Low frequency electrical behavior of ferroelectric MASD

Mansingh, Abhai ; Krupanidhi, S. B. ; Prasad, E. (1978) Low frequency electrical behavior of ferroelectric MASD Journal of Chemical Physics, 69 (7). pp. 3039-3043. ISSN 0021-9606

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Official URL: http://jcp.aip.org/resource/1/jcpsa6/v69/i7/p3039_...

Related URL: http://dx.doi.org/10.1063/1.436994


The low frequency dielectric constant measurements in MASD (Methylammonium Aluminum Sulphate Dodecahydrate) indicate a second order ferro to paraelectric transition. Additional transitions are also indicated at about 145° K and 153° K by very small anomalies in the dielectric constant measurements. The thickness dependent dielectric measurements suggest the formation of a single homogeneous surface layer and the surface capacitance seems to be independent of temperature. Dielectric dispersion (in the frequency range 30-100 KHz) has been observed in the ferroelectric phase and can be attributed to domain wall motions.

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