{"paper":{"title":"Crucial effect of glass processing and melt homogenization on the fragility of non-stoichiometric chalcogenides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Diebold, K. Gunasekera, M. Micoulaut, P. Boolchand, Sriram Ravindren, Z. Tucker","submitted_at":"2013-11-25T18:02:23Z","abstract_excerpt":"The kinetics of homogenization of binary As$_x$Se$_{100-x}$ melts in the As concentration range $0\\%$ $<$ $x$ $<$ $50\\%$ are followed in FT-Raman profiling experiments, and show that 2 gram sized melts in the middle concentration range $20\\%$ $<$ $x$ $<$ $30\\%$ take nearly two weeks to homogenize when starting materials are reacted at 700$^o$C. In glasses of proven homogeneity, we find molar volumes to vary non-monotonically with composition, and the fragility index ${\\cal M}$ displays a broad global minimum in the $20\\%$ $<$ $x$ $<$ $30\\%$ range of $x$ wherein ${\\cal M}<$ 20. We show that pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.6385","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}