Nonlinear Dielectric Constants in Barium Titanate

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概要

• 論文の詳細を見る

• An apparatus for detecting small second and third harmonics due to the dielectric nonlinearity is devised. A reactance filter network is used to obtain pure sine wave voltage and high detection sensitivity. The higher harmonic level applied to the crystal is suppressed to the order of 5×10^<-7> times below the fundamental voltage. This apparatus is used for measuring the nonlinear dielectric constants of BaTiO_3 single crystals above and below the Curie point (120℃). The experimental results show that the coefficient of the P^4 term in the Devonshire's equation increases gradually with increasing temperature, which is against the previous result reported by Drougard et al.

• 社団法人日本物理学会の論文
• 1973-02-05

著者

• Abe Ryuji

  Department Fo Applied Physics Faculty Of Engineering Nagoya University

• Matsuda Takashi

  Department Of Applied Mathematics And Physics Faculty Of Engineering Kyoto University

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