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Software for Comparative Analysis of Diffraction-Line Broadening

  • Davor Balzar (a1) and Hassel Ledbetter (a1)


Program “Breadth” was written for analyzing diffraction-line broadening. The physically broadened line profiles are required as input. The results are calculated according to three ”simplified” integral-breadth methods: Cauchy-Cauchy, Cauchy-Gauss, and Gauss-Gauss. The program output includes volume-weighted coherent domain size and a maximum strain. Furthermore, the root-mean-square strain and both surface-weighted and volume-weighted domain sizes are calculated according to the “double-Voigt” method. This method also allows the accurate determination of both surface-weighted and volume-weighted domain-size distribution functions for specimens showing a dominant size-broadening effect, which gives more detailed information than the mere average value of coherent-domain size. Some examples for ball-milled W (shows simultaneous size-strain broadening) and NiFe2O4 (shows pronounced pure-size broadening) are included.



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