Тип публикации: статья из журнала
Год издания: 2011
Идентификатор DOI: 10.1016/j.jmmm.2010.11.096
Ключевые слова: Magnetic tunnel junction, High-frequency rectification, Spintronics, Absorption lines, Conducting grains, Cooperative systems, Different frequency, Frequency dependence, High frequency HF, Magnetic field dependences, Microwave radiations, Polycrystalline, Radiation frequencies, Ramified network, Rectification effects, Rectified voltage, Spin-polarized currents, Electric rectifiers, Magnetic devices, Magnetic fields, Magnetic resonance, Manganese oxide, Nanotechnology, Tunnel junctions
Аннотация: The effect of magnetically driven high-frequency rectification in a polycrystalline La0.7Ca0.3MnO3 manganite has been measured at different frequencies of microwave radiation. The magnetic field dependence of a rectified voltage has a broad peak resembling an absorption line, whose shape and position are determined by the radiationПоказать полностьюfrequency. The rectification effect in a polycrystalline manganite sample is related to a ramified network of magnetic tunnel junctions, which is formed by ferromagnetic conducting grains with insulator boundaries. The results of measurements are consistent with a model for the magneto-dependent rectification effect based on the interplay between a spin-polarized current through the tunnel junctions and magnetic resonance induced in the grains forming the junctions. (C) 2010 Elsevier B.V. All rights reserved.
Журнал: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Выпуск журнала: Vol. 323, Is. 7
Номера страниц: 1001-1005
ISSN журнала: 03048853
Место издания: AMSTERDAM
Издатель: ELSEVIER SCIENCE BV