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

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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.