To discover new ceramic materials with oxygen-ion conductivity the Sr-Bi-Ni-O system was investigated. By solid-phase synthesis from nitrates two perovskite-like phases (Sr₃Bi_1,1Ni_0,9O_6±δ. and Sr₃Bi_0,6Ni_1,4O_6±δ) were synthesized and the optimal synthesis conditions were determined. Indicating of X-ray patterns of these compounds was carried out. It was determined that Sr₃Bi_1,1Ni_0,9O_6±δ was insulator at room temperature, Sr₃Bi_0,6Ni_1,4O_6±δ was conductor. The temperature dependence of specific resistance of Sr₃Bi_0,6Ni_1,4O_6±δ was defined. The processes of oxygen isolation and absorption of Sr₃Bi_0,6Ni_1,4O_6-δ during heating and cooling were investigated.

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