| Reference Type | Journal (article/letter/editorial) |
|---|
| Title | A neutron powder diffraction determination of the thermal expansion tensor of crocoite (PbCrO4) between 60 K and 290 K |
|---|
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
|---|
| Authors | Knight, Kevin S. | Author |
|---|
| Year | 1996 (December) | Volume | 60 |
|---|
| Issue | 403 |
|---|
| Publisher | Mineralogical Society |
|---|
| Download URL | https://rruff.info/doclib/MinMag/Volume_60/60-403-963.pdf+ |
|---|
| DOI | doi:10.1180/minmag.1996.060.403.11Search in ResearchGate |
|---|
| Generate Citation Formats |
|---|
| Mindat Ref. ID | 125 | Long-form Identifier | mindat:1:5:125:2 |
|---|
|
| GUID | 0 |
|---|
| Full Reference | Knight, Kevin S. (1996) A neutron powder diffraction determination of the thermal expansion tensor of crocoite (PbCrO4) between 60 K and 290 K. Mineralogical Magazine, 60 (403) 963-972 doi:10.1180/minmag.1996.060.403.11 |
|---|
| Plain Text | Knight, Kevin S. (1996) A neutron powder diffraction determination of the thermal expansion tensor of crocoite (PbCrO4) between 60 K and 290 K. Mineralogical Magazine, 60 (403) 963-972 doi:10.1180/minmag.1996.060.403.11 |
|---|
| In | (1996, December) Mineralogical Magazine Vol. 60 (403) Mineralogical Society |
|---|
| Abstract/Notes | AbstractThe thermal expansion tensor of crocoite has been determined from high-resolution neutron time-of-flight powder diffraction data. The temperature dependence of the lattice constants between 4.5 K and 290 K have been fitted to a quasi-harmonic Einstein model, and the temperature dependence of the thermal expansion tensor has been calculated for 60 K ≤ T ≤ 290 K. The magnitudes of the principal expansivities and their orientation exhibit saturation behaviour for temperatures above 300 K. The predicted saturated expansion coefficients are α11 = 33.1(1) × 10−6K−1, α22 = 15.72(3) × 10−6K−1, α33 = 3.36(1) × 10−6K−1, with α22 parallel to b and α11 lying at an angle of −37.86(5)° to c for the P21/n setting of the crystal structure. The direction of maximum expansion is approximately parallel to both and the least-squares line passing through the projection of the chromium atoms on (010). The direction of minimum expansion lies approximately parallel to [101]. No evidence was found for either a structural or magnetic phase transition between 4.5 K and 300 K. |
|---|
These are possibly similar items as determined by title/reference text matching only.
