| 학회 | 한국공업화학회 |
| 학술대회 | 2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 | 25권 1호 |
| 발표분야 | 포스터-환경·에너지 |
| 제목 | Investigation of oxidation-dependent surface charge effect on self-polarization and self-biased magentoelectric effect in the laminate films of PVDF/CoFe2O4/Ni |
| 초록 | Polymer-based magnetoelectric (ME) films having low price, flexibility, and biocompatibility have been actively studied due to their potential for bio-applications. Poly(vinylidene fluoride) (PVDF) and its copolymer were used for ME films because of good piezoelectric responses proportional to ME responses. In particular, the improvement of β-phase which can induce spontaneous polarization were considered for ideal ME films. However, a poling process to align β-phase by applying high electric field still needed to produce ME response. In this study, PVDF/CoFe2O4/Ni ME laminate films with self-polarization and self-bias ME effect were obtained by sol-gel and bar-casting. First, CoFe2O4 were coated on the Ni by sol-gel with calcination. Then, PVDF/CoFe2O4/Ni ME laminate films were prepared by casting PVDF through bar-casting. Our ME films had not only self-aligned β-phase from electrostatic interaction at interfacial regions but also self-bias effect from CoFe2O4/Ni. |
| 저자 | 노병일, 양수철 |
| 소속 | 동아대 |
| 키워드 | piezoelectric; magnetostrictive; magnetoelectric; self-alignment; self-bias ME effect |
