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IPC

C04B35/495(2006-01-01)

H01L41/187(2006-01-01)

(21) (22)

Application

2013159320/03, 2013-12-30

(24)

Start date

2013-12-30

(22)

Actual filing date

2013-12-30

(45)

Published

2015-05-20

(72)

Inventor

Reznichenko Larisa AndreevnaTalanov Mikhail Valer'EvichShilkina Lidija AleksandrovnaVerbenko Il'Ja Aleksandrovich

(73)

Holder

Federal'Noe Gosudarstvennoe Avtonomnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Federal'Nyj Universitet"

PIEZOELECTRIC CERAMIC MATERIAL Russian patent published in 2015 - IPC C04B35/495 H01L41/187

Abstract RU 2551156 C1

FIELD: chemistry.

SUBSTANCE: piezoceramic material based on a solid solution system aNaNbO₃+bKNbO₃+cCuNb₂O₆ (a+b+c=100%) contains sodium, potassium, niobium and copper oxides, with the following ratio of components, wt %: Na₂O 13.87-14.87; K₂O 4.24-5.62; Nb₂O₅ 79.32-79.70; CuO 1.19. The material is characterised by high relative permittivity $(ε_{З З}^{T} / ε_{0} = 300),$ while maintaining a sufficiently high mechanical Q-factor (Q_m=1050) and piezoelectric properties. This is possible owing to formation, during sintering, of intermediate Cu-containing compounds with a low melting point, with which formation of liquid phases is associated, where said liquid phases enable to form an improved microcrystalline (granular) structure.

EFFECT: improved characteristics.

2 tbl

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RU 2 551 156 C1

Authors

Reznichenko Larisa Andreevna

Talanov Mikhail Valer'Evich

Shilkina Lidija Aleksandrovna

Verbenko Il'Ja Aleksandrovich

Dates

2015-05-20—Published

2013-12-30—Filed