| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Effect of Fe3O4 Nanoparticle Orientation on the Magnetic Properties of Polymer Composite Thin Films |
| 초록 |
We investigated the effect of Fe3O4 nanoparticle (NP) orientation on magnetic properties of polymer nanocomposite thin films. In order to obtain the NP-oriented composite multilayer, we applied Langmuir-Blodgett (LB) technique and performed the alternative deposition of spin-coated PMMA thin films and closely packed NP monolayers. Neutron reflectivity experiments were conducted to investigate the structure along film depth of the polymer-Fe3O4 NP multilayer. From the magnetic property results of the polymer nanocomposite thin film using SQUID, we can conclude that dipole-dipole interaction between NPs was significantly affected by particle orientation. Without the particle orientation, for example, spin-coated polymer-Fe3O4 NP composite thin films with homogeneous particle distribution, zero remanent magnetization and coercivity were exhibited due to isolation of the NPs and the reduction of the interparticle interactions. |
| 저자 |
윤경환1, 방준하2, 유태경3, 서병진4, 윤성원4, 김기연5, 김혜리5, 구자승5
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| 소속 |
1LG화학, 2고려대, 3경희대, 4가톨릭대, 5한국원자력(연) |
| 키워드 |
Fe3O4 nanoparticle; Dipolar interaction; Neutron reflectivity
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| E-Mail |
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