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P. Granitzer, K. Rumpf, M. Reissner, H. Michor:
"Magnetic Filling of Microporous Silicon: An Interlink Between Optical and Magnetic Behavior";
ECS Transactions, 97 (2020), 7; S. 817 - 824.

In the frame of this work microporous silicon (mPSi) is filled with magnetic metals (Ni, Co) resulting in a composite system with specific magnetic properties corresponding to its branched morphology. The results are compared with mesoporous silicon (PSi) loaded with Ni nanoparticles (NPs) of comparable size. The two systems offer drastic differences in their magnetic response. Furthermore mPSi offers luminescence in the visible range, whereat this behavior is due to the small structure size in the range of a few nanometers (2 - 5 nm). The morphology of mesoporous silicon shows straight pores with a diameter up to 50 nm. Due to the different template morphology the responding magnetic behavior shows distinct properties related to the two systems, although the size of the metal deposits is in a similar size range. The Ni loaded mPSi system merges optical and magnetic properties leading to a nanocomposite appropriate for possible magneto-optical devices.

Microporous Silicon, Magnetic Filling

http://dx.doi.org/10.1149/09707.0817ecst