The boracites with general formula M₃B₇O₁₃X (M=divalent metal, X=Cl,Br,I), shortly denoted as M-X, are among the first known multiferroic materials. They exhibit a sequence of transitions from the high temperature paraelectric cubic phase to ferroelectric orthorhombic, monoclinic, trigonal phases, and finally to a monoclinic phase at low temperatures, where both ferroelectric and magnetic orders coexist. The reports on the lattice dynamics of boracites have been restricted so far to the paraelectric cubic phase, the main problem with other phases being the coexistence of twin variants with different crystallographic and polarization orientation. It will be  demonstrated on the example of  Co₃B₇O₁₃Cl (Co-Cl), Co₃B₇O₁₃Br (Co-Br) and Ni₃B₇O₁₃Br (Ni-Br)  that using Raman microscopy imaging one can visualize the twin variants, obtain Raman spectra from untwined domains in exact scattering configurations, determine the Raman mode symmetries, and assign the Raman lines to definite atomic motions. The variations of the ferroelectric domains and Raman spectra through crystallographic transitions will also be discussed.

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