{"title":"Measurements of Photorefractive Properties in BaTiO3:Co","authors":"D. Rytz, B. Wechsler, M. H. Garrett, C. C. Nelson","doi":"10.1364/pmed.1990.a2","DOIUrl":null,"url":null,"abstract":"In the past, the photorefractive properties of BaTiO3 crystals doped with chromium [1] and iron [2, 3] have been described. Iron impurities, present in nominally undoped .crystals at levels between 40 and 150 ppm, have been identified as the microscopic centers correlated with the photorefractive effect [4]. The observed photorefractive effect in high purity crystals, however, with an iron level claimed to be smaller than 0.3 ppm [3], has been interpreted as evidence for another photorefractive species in these samples. The exact role of transition metal dopants in photorefractive BaTiO3 is still unclear.","PeriodicalId":385625,"journal":{"name":"Topical Meeting on Photorefractive Materials, Effects, and Devices II","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topical Meeting on Photorefractive Materials, Effects, and Devices II","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/pmed.1990.a2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In the past, the photorefractive properties of BaTiO3 crystals doped with chromium [1] and iron [2, 3] have been described. Iron impurities, present in nominally undoped .crystals at levels between 40 and 150 ppm, have been identified as the microscopic centers correlated with the photorefractive effect [4]. The observed photorefractive effect in high purity crystals, however, with an iron level claimed to be smaller than 0.3 ppm [3], has been interpreted as evidence for another photorefractive species in these samples. The exact role of transition metal dopants in photorefractive BaTiO3 is still unclear.