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arXiv · 1705.09774

Magnetic and magnetotransport properties of ThCr2Si2-type Ce2O2Bi composed of conducting Bi2- square net and magnetic Ce-O layer

Shunsuke Shibata·Ryosuke Sei·Tomoteru Fukumura·Tetsuya Hasegawa
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Abstract

ThCr2Si2-type Ce2O2Bi epitaxial thin films were grown by recently developed multilayer solid phase epitaxy. The ionic state of Ce was confirmed to be 3+ by x-ray photoelectron spectroscopy, corresponding to the electronic configuration of [Xe]4f1. Electrical resistivity showed the nonmonotonic temperature dependence with a sharp resistivity maximum, concomitant with a magnetization kink at 10 K, suggesting antiferromagnetic transition. In addition, magnetoresistance showed a large angular-dependent magnetoresistance. These results imply that carrier transport in the Bi2- square net could be influenced by magnetic ordering in the Ce-O layer owing to its unique layered structure [Bi2-/(Ce2O2)2+], particularly in the form of epitaxial thin films.

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Shunsuke Shibata, Ryosuke Sei, Tomoteru Fukumura, Tetsuya Hasegawa. 2017-05-27. Magnetic and magnetotransport properties of ThCr2Si2-type Ce2O2Bi composed of conducting Bi2- square net and magnetic Ce-O layer. https://doi.org/10.1063/1.4983280

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