{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T11:22:09Z","timestamp":1753874529848,"version":"3.41.2"},"reference-count":76,"publisher":"AIP Publishing","issue":"18","license":[{"start":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T00:00:00Z","timestamp":1683504000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T00:00:00Z","timestamp":1683504000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,5,14]]},"abstract":"<jats:p>By using dielectric spectroscopy in a broad range of temperatures and frequencies, we have investigated dipolar relaxations, the dc conductivity, and the possible occurrence of polar order in AgCN. The conductivity contributions dominate the dielectric response at elevated temperatures and low frequencies, most likely arising from the mobility of the small silver ions. In addition, we observe the dipolar relaxation dynamics of the dumbbell-shaped CN\u2212 ions, whose temperature dependence follows the Arrhenius behavior with a hindering barrier of 0.59\u00a0eV (57 kJ\/mol). It correlates well with a systematic development of the relaxation dynamics with the cation radius, previously observed in various alkali cyanides. By comparison with the latter, we conclude that AgCN does not exhibit a plastic high-temperature phase with free rotation of the cyanide ions. Instead, our results indicate that a phase with quadrupolar order, revealing dipolar head-to-tail disorder of the CN\u2212 ions, exists at elevated temperatures up to the decomposition temperature, which crosses over to long-range polar order of the CN dipole moments below about 475\u00a0K. Dipole ordering was also reported for NaCN and KCN, and a comparison with these systems suggests a critical relaxation rate of 105\u2013107\u00a0Hz, marking the onset of dipolar order in the cyanides. The detected relaxation dynamics in this order\u2013disorder type polar state points to glasslike freezing below about 195\u00a0K of a fraction of non-ordered CN dipoles.<\/jats:p>","DOI":"10.1063\/5.0148873","type":"journal-article","created":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T10:12:41Z","timestamp":1683540761000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Dipolar relaxation, conductivity, and polar order in AgCN"],"prefix":"10.1063","volume":"158","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4525-1394","authenticated-orcid":false,"given":"P.","family":"Lunkenheimer","sequence":"first","affiliation":[{"name":"Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg 1 , 86159 Augsburg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5579-0746","authenticated-orcid":false,"given":"A.","family":"Loidl","sequence":"additional","affiliation":[{"name":"Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg 1 , 86159 Augsburg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9252-6373","authenticated-orcid":false,"given":"G. 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