Figure 4.

Experimental and fitted Raman spectrum and volume fraction of grain boundaries and hydrogen content. (a) Experimental (open circles) and fitted (solid curve) Raman spectrum of a representative sample with RH= 98.2%. (b) Volume fraction of grain boundaries and hydrogen content as a function of RH.

Wen et al. Nanoscale Research Letters 2014 9:303   doi:10.1186/1556-276X-9-303
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