Temperature Dependent RF Impedance in Ni Nanocrystalline Powders
Abstract:The RF impedance of nanocrystalline Ni (nc-Ni), and oxygen stabilized Ni (OS-Ni), nano crystalline powders are measured at 1 MHz as a function of temperature. Nanocrystalline Ni particles are obtained by ball milling technique while OS-Ni particles are synthesized via a chemical route and followed by annealing at 400 °C for 1 hour. The impedance of OS-Ni system is almost independent of temperature and an order of magnitude less than the nc-Ni powders. In contrast to the OS-Ni particulate powders, the RF impedance of pure Ni nano powders shows clear linear temperature dependence. The results are analysed in terms of classical electrodynamics.
Document Type: Short Communication
Publication date: 2010-09-01
More about this publication?
- ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites