Match! version 4.2 Build 334 has been released

September 4, 2025

The new Match! version 4.2 Build 334 has become available today. In this new release, the automatic profile fitting has been improved, resulting in peak parameters (2theta, intensity and FWHM values) being determined more accurately, even in case of mixed radiation (alpha1+2). Further improvements have been implemented as well, and all known bugs have been fixed.

Here is the full list of improvements in the new version:

• The analysis of peak broadening and hence crystallite size estimation has been improved.
• Peak searching and profile fitting have been improved, especially for "mixed" wavelengths (alpha1/2): The alpha2 contribution (peak) is now added automatically and refined along with the corresponding alpha1 peak.
• Profile fitting is now run automatically after peak searching by default.
• Automatic profile fitting has been improved: Match! will no longer use the user-selected parameters to be fitted (2theta, intensity, FWHM) as in earlier versions but refine its own parameter combinations in a multiple step procedure.
• On the "Raw data" page of the "Options" window, the alternating options "Peak searching / Method: Normal" and "Profile fitting" have been replaced by a single option (checkable box) "Run profile fitting after peak searching". Due to this, the "normal" peak searching will always be used, with the option to automatically refine the peak data by profile fitting afterwards.
• The previous peak searching option "Add alpha2 peaks automatically" on the "Options / Raw data" tab has been replaced by the more general option "Operate alpha2 peaks automatically" (active by default).
• Match! now supports a GSAS-style powder diffraction file format (.raw, .gsas) as input.
• All known bugs have been fixed:
  • The option "Quant. analysis / Automatically switch over to the pie chart graphics after performing a quantitative analysis" could not be turned off.
  • A bug that might cause Match! to crash or display a "license error" message when running/finishing a profile fitting search-match calculation using an ICDD PDF database has been fixed.
  • An issue causing the Rwp value to increase during profile fitting has been resolved.
  • A bug affecting the alpha2-stripping when peaks are present has been resolved.

Match! users should check their update permission time (e.g. in "Help / About Match!") and then download and install the new version from here.

Match! Demo Version and Information

If you are new to Match! and would like to learn more about it, please visit the Match! web page. where you can also download a full-featured (time-limited) demonstration version free-of-charge.