Structural Distortion-Driven Enhancement of Ferroelectric Response in La-Modified Bismuth Titanate Layered CeramicsSumit Bhardwaj, Indu Sharma, Shalom Akhai and Rajni SharmaEPJ Web Conf., 356 (2026) 01029DOI: https://doi.org/10.1051/epjconf/202635601029