Pandey, Abhishek ; Mazumdar, Chandan ; Ranganathan, R. ; Tripathi, S. ; Pandey, D. ; Dattagupta, S. (2008) Transverse vibrations driven negative thermal expansion in a metallic compound GdPd3B0.25C0.75 Applied Physics Letters, 92 (26). pp. 261913-261915. ISSN 0003-6951
Full text not available from this repository.
Official URL: http://apl.aip.org/resource/1/applab/v92/i26/p2619...
Related URL: http://dx.doi.org/10.1063/1.2953175
Abstract
We have observed negative thermal expansion (NTE) in a metallic, polycrystalline, and structurally ordered cubic compound GdPd3B0.25C0.75. Our analysis suggest that the NTE observed in this compound does not stems from valence or magnetic instability of lattice ions, which is in general the case of metallic compounds exhibiting such an anomaly. We propose a possible alternative mechanism, namely, the transverse vibrations at low temperatures arising from site anisotropy, that induce the lattice contraction thereby resulting in isotropic NTE. The observed NTE also reflects its effect on the electrical transport properties of this compounds.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Boron Compounds; Gadolinium Compounds; Palladium Compounds; Thermal Expansion |
| ID Code: | 88722 |
| Deposited On: | 29 Mar 2012 14:44 |
| Last Modified: | 12 Jul 2012 06:27 |
Repository Staff Only: item control page
