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1Author    R. Tchukvinskyi, R. Cach, Z. CzaplaRequires cookie*
 Title    Dielectric Study of the Ferroelectric Phase Transition in DMAGaS Crystal  
 Abstract    Electric permittivity measurments as functions of temperature at constant dc electric field and as func-tions of the dc electric field at constant temperatures in the paraelectric phase have been performed for DMAGaS crystal. The changes of the permittivity maximum with the electric field intensity evidence the first-order character of the ferroelectric phase transition at T cX . The field dependence of the permit-tivity e(E) in the paraelectric phase is discussed, using the classical electric equation of state. A meth-od for the determination of the corresponding coefficients is proposed. The obtained B and C coeffi-cients, together with double hysteresis loop observed above T cl prove the first-order character of the ferroelectric phase transition in DMAGaS crystal. 
  Reference    Z. Naturforsch. 53a, 105—111 (1998); received October 15 1998 
  Published    1998 
  Keywords    Ferroelectricity, Phase Transition, Dielectric Properties 
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 TEI-XML for    default:Reihe_A/53/ZNA-1998-53a-0105.pdf 
 Identifier    ZNA-1998-53a-0105 
 Volume    53