anisotropic_broadening
Description: anisotropic peak broadening
We based this expression for anisotropic peak broadening caused by antiphase boundaries on work by Her, Stephens et al (Acta Cryst. B 63 561 (2007)). We found it useful for fitting magnetic Bragg peaks in layered materials with much shorter magnetic correlation lengths along c than in the ab plane (Phys. Rev. B 89 100402(R) (2014); Phys Rev. B, in press).
Expression for constant wavelength data:
lor_fwhm = C_star*((L^2)^0.5)*D_spacing Lam / (Pi*xi_z Cos(Th)) Rad;
prm xi_z 47.53024`_3.31957 min 0 max 1000
Expression for time-of-flight data:
lor_fwhm = C_star*((L^2)^0.5)*D_spacing * difc_n58 * (D_spacing^2) / (Pi*xi_z ) ;
prm xi_z 86.31282`_1.33195 min 0 max 1000
where xi_z is the correlation length along z.
anisotropic_broadening.txt · Last modified: 2022/11/03 15:08 by 127.0.0.1