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arXiv · 0712.2410

Magnetic properties of HO2 thin films

Nicolas Hadacek·Alexandre Nossov·Laurent Ranno·Pierre Strobel·Rose-Marie Galéra
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Abstract

We report on the magnetic and transport studies of hafnium oxide thin films grown by pulsed-laser deposition on sapphire substrates under different oxygen pressures, ranging from 10-7 to 10-1 mbar. Some physical properties of these thin films appear to depend on the oxygen pressure during growth: the film grown at low oxygen pressure (P ~= 10-7 mbar) has a metallic aspect and is conducting, with a positive Hall signal, while those grown under higher oxygen pressures (7 x 10-5 <= P <= 0.4 mbar) are insulating. However, no intrinsic ferromagnetic signal could be attributed to the HfO2 films, irrespective of the oxygen pressure during the deposition.

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Nicolas Hadacek, Alexandre Nossov, Laurent Ranno, Pierre Strobel, Rose-Marie Galéra. 2007-12-14. Magnetic properties of HO2 thin films. https://doi.org/10.1088/0953-8984%2F19%2F48%2F486206

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