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PRAM 기록막용 Sb<sub>2</sub>Te<sub>3</sub> 박막의 질소 첨가에 대한 영향
배준현,차준호,김경호,김병근,이홍림,Bae, Jun-Hyun,Cha, Jun-Ho,Kim, Kyoung-Ho,Kim, Byung-Geun,Lee, Hong-Lim,Byeon, Dae-Seop 한국세라믹학회 2008 한국세라믹학회지 Vol.45 No.5
In this research, properties of $N_2$-doped $Sb_2Te_3$ thin film were evaluated using 4-point probe, XRD and AFM. $Sb_2Te_3$ material has faster crystallization rate than $Ge_2Sb_2Te_5$, but sheet resistance difference between amorphous and crystallization state is very low. This low sheet resistance difference decreases sensing margin in reading operation at PRAM device operation. Therefore, in order to overcome this weak point, $N_2$ gas was doped on $Sb_2Te_3$ thin film. Sheet resistance difference between amorphous and crystallized state of $N_2$-doped $Sb_2Te_3$ thin film showed about $10^4$ times higher than Un-doped $Sb_2Te_3$ thin film because of the grain boundary scattering.
배준현 ( Bae Jun-hyun ),배영훈 ( Bae Younghoon ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
The use of wood sleepers is on the decline due to their material and environmental disadvantages. Recently, the recycling of plastics and reuse as railway sleepers have become a social concern. In Europe and US, plastic sleepers have already been used, and some standards on plastic sleeper have been established. In this paper, performance requirements and test items of a plastic sleeper were described through the analysis of prEN 17318 series relevant to plastic sleeper.