Crystal/glass phase change in KSb5S8 studied through thermal analysis techniques
dc.contributor.author | Chrissafis, K. | en |
dc.contributor.author | Kyratsi, Theodora | en |
dc.contributor.author | Paraskevopoulos, K. M. | en |
dc.contributor.author | Kanatzidis, M. G. | en |
dc.creator | Chrissafis, K. | en |
dc.creator | Kyratsi, Theodora | en |
dc.creator | Paraskevopoulos, K. M. | en |
dc.creator | Kanatzidis, M. G. | en |
dc.date.accessioned | 2019-05-06T12:23:29Z | |
dc.date.available | 2019-05-06T12:23:29Z | |
dc.date.issued | 2004 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/48291 | |
dc.description.abstract | The reversible crystal-glass and glass-crystal transitions discovered in KSb5S8 were studied in detail with nonisothermal scanning calorimetry techniques. When cooled, molten KSb5S8 becomes a metastable glass, which can quantitatively revert to the crystalline form if heated above 277 °C. Crystalline KSb5S8 is a red semiconductor with a band gap of 1.82 eV, whereas the glass (also red) shows a lower but equally well-defined band gap of 1.67 eV. Two approaches have been used to analyze the glass transition. The activation energy of crystallization Ec was calculated using the Kissinger (∼167 ± 3.1 kJ/mol) and Flynn-Wall-Ozawa methods. The kinetic parameters and energy band gaps determined for KSb5S8 suggest possible utility of this system for phase-change, high-density optical data storage applications. | en |
dc.language.iso | eng | en |
dc.source | Chemistry of Materials | en |
dc.subject | article | en |
dc.subject | quantitative analysis | en |
dc.subject | Scanning | en |
dc.subject | energy | en |
dc.subject | Crystallization | en |
dc.subject | Glass | en |
dc.subject | semiconductor | en |
dc.subject | crystal structure | en |
dc.subject | structure analysis | en |
dc.subject | thermal analysis | en |
dc.subject | cooling | en |
dc.subject | potassium | en |
dc.subject | Potassium compounds | en |
dc.subject | Activation energy | en |
dc.subject | analytic method | en |
dc.subject | antimony | en |
dc.subject | calculation | en |
dc.subject | Calorimetry | en |
dc.subject | Crystalline materials | en |
dc.subject | Crystals | en |
dc.subject | Energy band gaps | en |
dc.subject | Glass transition | en |
dc.subject | Glass-crystal transitions | en |
dc.subject | heating | en |
dc.subject | melting point | en |
dc.subject | molecular stability | en |
dc.subject | non isothermal scanning calorimetry | en |
dc.subject | Optical data storage | en |
dc.subject | optics | en |
dc.subject | phase transition | en |
dc.subject | sulfur derivative | en |
dc.title | Crystal/glass phase change in KSb5S8 studied through thermal analysis techniques | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1021/cm035065q | |
dc.description.volume | 16 | |
dc.description.startingpage | 1932 | |
dc.description.endingpage | 1937 | |
dc.author.faculty | Πολυτεχνική Σχολή / Faculty of Engineering | |
dc.author.department | Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering | |
dc.type.uhtype | Article | en |
dc.contributor.orcid | Kyratsi, Theodora [0000-0003-2916-1708] | |
dc.description.totalnumpages | 1932-1937 | |
dc.gnosis.orcid | 0000-0003-2916-1708 |
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