Comment on and complement to "Effect of calcination temperature on the degree of polymorphic transformation in Y2SiO5 nanopowders synthesized by sol–gel method" by Z.S. Khan et al. [Journal of Non-Crystalline Solids 432 (2016) 540–544].

The correct values of crystallites size of Y 2 SiO 5 powder are presented as a correction of data published in the commented paper. Additionally, the description of the size-induced phase transition is given. • The size-induced phase transtion is discovered. • The correct values of crystallite sizes have been presented. • The correction of errors in the previously published paper is presented. [ABSTRACT FROM AUTHOR]