Specific heat and electrical conductivity of deuterated triglycine selenate single crystals |
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| Authors: | A. E. Hamed M. E. Kassem M. El-Osairy A. M. Okaz |
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| Affiliation: | 1. Physics Department, Faculty of Science , Alexandria University , Egypt;2. Engineering Physics and Mathematics Department, Faculty of Engineering , Alexandria University , Egypt |
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| Abstract: | Measurements of the specific heat were carried out on deuterated trigylcine selenate (DTGSe) single crystals to clarify its critical nature near the ferroelectric transition point (Tc ). The results obtained have indicated that DTGSe crystals deuterated by 90% exhibit a first-order phase transition. This paper presents also the electrical conductivity (δ) of DTGSe crystals. The deuterium substitution induces an increase in the Curie point Tc , and a decrease in the conductivity in the para- and ferroelectric phases accompanied by an increase in the activation energy (W) in both phases. |
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| Keywords: | DTGSe single crystals specific heat electrical conductivity |
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