Structural behavior of laser-irradiated γ-Fe<sub>2</sub>O<sub>3</sub> nanocrystals dispersed in porous silica matrix : γ-Fe<sub>2</sub>O<sub>3</sub> to α-Fe<sub>2</sub>O<sub>3</sub> phase transition and formation of ε-Fe<sub>2</sub>O<sub>3</sub>
Science and technology of advanced materials