Pulsed laser deposition of chromium oxides thin films: chemical stabilizations by capping and doping

Carmen-Daniela Stanoi; Gabriel Socol; Carmen Ristoscu; Emanuel Axente; D. Caiteanu; Ion N. Mihailescu; Cristiana E.A. Grigorescu; Beatrice Bastide; Odile Monnereau; Laurence Tortet; T. Zhang

doi:10.1117/12.582915

21 October 2004 Pulsed laser deposition of chromium oxides thin films: chemical stabilizations by capping and doping

Carmen-Daniela Stanoi, Gabriel Socol, Carmen Ristoscu, Emanuel Axente, D. Caiteanu, Ion N. Mihailescu, Cristiana E.A. Grigorescu, Beatrice Bastide, Odile Monnereau, Laurence Tortet, T. Zhang

Author Affiliations +

Proceedings Volume 5581, ROMOPTO 2003: Seventh Conference on Optics; (2004) https://doi.org/10.1117/12.582915
Event: ROMOPTO 2003: Seventh Conference on Optics, 2003, Constanta, Romania

Abstract

The half-metallic ferromagnetic chromium dioxide (T_c = 390 K) is a prospective material for spintronics applications. We employed pulsed laser deposition (PLD) to grow thin films of various chromium oxides. The experiments have been carried out in oxygen at different dynamical pressures, using a KrF* laser source (λ = 248 nm, τ_FWHM ≥ 30 ns), various chromium oxide targets, such as CrO₃, Cr₈O₂₁ (the latter ones both pure and doped with Y and Sb respectively, for stabilization purposes) and sapphire substrates (c-cut). We optimized the laser fluence. To avoid CrO₂ reduction to Cr₂O₃ in very thin films when kept in atmospheric air, we applied a protection with gold. X-ray diffraction, electron microscopy and Raman spectroscopy evidence uniform films containing CrO₂.

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Carmen-Daniela Stanoi, Gabriel Socol, Carmen Ristoscu, Emanuel Axente, D. Caiteanu, Ion N. Mihailescu, Cristiana E.A. Grigorescu, Beatrice Bastide, Odile Monnereau, Laurence Tortet, and T. Zhang "Pulsed laser deposition of chromium oxides thin films: chemical stabilizations by capping and doping", Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); https://doi.org/10.1117/12.582915

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