Effect of Surface Layers on the Coercive Field, Spontaneous Polarization and Dielectric Constant of Triglycine Selenate

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概要

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• The coercive field and spontaneous polarization have been measured as afunction of temperature ( -]0'C to 22'C) for different thicknesses (about 2 mmto 0.5 mm) of triglycine selenate crystals. The thickness dependent dielectricconstant has also been measured at frequencies ] kHz, 10 kHz and TOO kHz.The coercive field is found to be inversely proportional to the thickness of thesample. The spontaneous polarization has been found to decrease with decreasingthickness and the effect is most pronounced at smaller thicknesses. The resultscan be explained by assuming a single homogeneous surface layer of low dielectricconstant. However, the numerical values of surface layer thickness estimatedfrom the coercive field measurements are two order of magnitude higher thanthose derived from thickness dependent dielectric constant measurements.

• 社団法人日本物理学会の論文
• 1979-04-15

著者

• Gulshan Rai

  Department Of Physics And Astrophysics University Of Delhi

• Abhai Mansingh

  Department Of Physics And Astrophysics University Of Delhi

• Mansingh Abhai

  Department of Physics and Astrophysics,University of Delhi

• Rai Gulshan

  Department of Physics and Astrophysics,University of Delhi

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• Effect of Surface Layers on the Coercive Field, Spontaneous Polarization and Dielectric Constant of Triglycine Selenate

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