{"title":"Intergrowths of oxygen defect perovskite layers and SrO layers: Electron transport properties of the oxides: La2−xA1+xCu2O6−x/2+σ (A = Ca, Sr)","authors":"N. Nguyen, C. Michel, F. Studer, B. Raveau","doi":"10.1016/0390-6035(82)90018-9","DOIUrl":null,"url":null,"abstract":"<div><p>The conductivity, Seebeck effect and magnetic susceptibility of the oxides La<sub>2−x</sub>A<sub>1+x</sub>Cu<sub>2</sub>O<sub>6−x/2+<em>σ</em></sub> (A = Ca, Sr) have been investigated. These compounds which contain variable amounts of trivalent copper are characterized by a hole conduction. A progressive evolution of the electron transport properties from a semi-conductor to a semi-metal is observed according to the amount of Cu<sup>3+</sup>. These properties are interpreted in terms of a Mott band model. The influence of the oxygen pressure during the electrical measurements is also considered.</p></div>","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"7 3","pages":"Pages 413-427"},"PeriodicalIF":0.0000,"publicationDate":"1982-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-6035(82)90018-9","citationCount":"28","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0390603582900189","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 28
Abstract
The conductivity, Seebeck effect and magnetic susceptibility of the oxides La2−xA1+xCu2O6−x/2+σ (A = Ca, Sr) have been investigated. These compounds which contain variable amounts of trivalent copper are characterized by a hole conduction. A progressive evolution of the electron transport properties from a semi-conductor to a semi-metal is observed according to the amount of Cu3+. These properties are interpreted in terms of a Mott band model. The influence of the oxygen pressure during the electrical measurements is also considered.
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