V. N. Kruchinin, E. V. Spesivtsev, C. V. Rykhlitsky, V. A. Gritsenko, F. Mehmood, T. Mikolajick, U. Schroeder
{"title":"Optical Properties of Ferroelectric Films HfxZryO2 and La:HfxZryO2 according to Ellipsometry Data","authors":"V. N. Kruchinin, E. V. Spesivtsev, C. V. Rykhlitsky, V. A. Gritsenko, F. Mehmood, T. Mikolajick, U. Schroeder","doi":"10.1134/s0030400x23050107","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Recently ferroelectric properties have been found in hafnia-based nanosized films. Such films are of the utmost interest for development of a universal memory, which combines the advantages of random access memory and flash memory. The paper studies optical properties of hafnia-zirconium oxide films H-f<sub><i>x</i></sub>Zr<sub><i>y</i></sub>O<sub>2</sub> and lanthanum-alloyed hafnia-zirconium oxide films La:Hf<sub><i>x</i></sub>Zr<sub><i>y</i></sub>O<sub>2</sub>. Fluctuations of thickness in Hf<sub><i>x</i></sub>Zr<sub><i>y</i></sub>O<sub>2</sub> do not exceed 3.5%, fluctuations of thickness in La:Hf<sub><i>x</i></sub>Zr<sub><i>y</i></sub>O<sub>2</sub> films—3.2%. Optical properties are analyzed based on effective-medium theory. According to effective-medium theory data, Hf<sub><i>x</i></sub>Zr<sub><i>y</i></sub>O<sub>2</sub> films contain 46% HfO<sub>2</sub>, 54% ZrO<sub>2</sub>, La:Hf<sub><i>x</i></sub>Zr<sub><i>y</i></sub>O<sub>2</sub> films contain 47.5% HfO<sub>2</sub>, 52.4% ZrO<sub>2</sub>, 2.5% La<sub>2</sub>O<sub>3</sub>.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Spectroscopy","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s0030400x23050107","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Recently ferroelectric properties have been found in hafnia-based nanosized films. Such films are of the utmost interest for development of a universal memory, which combines the advantages of random access memory and flash memory. The paper studies optical properties of hafnia-zirconium oxide films H-fxZryO2 and lanthanum-alloyed hafnia-zirconium oxide films La:HfxZryO2. Fluctuations of thickness in HfxZryO2 do not exceed 3.5%, fluctuations of thickness in La:HfxZryO2 films—3.2%. Optical properties are analyzed based on effective-medium theory. According to effective-medium theory data, HfxZryO2 films contain 46% HfO2, 54% ZrO2, La:HfxZryO2 films contain 47.5% HfO2, 52.4% ZrO2, 2.5% La2O3.
期刊介绍:
Optics and Spectroscopy (Optika i spektroskopiya), founded in 1956, presents original and review papers in various fields of modern optics and spectroscopy in the entire wavelength range from radio waves to X-rays. Topics covered include problems of theoretical and experimental spectroscopy of atoms, molecules, and condensed state, lasers and the interaction of laser radiation with matter, physical and geometrical optics, holography, and physical principles of optical instrument making.