
Paul-Jacques Curie was a French physicist and professor of mineralogy at the University of Montpellier. Along with his younger brother, Pierre Curie, he studied pyroelectricity in the 1880s, leading to their discovery of the piezoelectricity activity of crystalline structures under deformation in 1880.
Some of the crystalline structures under investigation were quartz, tourmaline, and Rochelle salt.
Paul-Jacques Curie (29 October 1855 – 19 February 1941)