METHOD OF PRODUCING MODIFIED ANTIMONY SULPHONIODIDE Russian patent published in 2024 - IPC H10N30/85 C30B7/14 C30B29/12 C30B29/46 C01B17/20 C01B9/06 C01G19/04 C01G30/00 

FIELD: chemical industry.

SUBSTANCE: invention can be used in making ultrasonic transducers, sensors, detectors, as well as hydroacoustic transmitters operating in receiving mode. First, weighed portions of components are prepared in stoichiometric ratios: antimony oxide Sb₂O₃, sodium sulphide Na₂S, potassium iodide KI and tin (II) chloride SnCl₂. Then prepared weighed portions are dissolved in hydrochloric acid and end product is synthesized at temperature from 45 to 85 °C by exchange interaction of said components in hydrochloric acid solution with subsequent stirring on a magnetic mixer. Synthesis time ranges from 0.75 to 2 hours. Synthesis product is successively washed with hydrochloric acid, distilled water and acetone and dried in air. Obtained piezoelectric material has a composition according to formula Sb_1−xSn_xSI_1−x, where 0.03≤x≤0.1, filamentary crystal structure and high anisotropy of piezoelectric parameters.

EFFECT: invention increases Curie temperature of the obtained piezoelectric material, simplifies the method of producing said material, as well as increases efficiency due to synthesis in solution without using complex hardware.

3 cl, 1 dwg, 2 tbl