Magnetic properties of HO2 thin films

Details Magnetic properties of HO2 thin films Magnetic properties of HO2 thin films

2007-12-14

arxiv.org/abs/0712.2410v1

Journal of Physics Condensed Matter 19, 48 (2007) 486206

Physics

Condensed Matter

Strongly Correlated Electrons

12

Scientific paper

10.1088/0953-8984/19/48/486206

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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