Magnetic Field Control of Structural Perfection and Diffraction Properties of FeBO₃ Single Crystals

In this work, high-resolution triple-crystal X-ray diffractionand reciprocal space mapping were applied to study the effect of magnetoelasticinteractions on the structural perfection and diffraction propertiesof magnetically ordered iron borate crystals. It was established thatthe presence of magnetic domains with different orientation of magnetizationand near-surface magnetism effect in FeBO3 leads to theappearance of disordered areas in crystals and slight changes in thelattice parameters. This is affected in the broadening or splittingof the reciprocal lattice point and diffraction properties of thecrystal. An applied weak external magnetic field alters the domainstructure and significantly improves the diffraction characteristicsof FeBO3 crystals. This effect is important for practicalapplications of iron borate crystals, including the use of these crystalsas X-ray modulators. Itwas established that the presence of magnetic domainsand near-surface magnetism effect in FeBO3 leads to theappearance of disordered areas in crystals and slight changes in thelattice parameters. This is affected in the broadening or splittingof the reciprocal lattice point and diffraction properties of thecrystal. An applied weak external magnetic field alters the domainstructure and significantly improves the diffraction characteristicsof FeBO3 crystals.