公开(公告)号：US20250081853A1

公开(公告)日：2025-03-06

申请号：US18819799

申请日：2024-08-29

Applicant: STMicroelectronics International N.V.

Inventor： Christian VERRENGIA CAPOROSSI ,  Annachiara ESPOSITO ,  Paola Sabrina BARBATO ,  Valeria CASUSCELLI ,  Rossana SCALDAFERRI

IPC: H10N30/85 ,  C08K3/22 ,  C09D5/24 ,  C09D7/40 ,  C09D7/61 ,  C09D127/16 ,  H04R17/02 ,  H10N30/092

Abstract: Composite material comprising a fluoropolymer matrix and a filler formed of nanoparticles of a ceramic of the BZT-αBXT type wherein X is selected from Ca, Sn, and Mn and a is a molar fraction selected in the range between 0.10-0.90 doped with at least one doping element selected from the group consisting of Nb, La, Mn, Nd and W, wherein when X is Mn, the doping element is not Mn, wherein said nanoparticles have an average diameter comprised between 10 and 25% by weight on the total weight of the composite. The composite material is used to form a thin film usable as a piezoelectric material with inductive properties in electronic components, for example acoustic sensors such as microphones, and energy harvesting transducers.