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Configuration dependence of domain contribution to the dielectric properties of relaxor

リラクサーにおける、誘電率へのドメイン階層構造の寄与

大和田 謙二; 水木 純一郎; 並河 一道*; 松下 三芳*; 下村 晋*; 中尾 裕則*; 廣田 和馬*

Owada, Kenji; Mizuki, Junichiro; Namikawa, Kazumichi*; Matsushita, Mitsuyoshi*; Shimomura, Susumu*; Nakao, Hironori*; Hirota, Kazuma*

To know structures and dynamics of domains in materials is one of the most critical issues in the field of ferroelectrics. This is mainly because an existence of the domains sophisticates the function of the materials. It is well known that relaxor having a nano sized ferroelectric domains so-called polar nano region (PNR) shows a large dielectric and piezoelectric responses. But the relationship between dielectric dispersion and the higher order structure has not been understood well. In this paper, we will report a configuration dependence of domain contribution to the dielectric properties of relaxor. The problem should be closely related to the first order phase transition of ferroelectrics.

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