Control of Coercivities in (Ga,Mn)As Thin Films by Small Concentrations of MnAs Nanoclusters

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We demonstrate that low concentrations of a secondary magnetic phase in (Ga,Mn)As thin films can enhance the coercivity by factors up to ~100 without significantly degrading the Curie temperature or saturation magnetisation. Magnetic measurements indicate that the secondary phase consists of MnAs nanoclusters, of average size ~7nm. This approach to controlling the coercivity while maintaining high Curie temperature, may be important for realizing ferromagnetic semiconductor based devices.
8 pages,4 figures. accepted for publication in Appl. Phys. Lett

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Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/105568

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0512353
 http://arxiv.org/abs/cond-mat/0512353
 Applied Physics Letters 88, 022510 (2006)
 doi:10.1063/1.2162856

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arXiv