Anisotropic magnetism and spin-dependent transport in Co nanoparticle embedded ZnO thin films
作者： D. Y. Li , Y. J. Zeng , L. M. C. Pereira , D. Batuk , J. Hadermann
DOI: 10.1063/1.4815877
关键词:
摘要: Oriented Co nanoparticles were obtained by ion implantation in crystalline ZnO thin films grown pulsed laser deposition. Transmission electron microscopy revealed the presence of elliptically shaped precipitates with nanometer size, which are embedded films, resulting anisotropic magnetic behavior. The low-temperature resistance Co-implanted follows Efros-Shklovskii type variable-range-hopping. Large negative magnetoresistance (MR) exceeding 10% is observed a field 1 T at 2.5 K and MR survives up to 250 K (0.3%). reveals hysteresis as well anisotropy that correlate properties, clearly demonstrating spin-dependent transport.
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