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Development of Sample Environment at High Temperature for the four Circle Diffractometer at HANARO: Structural Study of $LiTaO_3$ at Room and High Temperatures  

김신애 (한국원자력연구소 하나로이용기술개발팀)
성기훈 (한국원자력연구소 하나로이용기술개발팀)
이창희 (한국원자력연구소 하나로이용기술개발팀)
Publication Information
Journal of the Mineralogical Society of Korea / v.15, no.2, 2002 , pp. 140-144 More about this Journal
Abstract
The sample environment at high temperature for the four circle diffractometer at HANARO in Korea Atomic Energy Research Institute is developed. The performance test was carried out for a structurally known sample through the high temperature experiment with this equipment. In this study we found out that the developed sample environment is stable for a long time experiment at over 900 K. By the neutron diffraction from a single crystal of $LiTaO_3$(phase transition temperature about 900 K) at 298 and 913 K, the lithium atomic positions at both temperatures and disordered state of lithium atom at high temperature were confirmed. These are hardly possible to determine by the conventional X-ray diffraction method.
Keywords
research reactor HANARO; neutron; four circle diffractometer; sample environment; $LiTaO_3$;
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