A piezoelectric sensor includes a ceramic material that has the formula of [Bi2O2][Am−1BmO3m+1], where m=2, A is mono-, di-, or tri-valent ions or a combination of them, B is transition element such as Fe3+, Ti4+, Nb5+, Ta5+, W6+, Mo6+ or a combination of them. The ceramics have high Curie temperature of 900˜940° C. The sensors claimed in the present invention utilize [Bi2O2][Am−1BmO3m+1] ceramics parts as sensing elements in various shapes and dimensions and can be used to sense force, acceleration, and pressure at very high temperatures of 600˜800° C.