Impedance spectroscopic and phase transition study of a new Organic –Inorganic alkaline earth hybrid
Mostafa, M., Tammam, A., Gawad, D. (2018). Impedance spectroscopic and phase transition study of a new Organic –Inorganic alkaline earth hybrid. EKB Journal Management System, 46(1 (In Progress)), 7-15. doi: 10.21608/ejphysics.2018.3562.1001
Mohga Mostafa; A. K. Tammam; Dina Gawad. "Impedance spectroscopic and phase transition study of a new Organic –Inorganic alkaline earth hybrid". EKB Journal Management System, 46, 1 (In Progress), 2018, 7-15. doi: 10.21608/ejphysics.2018.3562.1001
Mostafa, M., Tammam, A., Gawad, D. (2018). 'Impedance spectroscopic and phase transition study of a new Organic –Inorganic alkaline earth hybrid', EKB Journal Management System, 46(1 (In Progress)), pp. 7-15. doi: 10.21608/ejphysics.2018.3562.1001
Mostafa, M., Tammam, A., Gawad, D. Impedance spectroscopic and phase transition study of a new Organic –Inorganic alkaline earth hybrid. EKB Journal Management System, 2018; 46(1 (In Progress)): 7-15. doi: 10.21608/ejphysics.2018.3562.1001

Impedance spectroscopic and phase transition study of a new Organic –Inorganic alkaline earth hybrid

Egyptian Journal of Physics
Article 2, Volume 46, 1 (In Progress), 2018, Pages 7-15    PDF (975.53 K)
Document Type: Original Article
DOI: 10.21608/ejphysics.2018.3562.1001
Authors
Mohga Mostafa* ; A. K. Tammam; Dina Gawad
Physics Department, Faculty of Science, Cairo University, Giza, Egypt
Abstract
The new organic– inorganic hybrid 1,7-heptanediammonium-calcium tetrachloride, with molecular formula [(CH2)7(NH3)2] CaCl4, crystallized in a monoclinic Pm space group, a= 4.625 A˚ , b = 11.205 A˚ , c = 12.391 A˚ ,  = 900  = 86.82 0,  = 900, V = 641.2 A˚3, density= 1.63 mgm-3 and Z= 2. Differential thermal scanning of the new organic–inorganic hybrid showed five phase changes; chain melting transitions at T1= 329.2 K and T2 = 326.49 K and three transitions at T3= 283.6 K, T4= 278.8 K and T5= 260.8 K associated with solid– solid phase changes. Permittivity and ac conductivity as a function of temperature (170 K- 425 K) and frequency (0.06 kHz
Keywords
Key words: Thermal properties; Dielectric properties; AC conductivity
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