Abstract: Aims: These considerations motivated our present study to reveal the details and explain the mechanism of the field-driven destruction of long-range magnetic order in favor of a spin-glass-like state in copper ludwigites.
Methods: The magnetization M of single crystalline samples were measured on the PPMS-9 device within a temperature range 2KResults: Here we presented the investigations of single crystals of Cu₂GaBO₅ and Cu₂AlBO₅ oxyborates with ludwigite. The distinctive features of the investigated structures are the selective distribution of Cu, Ga and Al cations. The magnetic properties of the investigated homomagnetic copper ludwigites are discussed in comparison with known heterometallic bimagnetic ludwigites.
Conclusions: The analysis of the phonon contribution to the specific heat was performed, that allowed to separate the magnetic contribution to the specific heat for both compounds.

Biography: Rushana Eremina is a Professor of Departments of physics at Kazan State University and the Head of the Laboratory of Radio Spectroscopy of Dielectrics (Kazan, Russia). Her research interests include magnetic resonance, phase separation, magnetic susceptibility, multiferroics, quasi-one dimensional magnets, anisotropic exchange interaction, nanocrystalline materials and glasses. She has published more than about 87 refereed journal papers with an H-index of 15 and 947+ citations. She has also been a reviewer of many journals, such as "Journal of Alloys and Compounds", "Journal of Magnetism and Magnetic Materials" Applied Magnetic Resonance" etc.