Spin state crossover in

NV Kazak, MS Platunov, YV Knyazev, MS Molokeev… - Physical Review B, 2021 - APS
We have investigated the spin and oxidation states of Co in Co 3 BO 5 using x-ray magnetic
circular dichroism (XMCD) and dc magnetic susceptibility measurements. At low …

Ludwigites: From natural mineral to modern solid solutions

S Sofronova, I Nazarenko - Crystal Research and Technology, 2017 - Wiley Online Library
Ludwigites is a type of oxyborates compounds with BO3 groups, which have low‐
dimensional elements: stairs, zigzag walls, tapes. Such structural features influence on the …

Structural Transition and Pair Formation in

M Mir, RB Guimarães, JC Fernandes, MA Continentino… - Physical review …, 2001 - APS
We observe for the first time a structural phase transition in the oxyborate Fe 3 O 2 BO 3
which occurs along three leg ladders present in this material. X-ray diffraction shows that this …

Magnetism and charge order in the ladder compound

DC Freitas, CPC Medrano, DR Sanchez, MN Regueiro… - Physical Review B, 2016 - APS
There are two known ludwigites containing a single transition metal element, Fe 3 O 2 BO 3
and Co 3 O 2 BO 3. The structure of these materials has low-dimensional units in the form of …

Magnetic structure of Cu2MnBO5 ludwigite: thermodynamic, magnetic properties and neutron diffraction study

E Moshkina, C Ritter, E Eremin… - Journal of Physics …, 2017 - iopscience.iop.org
We report on the thermodynamic, magnetic properties and the magnetic structure of
ludwigite-type Cu 2 MnBO 5. The specific heat, low-field magnetization and paramagnetic …

Structure and magnetism of homometallic ludwigites: versus

DC Freitas, MA Continentino, RB Guimaraes… - Physical Review B …, 2008 - APS
We present an extensive study of the structural, magnetic, and thermodynamic properties of
the oxyborate Co 3 O 2 BO 3. This is carried out through x-ray diffraction, static and dynamic …

Magnetic phase diagram for

F Damay, J Sottmann, F Lainé, L Chaix, M Poienar… - Physical Review B, 2020 - APS
The heterometallic ludwigite system Fe 3− x Mn x BO 5, recently investigated for its
ferroelectric properties, has been studied using synchrotron and neutron diffraction …

Spin-state ordering and intermediate states in the mixed-valence cobalt oxyborate with spin crossover

E Granado, CW Galdino, BD Moreno, G King… - Physical Review B, 2024 - APS
Spin-state ordering—a periodic pattern of ions with different spin-state configurations along
a crystal lattice—is a rare phenomenon, and its possible interrelation with other electronic …

Partial magnetic ordering and crystal structure of the ludwigites and

DC Freitas, MA Continentino, RB Guimaraes… - Physical Review B …, 2009 - APS
We present an extensive study of the structural, magnetic, and thermodynamic properties of
the two heterometallic oxyborates: Co 2 FeO 2 BO 3 and Ni 2 FeO 2 BO 3. This has been …

Nonmagnetic ions enhance magnetic order in the ludwigite

CPC Medrano, DC Freitas, DR Sanchez, CB Pinheiro… - Physical Review B, 2015 - APS
The ludwigite Co 5 Sn (O 2 BO 3) 2 was studied using x-ray diffraction, Mössbauer
spectroscopy, and magnetic and thermodynamic measurements. This material belongs to a …