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| Title: | Comparison of Electrical Properties between Ca and Sr Hydroxyapatites Materials |
| Authors: | Roy, P K
Kalia, V
Bera, J |
| Keywords: | ceramics
hydroxyapatite
electrical properties
relative humidity |
| Issue Date: | 2004 |
| Publisher: | Indian Institute of Technology, Kharagpur |
| Citation: | International Symposium on Advanced Materials and Processing ISAMAP2K4, 6-8 December 2004, IIT, Kharagpur, India |
| Abstract: | Porous Calcium and Strontium hydroxyapatites (HAP) were prepared by wet chemical methods. The
samples are characterized by XRD and SEM. Also electrical properties were measured at different relative
humidity (RH). It is found that Sr-HAP is better dielectric material for bio-electronics application as it has
higher dielectric constant than Ca-HAP. Dielectric constant of both the materials increases with RH due to
the increase in polarizability of the structure. Conductivity was measured from impedance spectroscopy.
Conductivity of both the materials increases with RH due to the increase in protonic conductor
concentration. Intrinsic ionic conductivity in both the material decreases with the increase in temperature
due to the loss of adsorb water in the lower temperature range. |
| Description: | Copyright for this article belongs to IIT Kharagpur, India |
| URI: | http://hdl.handle.net/2080/227 |
| Appears in Collections: | Conference Papers
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