Journal article

Publication year: 2013

Pages: 46-49

Journal: Solid State Ionics

Volume number: 237

ISSN: 0167-2738

DOI Link: https://doi.org/10.1016/j.ssi.2013.02.011

Publisher: Elsevier

Abstract: 
The anodic process during electro-thermal poling of one bioactive and three bioabsorbable glasses was investigated. by means of impedance spectroscopy and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The bioactive glass with the nominal composition 46.4% SiO2, 25.2%,Na2O, 25.2% CaO, 32% P2O5 (46S4) and the three bioabsorbable glasses of the CaX series ((55 - X)% Na2O, X% CaO, 45% P2O5, with X = 20, 30,40) were poled at temperatures between 473 K and 513 K using voltages between 50 V and 490 V. Both impedance spectroscopy studies during poling and subsequent ToF-SIMS profiling show that the thickness of the Na+ ion depletion layer under the anode increases in a linear fashion with increasing poling voltage. However, the same absolute values for the thickness were only obtained under the assumption that the dielectric permittivity of the depletion layer is about 2-3 times lower than the dielectric permittivity of the bulk glass. (C) 2013 Elsevier B.V. All rights reserved.

Harvard Citation style: Zakel, J., Heddinga, V., Steinmueller, S. and Roling, B. (2013) Investigation of sodium ion depletion layers in electrothermally poled bioglasses by combining impedance spectroscopy with ToF-SIMS depth profiling, Solid State Ionics, 237, pp. 46-49. https://doi.org/10.1016/j.ssi.2013.02.011

APA Citation style: Zakel, J., Heddinga, V., Steinmueller, S., & Roling, B. (2013). Investigation of sodium ion depletion layers in electrothermally poled bioglasses by combining impedance spectroscopy with ToF-SIMS depth profiling. Solid State Ionics. 237, 46-49. https://doi.org/10.1016/j.ssi.2013.02.011