Elena V. Mostovshchikova, Sergey V. Naumov, Timofey N. Pavlov, Anton Stepanov
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Abstract
The features of the charge subsystem of the Pr0.5Nd0.5BaMn2O6 single crystal with partial A-site ordering are investigated. The manganite is a mixture of a phase with a tetragonal structure (43%) with a high degree of A-site ordering and a disordered phase with a cubic structure (57%). Anisotropy of the optical properties and electrical resistance in the crystallographic ab plane and along the c axis was found. The anisotropy manifests itself as a metal–insulator transition near T≈TC = 150 K in the ab plane and a semiconductor character of the resistance along c above and below TC. The magnetoresistance effect was revealed, which in a field of 1 T reaches 65% in the ab plane and 45% along the c axis near TC and about 40% at low temperatures.
期刊介绍：
The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.
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