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While such electronic properties are typically modeled assuming perfect crystallinity, disordering of the O sublattice under pressure is qualitatively known. Here a quantitative approach is thus employed, combining extended X-ray absorption fine-structure (EXAFS) spectroscopy with X-ray diffraction, to probe the extent of Sn\u2014O bond anharmonicities in the high-pressure cubic (Pa\\bar{3}) SnO<jats:sub>2<\/jats:sub> \u2013 formed as a single phase and annealed by CO<jats:sub>2<\/jats:sub> laser heating to 2648 \u00b1 41\u2005K at 44.5\u2005GPa. This combinational study reveals and quantifies a large degree of disordering in the O sublattice, while the Sn lattice remains ordered. Moreover, this study describes implementation of direct laser heating of non-metallic samples by CO<jats:sub>2<\/jats:sub> laser alongside EXAFS, and the high quality of data which may be achieved at high pressures in a diamond anvil cell when appropriate thermal annealing is applied.<\/jats:p>","DOI":"10.1107\/s1600577519003904","type":"journal-article","created":{"date-parts":[[2019,5,14]],"date-time":"2019-05-14T16:10:46Z","timestamp":1557850246000},"page":"1245-1252","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":8,"title":["Probing disorder in high-pressure cubic tin (IV) oxide: a combined X-ray diffraction and absorption study"],"prefix":"10.1107","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5204-9920","authenticated-orcid":true,"given":"Daniel","family":"Sneed","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John S. 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