Metal silicide and germanide 1D nanostructures: synthesis, characterization, and applications = 규화 금속 및 게르마늄화 금속 1 차원 나노구조: 합성, 특성 분석, 및 응용성 연구

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There are a great number of opportunities for various applications by fabricating new types of nanostructures, or simply by down-sizing existing microstructures into the nanoscale. In particular, among the various nanostructures in existence, one dimensional (1D) nanostructures, such as nanowires (NWs), nanobelts, and nanotubes (NTs), have unique electronic, optical, and mechanical properties as a result of their dimensional anisotropy and the quantum confinement effect. Metal silicides and germanides are among the best candidates for a potentially new class of nanomaterials because they have diverse electrical and magnetic properties as well as they are compatible with existing complementary metal-oxide-semiconductor (CMOS) technologies. Thus, metal silicide and germanide 1D nanostructures can be very usefully employed to build future nanoelectronic and nanospintronic devices. In this dissertation, we present the synthesis, characterization, and applications of various metal silicide and germanide NWs. First, synthetic approaches and applications of various metal silicide and germanide 1D nanostructures have been reviewed. Second, we report the synthesis of MnSi NWs and measurements of their electrical and magnetic properties. Third, synthesis and morphology control of Co5Ge7 1D nanostructures are investigated. Field emission (FE) properties of vertical Co5Ge7 NW arrays are also reported. Fourth, we report the results of both experimental and theoretical studies on the ferromagnetic stabilization of freestanding hexagonal Fe1.3Ge NWs and their origin. Fifth, vertical growth of Fe1.3Ge NW arrays on few-layer graphene and their FE properties are studied. Finally, self-aligned growth of in-plane and out-of-plane monoclinic CoGe NWs and their electrical properties are investigated. The abstracts for each chapter are as follows.
Advisors
Kim, Bong-Sooresearcher김봉수
Description
한국과학기술원 : 화학과,
Publisher
한국과학기술원
Issue Date
2011
Identifier
567302/325007  / 020075118
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 화학과, 2011., [ xvi, 185 p. ]

Keywords

Nanowire; 강자성; 에피택셜 성장; 게르마늄화 금속; 규화 금속; 나노선; Silicide; Germanide; Epitaxial Growth; Ferromagnetic

URI
http://hdl.handle.net/10203/196447
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=567302&flag=dissertation
Appears in Collection
CH-Theses_Ph.D.(박사논문)
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