stretching and deformation caused by an electric field, which is a physical phenomenon that occurs when a solid medium is polarized under the action of an external electric field. The electrostrictive strain S (ΔL / L) is proportional to the square of the electrostrictive coefficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/475C04B35/622C09K11/74
Inventor 郝继功徐志军初瑞清李伟付鹏
Owner LIAOCHENG UNIV
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