Dielectric Dispersion Studies in (CH3)2NH2Ga(SO4)2 · 6H2O (DMAGaS) Crystal |
| Z. Czapla and R. Tchukvinskyi Institute of Experimental Physics, University of Wrocław, Pl. M. Borna 9, 50-204 Wrocław, Poland |
| Received: August 27, 1997; in final form December 10, 1997 |
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| The paper presents the new data of dielectric dispersion in DMAGaS crystal. The very pronounced dispersion above Tc1 =136 K is observed in the frequency range 100 Hz-30 MHz with a single relaxation process. The relaxation time τ of an electric dipole reaches 2.17×10-7 s at the Tc1. The activation free energy ∆F of the dipoles is estimated to be equal to 0.087 eV. The order-disorder type of phase transition is confirmed. |
| DOI: 10.12693/APhysPolA.93.527 PACS numbers: 77.80.Bh |