Symmetry Switching of Negative Thermal Expansion by Chemical Control

• DOI: 10.1021/jacs.5b13192
• Publication Date: 2016-03-01T00:46:21Z
• Authors: Mark S. Senn; Claire A. Murray; Xuan Luo; Lihai Wang; Fei-Ting Huang; Sang-Wook Cheong; Alessandro Bombardi; Chris Ablitt; Arash A. Mostofi; Nicholas C. Bristowe
• Keywords: General Chemistry; 02 engineering and technology; 01 natural sciences; 0104 chemical sciences; 11000/13; 11000/12; 11000/11; QD473; 03 Chemical Sciences; 0210 nano-technology

AbstractPolycrystalline samples of the layered perovskite Ca3‐xSrxMn2O7 (x = 0—2) are prepared by firing stoichiometric amounts of CaCO3, SrCO3, and MnO2 in an O2 stream (1340—1650 °C).