Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information

Supporting information of the article Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33).Supplementary material for: [https://vinar.vin.bg.ac.rs/handle/123456789/9936

Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)

Mayenite (Ca12Al14O33) samples have been synthesized in ambient air, argon, and nitrogen atmospheres to vary the defect chemistry and to investigate its role in thermal conductivity. Highly dense sintered pellets (SEM) were obtained through spark plasma sintering and the X-ray diffractograms revealed predominantly mayenite phase with the presence of a minor amount of secondary phases. Thermal conductivity was measured for the sintered samples and it was observed that mayenite synthesized in nitrogen atmosphere exhibited a colossal value of 579 Wm-1K-1 at room temperature close to that of cubic-BN, comparable with that of metals.Supplementary material: [https://vinar.vin.bg.ac.rs/handle/123456789/9937