{"title":"Features of Thin Films of Barium Strontium Niobate Probed by Brillouin Light Scattering","authors":"A. M. Pugachev, A. V. Tumarkin","doi":"10.1134/S1062873824709322","DOIUrl":null,"url":null,"abstract":"<p>Brillouin spectra of barium strontium niobate thin films SBN-75 on sapphire substrate were measured in different scattering geometries. The spectral shape of the LA mode in the backscattering and 90A geometries were analyzed. The results are compared with the corresponding measurements on a relatively thick barium strontium niobate film and a bulk crystal. It is shown that a broad anomalously large peak in the vicinity of 25 GHz appears in the Brillouin scattering in SBN-75 films on a sapphire substrate after annealing. Spectral and scanning electron microscopy experimental studies were carried out (to identify the nature of this peak).</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 2 supplement","pages":"S224 - S228"},"PeriodicalIF":0.4800,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Russian Academy of Sciences: Physics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1062873824709322","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
Abstract
Brillouin spectra of barium strontium niobate thin films SBN-75 on sapphire substrate were measured in different scattering geometries. The spectral shape of the LA mode in the backscattering and 90A geometries were analyzed. The results are compared with the corresponding measurements on a relatively thick barium strontium niobate film and a bulk crystal. It is shown that a broad anomalously large peak in the vicinity of 25 GHz appears in the Brillouin scattering in SBN-75 films on a sapphire substrate after annealing. Spectral and scanning electron microscopy experimental studies were carried out (to identify the nature of this peak).
期刊介绍：
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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