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  • 02월 22일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Electronic Structure and Magnetization of Ti1-xMnxO (0 ≤ x ≤0.1) Nanowires

등록일
2008년 2월 14일 10시 50분 30초
접수번호
1276
발표코드
29P8포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅰ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
지경환, 김한성1, 김창현1, 조용재1, 박정희1
고려대학교 신소재 화학과,
1고려대학교 소재화학과,
Diluted magnetic semiconductors have attracted a considerable amount of attention, because of their excellent potential as key materials for spintronic devices. The demonstration of the unique phenomena associated with DMSs such as the field-effect control of their ferromagnetism, efficient spin injection to produce circularly polarized light, and spin-dependent resonant tunneling, has opened up a vast new landscape for technological innovation in magnetoelectronics. Herein, high-density Ti1-xMnxO (0 ≤x ≤ 0.1) nanowires were synthesized by thermal vapor transport method. They consisted of single-crystalline rutile (tetragonal) TiO2nanocrystals. X-ray photoelectron spectroscopy revealed that as the Mn content increases, the binding energy of Ti 2p shifts to a higher energy, suggesting the possibility of hybridization between the Mn2+ ions and host defects. X-ray absorption spectroscopy and X-ray magnetic circular dichroism confirmed that the Mn2+ ions substitute into the coordinated sites. The magnetization measurement revealed that all of these nanowires exhibited room-temperature ferromagnetic behaviors.

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