{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:51:00Z","timestamp":1753872660728,"version":"3.41.2"},"reference-count":17,"publisher":"AIP Publishing","issue":"25","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2008,6,23]]},"abstract":"<jats:p>We report the microwave dielectric properties and photoluminescence of undoped and europium oxide doped Ta2O5 fibers, grown by laser heated pedestal growth technique. The effects of Eu2O3 doping (1\u20133mol%) on the structural, optical, and dielectric properties were investigated. At a frequency of 5GHz, the undoped material exhibits a dielectric permittivity of 21 and for Eu2O3 doped Ta2O5 samples it increases, reaching up to 36 for the highest doping concentration. Nevertheless, the dielectric losses maintain a very low value. For this wide band gap oxide, Eu3+ optical activation was achieved and the emission is observed up to room temperature. Thus, the transparency and high permittivity make this material promising for electronic devices and microwave applications.<\/jats:p>","DOI":"10.1063\/1.2952284","type":"journal-article","created":{"date-parts":[[2008,6,25]],"date-time":"2008-06-25T22:20:30Z","timestamp":1214432430000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["Microwave dielectric permittivity and photoluminescence of Eu2O3 doped laser heated pedestal growth Ta2O5 fibers"],"prefix":"10.1063","volume":"92","author":[{"given":"C. P. L.","family":"Rubinger","sequence":"first","affiliation":[{"name":"Universidade de Aveiro 1 Departamento de F\u00edsica e I3N, , 3810\u2013193 Aveiro, Portugal"}]},{"given":"L. C.","family":"Costa","sequence":"additional","affiliation":[{"name":"Universidade de Aveiro 1 Departamento de F\u00edsica e I3N, , 3810\u2013193 Aveiro, Portugal"}]},{"given":"M.","family":"Macatr\u00e3o","sequence":"additional","affiliation":[{"name":"Universidade de Aveiro 1 Departamento de F\u00edsica e I3N, , 3810\u2013193 Aveiro, Portugal"}]},{"given":"M.","family":"Peres","sequence":"additional","affiliation":[{"name":"Universidade de Aveiro 1 Departamento de F\u00edsica e I3N, , 3810\u2013193 Aveiro, Portugal"}]},{"given":"T.","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Universidade de Aveiro 1 Departamento de F\u00edsica e I3N, , 3810\u2013193 Aveiro, Portugal"}]},{"given":"F. 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