Angular dependence of magnetization in axially stressed FeBO₃ single crystals

Magnetization processes in easy-plane weak ferromagnetic FeBO3 under magnetic field H and axial pressure P applied simultaneously in basal plane of the crystal have been investigated. The absence of expected orientational phase transition on the experimental curve MH(P) has been interpreted as degeneration of two magnetic phases into one in case of no parallelism between magnetic field and the pressure. Experimental curves MH(H) at fixed pressure for different values of angle between magnetic field and pressure directions have been constructed. Correlation between the theory and the experiment one can observe in this case as well

Features of acoustic resonance in iron borate

Acoustic resonance in a weak-ferromagnetic iron borate monocrystal was investigated. It was shown that observed field dependence of positions and magnitudes of the resonance peaks can be explained within framework of the developed theory of magnetic birefringence of sound in the inhomogeneous magnetized sample

Fitting MAS NMR spectra in crystals with local disorder: Czjzek's vs. Maurer's model for 11 B and 71 Ga in polycrystalline gallium borate

A comparative analysis of the Czjzek's and Maurer's models of the joint distribution density of NMR quadrupole parameters has been carried out in view of their application to account for spectra broadening induced by local disorder in crystals. As an example of such an application, we have considered Magic Angle Spinning NMR of 11 B and 71 Ga isotopes in polycrystalline gallium borate. Computer simulations carried out using both models unambiguously show that in the case of low local disorder the Maurer's model, in contrast to the Czjzek's model, provides satisfactory fits to experimental NMR spectra

11B MAS NMR study of Ga1−xFexBO3 mixed crystals

11 B MAS NMR Local structure Local disorder. a b s t r a c t : Mixed iron-gallium borate crystals Ga 1-x Fe x BO 3 have been studied by Magic Angle Spinning (MAS) NMR of 11 B isotope. Experimental MAS NMR spectra have been computer simulated using a laboratory-developed code. The quadrupole parameters and isotropic chemical shift for 11 B are consistent with threefold-coordination of boron atoms. A detailed fitting to the experimental NMR spectra reveals the existence of a certain local disorder in Ga 1-x Fe x BO 3 crystals

Lattice-Mediated Optical Control of Magnetic Anisotropy in FeBO3

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