An investigation into complex inorganic materials with Mössbauer spectroscopy [Elektronische Ressource] / Verena Jung

An investigation into complex inorganicmaterials with Mossbauer¨ spectroscopyDissertationzur Erlangung des Grades”Doktor der Naturwissenschaften”im Promotionsfach Anorganische Chemieam Fachbereich Chemie, Pharmazie und Geowissenschaftender Johannes Gutenberg-Universit¨at Mainzvorgelegt vonVerena Junggeboren in Limburg / LahnMainz, 2008Contents1 Introduction 12 Experimental and calculational details 172.1 Preparationofthemodelglas ....................... 172.2 Mo¨sbauerspectroscopy............... 182.3 EXAFS.................................... 192.4 Theoreticalinvestigation................... 212.5 Diffusion................................ 213 Results and discussion of the Mos¨ sbauer and EXAFS data 233.1 Introduction.................................. 233.2 Influences of varying oxygen partial pressure on the chemistry of tin insilicate glasses . ................................ 253.3 Influences of varying treatment duration in reducing atmospheres on thechemistry of tin in silicate glasses ...................... 292+ 4+3.4 Investigation on the Sn /Sn ratio in different probing depths aftertreatment in N atmosphere......................... 3423.5 Influences of varying treatment duration in oxygen atmosphere on thechemistry of tin in silicate glasses ...................... 373.6 StudyoftheadditionofCaOtothemodelglas ......... 423.7 Summary................................... 44 Coordination and bonding of tin in silicate glasses 454.1 Introduction.