{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T04:42:27Z","timestamp":1768711347259,"version":"3.49.0"},"reference-count":39,"publisher":"International Union of Crystallography (IUCr)","issue":"4","license":[{"start":{"date-parts":[[2020,6,8]],"date-time":"2020-06-08T00:00:00Z","timestamp":1591574400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html"},{"start":{"date-parts":[[2020,6,8]],"date-time":"2020-06-08T00:00:00Z","timestamp":1591574400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html#TDM"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["J Synchrotron Rad","J Synchrotron Radiat"],"accepted":{"date-parts":[[2020,5,7]]},"published-print":{"date-parts":[[2020,7,1]]},"abstract":"<jats:p>Zirconate systems having the composition 3HfO<jats:sub>2<\/jats:sub>\u00b715SiO<jats:sub>2<\/jats:sub>\u00b7<jats:italic>x<\/jats:italic>Y<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub>\u00b7(82 \u2212 <jats:italic>x<\/jats:italic>)ZrO<jats:sub>2<\/jats:sub>, where <jats:italic>x<\/jats:italic> = 2, 7 and 12\u2005mol% Y<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub>, were synthesized by a sol-gel method. The analysis of X-ray diffraction data showed the presence of the t-ZrO<jats:sub>2<\/jats:sub>, m-ZrO<jats:sub>2<\/jats:sub>, m-HfO<jats:sub>2<\/jats:sub>, Y<jats:sub>2<\/jats:sub>SiO<jats:sub>5<\/jats:sub> and Y<jats:sub>2<\/jats:sub>Si<jats:sub>2<\/jats:sub>O<jats:sub>7<\/jats:sub> crystalline phases in a ceramic nanomixture. Spectroscopic data show that the increase of the Y<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> content of samples determines the increase of the t-ZrO<jats:sub>2<\/jats:sub>, m-HfO<jats:sub>2<\/jats:sub> and silicate crystalline phases. Gap energy values decrease almost linearly with increasing Y<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> content of samples. A detailed study of XANES data does not show a significant difference with increasing Y<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> content of the samples suggesting an appreciable stability of the hafnium ions +4 oxidation state and their microvicinity. EXAFS results show that the local structure around the Hf cation is similar to that from the monoclinic crystalline HfO<jats:sub>2<\/jats:sub> where the Hf\u2013O coordination number tends to 7. The bond lengths of Hf\u2013O shells show small deviations from \u223c2.12\u2005\u00c5 and the Hf\u2013metal paths become more structured by increasing the Y<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> content of the\u00a0samples.<\/jats:p>","DOI":"10.1107\/s1600577520006207","type":"journal-article","created":{"date-parts":[[2020,6,8]],"date-time":"2020-06-08T17:02:26Z","timestamp":1591635746000},"page":"970-978","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":5,"title":["Characteristics and local structure of hafnia-silicate-zirconate ceramic nanomixtures"],"prefix":"10.1107","volume":"27","author":[{"given":"L.","family":"Pop","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Rada","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"An","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Rada","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R. 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