文章基本信息

标题：Ferromagnetic CaRuO₃
本地全文：下载
作者：Shivendra Tripathi ; Rakesh Rana ; Sanjay Kumar 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2014
卷号：4
DOI：10.1038/srep03877
出版社：Springer Nature
摘要：The non-magnetic and non-Fermi-liquid CaRuO₃ is the iso-structural analog of the ferromagnetic (FM) and Fermi-liquid SrRuO₃. We show that an FM order in the orthorhombic CaRuO₃ can be established by the means of tensile epitaxial strain. The structural and magnetic property correlations in the CaRuO₃ films formed on SrTiO₃ (100) substrate establish a scaling relation between the FM moment and the tensile strain. The strain dependent crossover from non-magnetic to FM CaRuO₃ was observed to be associated with switching of non-Fermi liquid to Fermi-liquid behavior. The intrinsic nature of this strain-induced FM order manifests in the Hall resistivity too; the anomalous Hall component realizes in FM tensile-strained CaRuO₃ films on SrTiO₃ (100) whereas the non-magnetic compressive-strained films on LaAlO₃ (100) exhibit only the ordinary Hall effect. These observations of an elusive FM order are consistent with the theoretical predictions of scaling of the tensile epitaxial strain and the magnetic order in tensile CaRuO₃. We further establish that the tensile strain is more efficient than the chemical route to induce FM order in CaRuO₃.