{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,8]],"date-time":"2026-02-08T11:26:16Z","timestamp":1770549976918,"version":"3.49.0"},"reference-count":27,"publisher":"AIP Publishing","issue":"12","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,3,28]]},"abstract":"<jats:p>The discovery of a first-order phase transition in fluid phosphorus aroused renewed interest in polyamorphism in liquids with a locally tetrahedral molecular structure. We have performed in situ synchrotron x-ray diffraction measurements on tin tetraiodide, which consists of SnI4 tetrahedral molecules at ambient pressure, and established that the liquid forms existing above and below 1.5 GPa, where the slope of the melting curve of the solid phase changes abruptly, have different structures. This discovery offers evidence of thermodynamically stable polyamorphism in general compounds as well as in elements. A possible phase diagram that includes the two amorphous states already found is proposed based on the pseudobinary regular solution model. The vertex-to-face orientation between the nearest molecules plays a key role in the transition from the low-pressure to the high-pressure liquid phase.<\/jats:p>","DOI":"10.1063\/1.3109691","type":"journal-article","created":{"date-parts":[[2009,3,31]],"date-time":"2009-03-31T05:57:26Z","timestamp":1238479046000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":19,"title":["Polyamorphism in tin tetraiodide"],"prefix":"10.1063","volume":"130","author":[{"given":"Kazuhiro","family":"Fuchizaki","sequence":"first","affiliation":[{"name":"Ehime University 1 Department of Physics, , Matsuyama 790-8577, Japan"},{"name":"Institute for Molecular Science 2 , Okazaki, Aichi 444-8585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takaki","family":"Hase","sequence":"additional","affiliation":[{"name":"Ehime University 1 Department of Physics, , Matsuyama 790-8577, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akihiro","family":"Yamada","sequence":"additional","affiliation":[{"name":"Ehime University 3 GRC, , Matsuyama 790-8577, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nozomu","family":"Hamaya","sequence":"additional","affiliation":[{"name":"Ochanomizu University 4 Department of Physics, , Tokyo 112-8610, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshinori","family":"Katayama","sequence":"additional","affiliation":[{"name":"Japan Atomic Energy Agency 5 , Hyogo 679-5148, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ken-ichi","family":"Funakoshi","sequence":"additional","affiliation":[{"name":"JASRI 6 SPring-8, , Sayo, Hyogo 679-5198, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2009,3,27]]},"reference":[{"key":"2023062003542908500_c1","doi-asserted-by":"publisher","first-page":"2891","DOI":"10.1063\/1.1841150","volume":"46","year":"1967","journal-title":"J. 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