| 학회 | 한국재료학회 |
| 학술대회 | 2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 | 23권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | V-shape Magnetoelectric Nanorod Arrays for High Power Density |
| 초록 | One-Dimensional electronic nanostructures such as wires, rods, belts and tubes have been highly focused due to promising characteristics given by high aspect ratio in nano scale. In recent, magnetoelectric materials as one of feasible candidates for energy harvesting require nanostructures to be used in potential applications of highly sensitive magnetic/electric sensors, actuators, transducers and energy harvester devices. In order to enhance power density (W/m2) from magentoelectric devices, high density of magnetoelectric nanostructures on a conductive substrate is required so that many research groups have tried to develop nanostructures via various growth methods with key parameters for high density. However, there is still a critical problem of aggregation between nanostructures which cause poor magnetoelectric power density under applied AC magnetic fields. In this study, we have developed V-shape nanorod arrays of barium titanate (BaTiO3¬) via growth, chemical etching and topochemical transformation in sequence. The lead-free piezoelectric BaTiO3 nanorods were found to exhibit effect of aspect ratio on piezoelectric characteristics, which directly influence magnetoelectric responses. Next, different compositions of ferrite oxide (ZnFe2O4 and MnFe2O4) for unique magnetoelectric characteristics were coated on V-shape BaTiO3¬ nanorods via sol-gel coating and pyrolysis methods. Finally, detail magnetoelectric responses of V-shape magnetoelectric nanorod structures were investigated in comparison with general magnetoelectric nonorods. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1C1B1010884) |
| 저자 | 양수철, 장선민, 최문혁 |
| 소속 | 동아대 |
| 키워드 | V-shape Nanorods; Magnetoelectric; High Power Density |
