2018年第79回応用物理学会秋季学術講演会

講演情報

一般セッション(口頭講演)

6 薄膜・表面 » 6.1 強誘電体薄膜

[19a-133-1~12] 6.1 強誘電体薄膜

2018年9月19日(水) 09:00 〜 12:15 133 (133+134)

安井 伸太郎(東工大)、中嶋 宇史(東理大)

09:30 〜 09:45

[19a-133-3] 反強誘電体PbZrO3薄膜の電気熱量効果

真岩 宏司1 (1.湘南工大工)

キーワード:反強誘電体、電気熱量効果

Temperature dependences of polarization hysteresis loops of PbZrO3 thin films fabricated chemical solution deposition were evaluated for applications of energy storage capacitor and the cooling refrigeration using electrocaloric effects. The maximum polarization did not change to 175℃ and decreased at 205℃. With increasing of temperature, the stored energy decreased in keeping pace with the monotonous decrease of switching electric fields of double hysteresis lops. Temperature dependence of the polarization, P(T), under different electric field draw convex curves on the top. P(T) curves with positive slope are observed at temperatures below 145℃ under electric field less than 300kV/cm. The adiabatic temperature change DT of -4.4℃ at 25℃ is estimated under DE = 160kV/cm.