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정규호,임현식,Hongwoo Seo,박재완,이전국,MinKyu Yang,Nambin Kim,Yongmin Kim 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.3
We have investigated the electrical transport in a Pt/Cr-doped SZO/SRO thin film, which is one of the candidate materials for a resistive RAM (RRAM), deposited by using pulsed laser deposition (PLD) as a function of temperature. A clear current switching between low-resistance ON and highresistance OFF states is observed. As the temperature is lowered, the ON-to-OFF current ratio is increased. A pulsed voltage with a frequency of 10 Hz 1 kHz is also applied to explore the nonvolatile memory properties, and the transient time is estimated. Stable switching characteristics are observed over the entire range of temperatures and frequencies. Interestingly, the ON-to-OFF current ratio decreases with increasing frequency.
정규호 한국비교정부학회 2008 한국비교정부학보 Vol.12 No.2
I argue that the National University Hospital has to take its responsibility as the third health care service center for leading other public health care corporations, as well as its responsibility for educating, researching, and serving as a health center, as it written on its act of incorporation. As its management system had changed from a state-owned enterprise system to a self-supporting accounting system of a special corporation, the National University Hospital has pursued more heavily upon the profitability without showing any difference with the private university hospitals, even though the National University Hospital is a state-owned and public health care corporation. Therefore, after I have specifically analyzed the correlation between public service and profitability in a National University Hospital, I present my ideas on how to assign the public health care responsibilities to the National University Hospital in the current situation of pursuing heavily on profitability I argue that the National University Hospital has to take its responsibility as the third health care service center for leading other public health care corporations, as well as its responsibility for educating, researching, and serving as a health center, as it written on its act of incorporation. As its management system had changed from a state-owned enterprise system to a self-supporting accounting system of a special corporation, the National University Hospital has pursued more heavily upon the profitability without showing any difference with the private university hospitals, even though the National University Hospital is a state-owned and public health care corporation. Therefore, after I have specifically analyzed the correlation between public service and profitability in a National University Hospital, I present my ideas on how to assign the public health care responsibilities to the National University Hospital in the current situation of pursuing heavily on profitability
플라즈마 포커스를 이용한 크롬 산화물 박막 성장의 분위기 기체 압력 의존성 연구
정규호,이재갑,임현식,이전국,Jung, Kyoo-Ho,Lee, Jae-Kap,Im, Hyun-Sik,Karpinski, L.,Scholz, M.,Lee, Jeon-Kook 한국재료학회 2007 한국재료학회지 Vol.17 No.6
Chromium oxide thin films have been deposited on silicon substrates using a tabletop 9kJ mathertyped plasma focus (PF) device. Before deposition, pinch behavior with gas pressure was observed. Strength of pinches was increased with increasing working pressure. Deposition was performed at room temperature as a function of working pressure between 50 and 1000 mTorr. Composition and surface morphology of the films were analyzed by Auger Electron Spectroscopy and Scanning Electron Microscope, respectively. Growth rates of the films were decreased with pressure. The oxide films were polycrystalline containing some impurities, Cu, Fe, C and revealed finer grain structure at lower pressure.