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Property measurement of CaF$$_{2}$$

CaF$$_{2}$$の物性測定

土持 亮太; 加藤 正人   ; 廣岡 瞬 ; 松本 卓; White, J.*; McClellan, K.*

Tsuchimochi, Ryota; Kato, Masato; Hirooka, Shun; Matsumoto, Taku; White, J.*; McClellan, K.*

アクチニド酸化物と同様の結晶構造を持つCaF$$_{2}$$について、高温X線回折測定, 熱膨張率測定, 音速測定, 示差走査熱量測定を行った。CaF$$_{2}$$の比熱は、定積比熱, 熱膨張項に加えて、フレンケル欠陥の生成の影響も顕著に表れることが確認された。本報告では、これらの比熱の解析結果を実験データとあわせて報告する。

High temperature XRD, Thermal expansion measurement, sound speeds measurement and DSC measurement of CaF$$_{2}$$ were carried out. We confirmed that the specific heat of CaF$$_{2}$$ explicity shows the effect of Frenkel defect formation on top of the heat capacity at constant volume and dilatational term. The analysis of the specific heat will be discussed together with the measured data.

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