Front Matter -- Application of Mössbauer Spectroscopy to Energy Materials / Pierre-Emmanuel Lippens, Jean-Claude Jumas, Josette Olivier-Fourcade -- Mössbauer Spectral Studies of Iron Phosphate Containing Minerals and Compounds / Gary J Long, Fernande Grandjean -- Mössbauer Spectroscopic Investigation of Fe-Based Silicides / Xiao Chen, Junhu Wang, Changhai Liang -- Mössbauer Spectroscopy of Catalysts / Károly Lázár -- Application of Mössbauer Spectroscopy in Studying Catalysts for CO Oxidation and Preferential Oxidation of CO in H 2 / Kuo Liu, Junhu Wang, Tao Zhang -- Application of 57 Fe Mössbauer Spectroscopy in Studying Fe-N-C Catalysts for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cells / Xinlong Xu, Junhu Wang, Suli Wang, Gongquan Sun -- 197 Au Mössbauer Spectroscopy of Thiolate-protected Gold Clusters / Norimichi Kojima, Yasuhiro Kobaqyashi, Makoto Seto -- 197 Au Mössbauer Spectroscopy of Gold Mixed-Valence Complexes, Cs 2 [ Au I X 2 ][ Au III Y 4 ](X, Y = Cl, Br, I) and [ NH 3 (CH 2) n NH 3 ] 2 [( Au I I 2 )( Au III I 4) (I 3) 2 ] (n = 7, 8) / Norimichi Kojima, Yasuhiro Kobaqyashi, Makoto Seto -- Temperature- and Photo-Induced Spin-Crossover in Molecule-Based Magnets / Hiroko Tokoro, Kenta Imoto, Shin-ichi Ohkoshi -- Developing a Methodology to Obtain New Photoswitchable Fe( II) Spin Crossover Complexes / Varun Kumar, Yann Garcia -- 57 Fe Mössbauer Spectroscopy as a Prime Tool to Explore a New Family of Colorimetric Sensors / Li Sun, Weiyang Li, Yann Garcia -- Index