Uniform chemical pressure effect in solid solutions Ba1-xSrxFe2As2and Sr1−xCaxFe2As2
Uniform chemical pressure effect in solid solutions Ba1-xSrxFe2As2and Sr1−xCaxFe2As2
The effect of alkaline earth substitution on structural parameters was studied in high-quality single crystals of Ba1−xSrxFe2As2 and Sr1−xCaxFe2As2 grown by the self-flux method. The results of single-crystal and powder x-ray diffraction measurements suggest a continuous monotonic decrease of both a- and c-axis lattice parameters, the c/a tetragonal ratio, and …