{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T12:54:05Z","timestamp":1792068845342,"version":"4.4.0"},"reference-count":73,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T00:00:00Z","timestamp":1791849600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T00:00:00Z","timestamp":1791849600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    ScN alloyed AlN (Sc\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    Al\n                    <jats:sub>1\u2010<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    N, ScAlN, or AlScN) is a wurtzite semiconductor with attractive ferroelectric, dielectric, piezoelectric, and optical properties. Here, using electron ptychography in combination with a suite of experimental and theoretical methods, we show that ScAlN films (with\n                    <jats:italic>x<\/jats:italic>\n                    spanning 0.18 to 0.36) contain nanoscale Sc\u2010rich clusters which maintain the wurtzite crystal structure. While both molecular beam epitaxy (MBE) and sputter deposited Sc\n                    <jats:sub>0.3<\/jats:sub>\n                    Al\n                    <jats:sub>0.7<\/jats:sub>\n                    N films show Sc clustering, the degree of clustering is significantly stronger for the MBE\u2010grown film, offering an explanation for some of the discrepancies between MBE\u2010grown and sputtered films reported in the literature. Moreover, the MBE\u2010grown Sc\n                    <jats:sub>0.3<\/jats:sub>\n                    Al\n                    <jats:sub>0.7<\/jats:sub>\n                    N film exhibits a dispersive and anomalously large dielectric permittivity, roughly double that of sputtered Sc\n                    <jats:sub>0.3<\/jats:sub>\n                    Al\n                    <jats:sub>0.7<\/jats:sub>\n                    N. We attribute this result to the Sc\u2010rich clusters locally reaching\n                    <jats:italic>x<\/jats:italic>\n                    \u223c 0.5 and approaching the predicted ferroelectric\u2010to\u2010paraelectric phase transition, resulting in a giant (local) enhancement in permittivity. The Sc\u2010rich clusters should similarly affect the piezoelectric, optical, and ferroelectric responses, suggesting cluster\u2010engineering as a means to tailor ScAlN's functional properties.\n                  <\/jats:p>","DOI":"10.1002\/adma.75172","type":"journal-article","created":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T08:43:55Z","timestamp":1791881035000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Enhanced Permittivity in Wurtzite ScAlN Through Nanoscale Sc Clustering"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2960-6925","authenticated-orcid":false,"given":"James L.","family":"Hart","sequence":"first","affiliation":[{"name":"Nova Research Inc.  Alexandria Virginia USA"},{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0993-6134","authenticated-orcid":false,"given":"Andrew C.","family":"Lang","sequence":"additional","affiliation":[{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8016-6347","authenticated-orcid":false,"given":"Matthew T.","family":"Hardy","sequence":"additional","affiliation":[{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Saikat","family":"Mukhopadhyay","sequence":"additional","affiliation":[{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2053-7054","authenticated-orcid":false,"given":"Vikrant J.","family":"Gokhale","sequence":"additional","affiliation":[{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James G.","family":"Champlain","sequence":"additional","affiliation":[{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bethany M.","family":"Hudak","sequence":"additional","affiliation":[{"name":"U.S. Naval Research Laboratory  Washington District of Columbia USA"},{"name":"Center for Advanced Microscopy Michigan State University  East Lansing Michigan USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9214-716X","authenticated-orcid":false,"given":"Gabriel","family":"Giribaldi","sequence":"additional","affiliation":[{"name":"Institute for NanoSystems Innovation (NanoSI) Northeastern University  Boston Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2069-4949","authenticated-orcid":false,"given":"Luca","family":"Colombo","sequence":"additional","affiliation":[{"name":"Institute for NanoSystems Innovation (NanoSI) Northeastern University  Boston Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-1279-1502","authenticated-orcid":false,"given":"Matteo","family":"Rinaldi","sequence":"additional","affiliation":[{"name":"Institute for NanoSystems Innovation (NanoSI) Northeastern University  Boston Massachusetts 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