Structural and Magnetic Characterization of Ni2MnBO5 ludwigite
Evgeniya Moshkina, Svetlana Sofronova, Alexey Veligzhanin, Maxim, Molokeev, Ilya Nazarenko, Evgeniy Eremin, Leonard Bezmaternykh
TL;DR
This study synthesizes Ni2MnBO5 ludwigite crystals and thoroughly characterizes their structure and magnetism, revealing strong antiferromagnetic interactions and a magnetic phase transition at 85 K.
Contribution
It provides detailed structural and magnetic data on Ni2MnBO5, including composition analysis and magnetic behavior, which were previously unreported.
Findings
Strong antiferromagnetic interactions identified
Magnetic ordering phase observed at 85 K
Composition differs from initial flux components
Abstract
Single crystals of ludwigite Ni2MnBO5 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 is differ from the content of the initial Mn2O3 - CuO components of flux. Magnetic susceptibility measurements and the calculations of the exchange integrals in frameworks of indirect coupling model revealed strong antiferromagnetic interactions and appearance of magnetic ordering phase at the temperature T=85 K. The hypothesis of the existence of several magnetic subsystems was supposed.
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