島根大学教育学部
ISSN:2433-5355(オンライン)
ISSN:1880-8581(冊子体)
A publication of this bulletin in print format has not been made since no.51.
ISSN:1880-8581(冊子体)
A publication of this bulletin in print format has not been made since no.51.
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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/6990
Memoirs of the Faculty of Education, Shimane University 43
2009-12-25 発行
KF添加Ba-Ti-O系強誘電体の比較 : BaTiO_3単結晶とBaTi_2O_5セラミックス
A comparison of KF-doped Ba-Ti-O System Ferroelectrics : BaTiO_3 Single Crystals and BaTi_2O_5 Ceramics
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Temperature dependence of the dielectric constant on Ba_(1-x)K_xTiO_(3-x)F_x single crystals (0<x<0.13) was measured in a temperature range between 100 K and 450 K, and the relation of the phase transition temperatures vs. KF content was examined. The ferroelectric Curie-temperature T_C decreases monotonously from 390 K to 280 K with increasing x from 0 to 0.12, while the maximum value of the dielectric constant ε_(max) at T_C exhibits a peak around x=0.1. Furthermore, temperature dependence of the dielectric constant on Ba_(1-x)K_xTiO_(3-x)F_x ceramics (0<=x <=0.05) was measured in a temperature range between 100 K and 850 K. The ferroelectric Curie-temperature T_C steeply decreases by about 250 K by 1% KF-doping. The KF-doping effect on the ferroelectric properties was compared between BaTiO_3 and BaTi_2O_5
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PP. 61 - 65
PP. 111 - 115