Heat capacity, thermal expansion and heat transport in the Han Blue (BaCuSi4O10): Observation of structural phase transitions
| Autor: | S. H. Masunaga, Narayan Prasai, A. Rebello, John J. Neumeier, Joshua L. Cohn, A. T. Schye |
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| Rok vydání: | 2015 |
| Předmět: |
Phase transition
Chemistry(all) Condensed matter physics Chemistry Thermodynamics General Chemistry Atmospheric temperature range Grüneisen parameter Condensed Matter Physics Thermal conduction Thermal diffusivity Heat capacity Thermal expansion Thermal conductivity Materials Science(all) General Materials Science |
| Zdroj: | Journal of Physics and Chemistry of Solids. 85:69-74 |
| ISSN: | 0022-3697 |
| Popis: | Structural phase transitions at 87 K and 103 K are reported for single-crystalline Han Blue (BaCuSi4O10) by means of high-resolution thermal-expansion, thermal conductivity and heat capacity measurements. The phase transition at 103 K results in differing lengths of the a and b lattice parameters, and thus a lowering of the crystallographic symmetry. Negative thermal-expansion coefficients are observed perpendicular to the c-axis over a wide temperature range T 108 K 350 K (< |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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