{"title":"来自ESR测量的YBa2Cu3O7−δ中Cu3+的证据:重新评估","authors":"M.D. Sastry","doi":"10.1016/0378-4363(88)90306-3","DOIUrl":null,"url":null,"abstract":"<div><p>Blank et al. [Physica 145B (1987) 222] in a recent letter reported Q-band ESR measurements on YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−δ</sub> suggesting the presence of 10 to 15% of Cu<sup>3+</sup>. It is shown in this article that their assignment of the ESR line at <em>g</em>=2.08 to Cu<sup>3+</sup> is incorrect. Further it is pointed out that the assignment of this line to low-spin Cu<sup>4+</sup> cannot be ruled out.</p></div>","PeriodicalId":101023,"journal":{"name":"Physica B+C","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4363(88)90306-3","citationCount":"2","resultStr":"{\"title\":\"Evidence for Cu3+ in YBa2Cu3O7−δ from ESR measurements: A reassessment\",\"authors\":\"M.D. Sastry\",\"doi\":\"10.1016/0378-4363(88)90306-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Blank et al. [Physica 145B (1987) 222] in a recent letter reported Q-band ESR measurements on YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−δ</sub> suggesting the presence of 10 to 15% of Cu<sup>3+</sup>. It is shown in this article that their assignment of the ESR line at <em>g</em>=2.08 to Cu<sup>3+</sup> is incorrect. Further it is pointed out that the assignment of this line to low-spin Cu<sup>4+</sup> cannot be ruled out.</p></div>\",\"PeriodicalId\":101023,\"journal\":{\"name\":\"Physica B+C\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0378-4363(88)90306-3\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physica B+C\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0378436388903063\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica B+C","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0378436388903063","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
摘要
Blank et al. [Physica 145B(1987) 222]在最近的一篇文章中报道了对YBa2Cu3O7−δ的q波段ESR测量结果，表明存在10%至15%的Cu3+。本文表明，他们在g=2.08时将ESR线分配给Cu3+是不正确的。进一步指出不能排除这条线是低自旋Cu4+的归属。
Evidence for Cu3+ in YBa2Cu3O7−δ from ESR measurements: A reassessment
Blank et al. [Physica 145B (1987) 222] in a recent letter reported Q-band ESR measurements on YBa2Cu3O7−δ suggesting the presence of 10 to 15% of Cu3+. It is shown in this article that their assignment of the ESR line at g=2.08 to Cu3+ is incorrect. Further it is pointed out that the assignment of this line to low-spin Cu4+ cannot be ruled out.
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