A Mathematical and Simulation Study of Lanthanum-Modified PZT for Enhanced Serendipity Shaped Cantilever Piezoelectric Energy Harvester. Indian Journal of Pure & Applied Physics (IJPAP), [S. l.], v. 64, n. 2, 2026. DOI: 10.56042/ijpap.v64i2.25704. Disponível em: https://or.niscpr.res.in/index.php/IJPAP/article/view/25704. Acesso em: 13 may. 2026.