Multifunctional ferroelectric ceramic material and preparation method thereof

Abstract

The invention discloses a multifunctional ferroelectric ceramic material and a preparation method thereof. The material belongs to a lead-free ferroelectric ceramic material with an ABO3 perovskite structure, and the chemical formula of the material is (1-x)Na0.5Bi0.497Sm0.003TiO3-xCaTiO3, wherein x is greater than or equal to 0 and less than or equal to 0.08. The material can generate macroscopicorange-red light under the excitation of blue light with the wavelength of 480 nm, and has photoluminescence performance. The material has excellent photoluminescence thermal stability at a temperature of 20-200 DEG C, has the advantages of favorable water resistance at room temperature, simple technique, low production cost, greenness and environment friendliness, has favorable ferroelectric / piezoelectric properties, can replace lead-based ceramics which are harmful to the ecological environment and widely used in the market, and has wide application prospects in the fields of photoelectricmultifunctional materials and devices.

Description

technical field [0001] The invention belongs to the technical field of ferroelectric material preparation, and in particular relates to a multifunctional ferroelectric ceramic material and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's awareness of global environmental protection and the proposal of sustainable development strategies, lead-free piezoelectric ceramics are environmentally friendly, have good thermal and chemical stability, excellent mechanical properties and unique multi-functional characteristics. And become the focus of people's attention. Therefore, it is imminent to find new lead-free ferroelectric materials to replace lead-based ceramic materials that are harmful to human health and the ecological environment. [0003] belongs to ABO 3 Na, one of the perovskite family materials 0.5 Bi 0.5 TiO 3 (NBT) has a large remnant polarization at room temperature ( P r ~38 μC / cm 2 ), higher Curie...

AI Technical Summary

Problems solved by technology

At present, there are very few fluorescent-ferroelectric species with high fluorescent thermal stability, which largely limits the practical application of ferroelectric materials.

In addition, due to the hydrolysis reaction of some luminescent materials reported in previous studies, their luminescence intensity significantly decays with the prolongation of immersion in water, which severely limits their application in water environments.

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