METHOD OF PRODUCING GLASSCERAMIC PYROELECTRIC MATERIAL Russian patent published in 2010 - IPC C03C10/04 

FIELD: chemistry.

SUBSTANCE: invention relates to production of pyroelectric materials widely used in modern technology (devices for remote thermal control of production processes, thermal monitoring of the environment, electronic control of the mode of operation of internal combustion engines, fire alarms etc). The method of producing glassceramic pyroelectric material involves melting a mixture of the following composition in mol %: La₂O₃ 23-27, B₂O₃ 23-27, SiO₂ 15-35, GeO₂ 15-35. Glass is crystallised at 925-1000°C in a field with temperature gradient of 50-100°C/mm for 4-8 hours. The material has low dielectric loss (0.001) and high electrical resistance.

EFFECT: invention enables to obtain glassceramic pyroelectric material with high pyroelectric coefficient in the region of room temperature due to reduction of the ferroelectric phase transition temperature of LaBGeO₅.

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