Crystal structure and magnetic properties of Mn substituted ludwigite Co3O2BO3

Structure and magnetism of copper-substituted cobalt ludwigite Co3O2BO3

“…One can see that the oxygen octahedral for the site 4 is less distorted comparing the others. It is interesting to note that namely this position is the most preferable for occupation in the cases of different substitution ions: Fe [6,10], Mn [12] and Cu (present work). …”

“…It is the same position 4 (4h) as in the case of iron [10] or manganese [12] ions. The interion distances were defined and the calculations of electric field gradient created by the distorted oxygen octahedral have been made.…”

Magnetization pole reversal of ferrimagnetic ludwigites Mn3−xNixBO5

“…It was shown that the magnetic properties of the ludwigites [5,6]. Along with the formation of the antiferromagnetic phase, one can observe traces of a spin-glass-like subsystem even at low concentrations of Mn 2+ and Mn 3+ cations.…”

“…However, with a further increase in the Mn concentration, the long-range magnetic order recovers. In the antiferromagnetic phase, diamagnetic anomalies of susceptibility were observed upon sample heating after zero magnetic field precooling (ZFC) [5,6].…”

Magnetism and structure of Ni2MnBO5 ludwigite

“…(Me1, Me2 -transition metals) with a ludwigite structure are the members of a large class of compounds have very interesting features, such as charge ordering, existence of several magnetic subsystems ordered at different temperatures and in perpendicular directions, reversal magnetization, spin-glass state [1][2][3][4][5]. Due to these extraordinary properties oxyborates with a ludwigite structure are promising materials for possible applications.…”