Figure 5.

Load–displacement curve and thickness dependence of surface hardness of BaTiO3films.P-h curves of BaTiO3 films on (a) Cu and (b) SUS substrates for a load force of 900 μN and the thickness dependence of surface hardness of the films on (c) Cu and (d) SUS substrates.

Kim et al. Nanoscale Research Letters 2012 7:264   doi:10.1186/1556-276X-7-264
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