Low Field Relaxational Behavior of Taap Single Crystal (20-106 Hz) |
| J.R. Fernández del Castilloa, T. Iglesiasa, J. Przesławskib and J.A. Gonzaloa aDepartamento de Fjsica de Materiales, C-IV, Universidad Autónoma de Madrid, 28049 Madrid, Spain bInstitute of Experimental Physics, University of Wrocław, Pl. Maxa Borna 9, 50-205 Wrocław, Poland |
| Received: October 3, 1997; in final form December 8, 1997 |
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| Relaxational behavior of ferroelectric telluric acid ammonium phosphate crystals were investigated in the range 20 Hz to 1 MHz by means of low field measurements of ε' and tan δ in the vicinity of ferroelectric phase transitions at a number of frequencies. Results are compared with those for triglycine selenate, a much "softer" ferroelectric material. The measuring field and frequency dependence of the effective potential barrier height for domain wall motion are compared in both crystals. |
| DOI: 10.12693/APhysPolA.93.499 PACS numbers: 64.60.Fr, 77.80.-e |