Thin film signal detection by magnetic resonance force microscopy자기공명 힘 현미경을 이용한 박막 신호 측정에 관한 연구

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dc.contributor.advisorLee, Soon-Chil-
dc.contributor.advisor이순칠-
dc.contributor.authorSaun, Seung-Bo-
dc.contributor.author손승보-
dc.date.accessioned2015-04-23T07:08:48Z-
dc.date.available2015-04-23T07:08:48Z-
dc.date.issued2014-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=591749&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/197220-
dc.description학위논문(박사) - 한국과학기술원 : 물리학과, 2014.8, [ ⅴ, 87p ]-
dc.description.abstractMagnetic resonance is developed in early 20s century and achieve good works in fields of physics, chem-istry, and biology, needless to say, in fields of medicine and biotechnology. And, this method revolutionized the practice of these fields by providing chemically selective, non-destructive, and locally probing means for the observation of matter from the atomic to the macroscopic scale. The one major weakness of NMR is the low detection sensitivity, which limits its application to bulk samples. Nowadays thin film samples are used in many areas. The bulk and thin film, even though they are composed of same materials, have different characteristics, and it needs to investigate the thin film samples for characterizing. However, except few specific cases, thin film NMR has never been detected by conventional NMR method because of its poor sensitivity. To overcome this shortage of magnetic resonance, Magnetic Resonance Force Microscopy (MRFM) was proposed. It is a com-bined technique of magnetic resonance and scanning probe microscopy(SPM). This technique increased the sensitivity of magnetic resonance extraordinarily. The aim of the works in this article is to investigate thin films by NMR using the high sensitivity of MRFM. For preliminary study, Electron Spin Resonance(ESR) signal from DPPH was observed and investigated at room temperature. Low temperature MRFM was developed for higher signal to noise ratio. In NMR studies, natural line width and spin lattice relaxation time($T_1$) are most important factors for characterizing condensed matter systems. By modifying the MRFM set up, The natural line width and spin lattice relaxation time($T_1$) of general thin film samples were obtained for the first time.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subject박막-
dc.subject외팔보-
dc.subjectcantilever-
dc.subjectMRFM-
dc.subjectNMR-
dc.subjectthin film-
dc.subject핵 자기 공명-
dc.subject자기 공명 힘 현미경-
dc.titleThin film signal detection by magnetic resonance force microscopy-
dc.title.alternative자기공명 힘 현미경을 이용한 박막 신호 측정에 관한 연구-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN591749/325007 -
dc.description.department한국과학기술원 : 물리학과, -
dc.identifier.uid020047275-
dc.contributor.localauthorLee, Soon-Chil-
dc.contributor.localauthor이순칠-
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PH-Theses_Ph.D.(박사논문)
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