著者
Morimoto Setsu Ito Atsuko
出版者
お茶の水女子大学
雑誌
お茶の水女子大學自然科學報告 (ISSN:00298190)
巻号頁・発行日
vol.30, no.1, pp.29-36, 1979-07

The unknown stress in KFeF_3 crystal which was glued to an acrylic plastic plate and cooled below the Neel temperature T_N was calibrated by applying known pressure. The pressure partly cancelled the stress causing the increase of T_N. It was observed that the pressure of 1.7±0.2kbar decreased T_N by 3.7±1.0K. From this result it was estimated that in the stressed crystal, labeled "S-(111)-fixed", previously examined, the stress of about 2.5kbar perpendicular to the glued plane caused the increase of T_N by 5K. Pressure dependences of hyperfine field H_<hf> and e^2qQ/2 at 77K were also obtained.