Статья

Physicochemical, dielectric, and piezoelectric properties and conductivity of LiNbO3: ZnO crystals (4.02–8.91 mol %)

М. Н. ПалатниковTananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kolsky Scientific Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184200, RussiaВ. А. СандлерTananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kolsky Scientific Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184200, RussiaН. В. СидоровTananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kolsky Scientific Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184200, RussiaI. V. BiryukovaTananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kolsky Scientific Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184200, RussiaО. В. МакароваTananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kolsky Scientific Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184200, Russia

2017en

ABI

Аннотация

The physicochemical characteristics of the crystal–melt system during the growth of LiNbO3: ZnO crystals have been investigated in the range of impurity concentration [ZnO] in the melt of 4.02–8.91 mol %. The threshold impurity concentration corresponding to a significant change in the formation conditions and structure of LiNbO3: ZnO crystals is refined ([ZnO] = 6.76 mol % in the melt). The dielectric and piezoelectric properties and conductivity of multidomain LiNbO3: ZnO crystals have been analyzed. The occurrence of a significant spontaneous increase in the unipolarity upon high-temperature annealing has only been shown to be typical of LiNbO3: ZnO crystals grown from melts in the near-threshold concentration range (~5.4 < [ZnO] ≤ 6.76 mol % in the melt). This effect is accompanied by a large and reproducible increase in the static piezoelectric coefficient d 333. The value of the piezoelectric-coefficient jump Δd 333 linearly increases with an increase in the specific-conductivity jump Δσ near the temperature T* ≈ 800 K.

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Идентификаторы

DOI: 10.1134/s1063784217010170

Цитирования и источники

Цитирований: 2Использованных источников: 0

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