SIMULATION AND EXPERIMENTAL ANALYSIS OF CRYSTALLITE SIZE AND MACROSTRAIN OF HEMATITE (Fe2O3) NANOPARTICLES USING WILLIAMSON-HALL METHOD. FJS [Internet]. 2024 Jun. 30 [cited 2025 Sep. 17];8(3):572-80. Available from: http://162.254.38.185/index.php/fjs/article/view/2655