| DOI | Resolve DOI: https://doi.org/10.1139/p04-073 |
|---|
| Author | Search for: Steinitz, Michael O.; Search for: Pink, David A.; Search for: Clancy, J. Patrick; Search for: MacDonald, A. Nicole; Search for: Swainson, Ian1 |
|---|
| Affiliation | - National Research Council Canada. NRC Canadian Neutron Beam Centre
|
|---|
| Format | Text, Article |
|---|
| Abstract | Capacitance dilatometry was used to measure the relative thermal expansivity, ΔL/L₀, of single crystals of sodium nitrate (NaNO₃) as a function of temperature. From these measurements, the phase transition at Tf = 550 K shows characteristics of a discontinuous transition. A theory based on the competition between long-range interactions and the entropy gained by rotating NO3⁻₃ groups at high temperatures predicts a discontinuous transition at T = Tf with ΔL/L₀ sim (Tf – T)ζ with ζ = 1. Our measurements yield ζ ≈ 1. |
|---|
| Publication date | 2004-11-30 |
|---|
| Publisher | National Research Council Canada. NRC Research Press |
|---|
| In | |
|---|
| NPARC number | 12328115 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | ca832c56-5b69-462d-8cfd-0a2ffffb8d60 |
|---|
| Record created | 2009-09-10 |
|---|
| Record modified | 2025-12-05 |
|---|
