Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Analysis of AC Permittivity Response Measured in an Ionic Glass: a Comparison between Iso and Non-iso Thermal Conditions
Δημιουργός/Συγγραφέας:	Henn, Francois Devautour-Vinot, Sabine Giuntini, Jean-Charles Bisquert, Juan Garcia-Belmonte, Germa [EL] Βαρσάμης, Χρήστος-Πλάτων Ε.[EN] Varsamis, Christos-Platon E. [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I.
Εκδότης:	IEEE-inst Electrical Electronics Engineers Incorporated
Τόπος έκδοσης:	Piscataway
Ημερομηνία:	2010-08
Γλώσσα:	Αγγλικά
ISSN:	1070-9878
Περίληψη:	AC permittivity is measured on a sodium aluminosilicate glass as a function of frequency and temperature using various experimental conditions. The spectra obtained under isothermal and non-isothermal experiments, with insulating barriers placed on both sides of the sample, are compared. An RC equivalent circuit is proposed to account for the experimental behavior and data are analyzed in terms of activation energy distribution. Then, it is pointed out that the dielectric loss signal measured under ramping temperature and fixed frequency conditions lacks of information in the low temperature range. Therefore, the distribution function obtained in that way must be refined in order to account for the high frequency part of the ac permittivity responses measured at fixed temperature and variable frequency. An additional exponential decay contribution to the distribution function appears thus necessary, though its statistical weight is extremely low. This contribution is akin to the so-called CPA (constant phase angle) or NCL (nearly constant loss) behavior.
Τίτλος πηγής δημοσίευσης:	Ieee Transactions on Dielectrics and Electrical Insulation
Τόμος/Κεφάλαιο:	17
Τεύχος:	4
Σελίδες:	1164-1171
Θεματική Κατηγορία:	[EL] Φυσική[EN] Physics [EL] Μηχανική (Γενικά). Πολιτική μηχανική (Γενικά)[EN] Engineering (General). Civil engineering (General)
Λέξεις-Κλειδιά:	Ac conductivity ionic glasses distribution of activation energy equivalent RC circuit Engineering, Electrical & Electronic Physics, Applied
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Ηλεκτρονική διεύθυνση περιοδικού (link) :	http://ieeexplore.ieee.org/servlet/opac?punumber=94
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο