6533b823fe1ef96bd127ea6f

RESEARCH PRODUCT

Crystal growth, structure, magnetic properties and theoretical exchange interaction calculations of Cu2MnBO5

Katerina MedjanikS. N. SofronovaAlexey VeligzhaninVadim KsenofontovI. I. NazarenkoE. M. MoshkinaE. M. MoshkinaYu. V. SeryotkinL. N. BezmaternykhSergej A. Nepijko

subject

Materials scienceMagnetismExchange interactionCrystal growth02 engineering and technologyengineering.material021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesMagnetic susceptibilityElectronic Optical and Magnetic MaterialsCrystalNuclear magnetic resonanceChemical physicsPhase (matter)0103 physical sciencesengineering010306 general physics0210 nano-technologyLudwigiteMonoclinic crystal system

description

Single crystals of ludwigite Cu2MnBO5 were synthesized by flux growth technique. The detailed structural and magnetic characterizations of the synthesized samples have been carried out. The cations composition of the studied crystal was determined using X-ray diffraction and EXAFS technique, the resulting composition differ from the content of the initial Mn2O3–CuO components of the flux. Magnetic susceptibility measurements and the calculations of the exchange integrals in frameworks of indirect coupling model revealed that monoclinic distortions strongly affect exchange interactions and appearance of magnetic ordering phase at the temperature T=93 K. The hypothesis of the existence of several magnetic subsystems was supposed.

https://doi.org/10.1016/j.jmmm.2016.07.019