Macroscopic Room-Temperature Magnetoelectricity in Piezoelectric (Core)–Ferrimagnetic (Shell) Nanocomposites
2024 · ACS Nano
저자
Junsok Choi, 남기태 (Ki Tae Nam), Eun‐Ho Sohn, Yongsok Seo
연구주제
Dielectric materials and actuators · Vibration Control and Rheological Fluids
NTIS 과학기술표준분류
에너지/자원만에너지·환경·원자력 확장
가장 가까운 분류(화학 > 고분자화학 > 에너지 고분자)가 에너지·환경·원자력 확장 범위 밖이다.
AI 연구 키워드·방법
core shell nanocomposite magnetoelectric nanocomposite piezoelectric polymer
키워드 (OpenAlex)
magnetoelectric effect core-shell nanocomposites Fe3O4 nanoparticles polyvinylidene fluoride magnetorheological fluid nanoparticle aggregation
초록
The magnetoelectric (ME) effect, which involves the interaction of magnetic and electric fields within a material, has a significant potential for various applications. Our study addresses the limitations of conventional magnetostriction-based ME materials by demonstrating an alternative approach that achieves substantial ME effects in core–shell-type nanocomposites at room temperature. By synthesizing ferrimagnetic Fe 3 O 4 nanoparticles onto piezoelectric poly(vinylidene fluoride) (PVDF) particles, we identified a distinct ME mechanism. In magnetorheological (MR) fluids, the magnetic-field-induced aggregation of Fe 3 O 4 nanoparticles, combined with the piezoelectricity of PVDF, leads to a pronounced ME effect, significantly enhancing the performance and stability of MR fluids. This research highlights a crucial observation of distinct ME effects, which could suggest potential pathways…
이 논문을 지원한 국가R&D 과제 (NTIS 성과)
| 연도 | 과제 | 부처 | 사업 | 수행기관 | NTIS 분류(1순위) |
|---|---|---|---|---|---|
| 2024 | IoT 디바이스용 화학소재 기술 | 과학기술정보통신부 | 한국화학연구원연구운영비지원(소부장회계) | 한국화학연구원 | – |
| 2024 | 압전성 불소계 공중합체 수지 제조 및 활용 기술 개발 | 산업통상자원부 | 소재부품기술개발 | (주)정석케미칼 | 범위 밖 |
인접 그래프
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