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Tb / Co 조성변조 다층박막의 자기 및 광자기적 성질에 관한 연구
홍석지(Suckji Hong),김상록(Sangrok Kim),이성래(Seong-Rae Lee) 한국자기학회 1996 韓國磁氣學會誌 Vol.6 No.3
The magnetic and magneto-optical properties of the Tb/Co multilayers as a function of the layer thickness and the ratio of Tb/Co thicknesses were studied. When the thickness of Th layer was 12Å, the maximum perpendicular anisotropy energy and the maximum thickness ratio which displays the perpendicular anisotropy were obtained. This result indicated that the Tb-Tb and Co-Co pairs as well as the Tb-Co pairs contribute to the perpendicular anisotropy. The Kerr rotation angle, θK was proportional to the perpendicular anisotropy energy and was inversely proportional to the average spin dispersion angle, α. The maximum θK of 0.28° was obtained in the film of 12Å Tb and the thickness ratio of 1.55. The abnormal hysteresis loops were appeared during the aging treatment because the coercivity difference between the Co layer and the Tb layer was increased by the preferential oxidation of Tb.
김미경(Mi Kyoung Kim),홍석지(Seok Ji Hong),신정호(Jung Ho Shin),서현덕(Hyun Deok Seo) 충북대학교 생활과학연구소 2015 생활과학연구논총 Vol.19 No.1
The purpose of this study was to analyze the current status and improvement of healing environment for children focused on the play therapy centers. A document research and field survey were used to analyze and classify the spatial characteristics of four play therapy centers in Seoul that were opened in 2005 or later. The results are as follows; (1) The play therapy room should be considered for secure of area and separation from management and service areas. (2) The types of storage furniture in play therapy room were verified in three aspects; the open type, closed type and mixed type. The open type is needed to be considered in planning with accessibility of children to educational materials, but the closed type can be applied in terms of creation of vibrant interior image. (3) Safety, diversity and environment -friendly interior finishing materials should be applied in planning of the play therapy room for children with developmental disabilities. (4) Interior walls of play therapy room can be covered with patterned, decorated and pastel-colored wallpapers not to be monotonous interior atmosphere. (5) Elements of natural landscape such as planting, waterfront space and interior landscaping should be considered in creating healing environment for children.