Transformation of structure and magnetic properties of Cu2MnBO5 under partial Mn3+ → Fe3+ substitution

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:464

Article

Moshkina, E. M.^1,2  Platunov, M. S.¹  Seryotkin, Yu. V.^3,4  Bovina, A. F.¹  Eremin, E. V.^1,5  Sofronova, S. N.¹  Bezmaternykh, L. N.¹ 

[1] RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

[2] Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia

[3] RAS, SB, VS Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia

[4] Novosibirsk State Univ, Novosibirsk 630090, Russia

[5] Siberian Fed Univ, Krasnoyarsk 660041, Russia

关键词: Ludwigites;    Crystal growth;    Ferrimagnets;    Quasi-low-dimensional structure;    Magnetic phase transitions;   

DOI  :  10.1016/j.jmmm.2018.05.021

来源: Elsevier

【 摘 要 】

Single crystals of Fe-substituted Cu(2)Mn(1-x)FexBO(5) ludwigites have been synthesized using flux technique (x = 0.2, 0.4, 0.5 - in the initial flux system). Structural properties of the synthesized compounds were studied by the single crystal and powder X-ray diffraction analysis. Obtained results were analyzed in the relationship with parent compound Cu2MnBO5. It was revealed that the type of monoclinic distortions of Fe-substituted ludwigites is different from the structure of Cu2MnBO5. The real cation composition and local structure of Cu(2)Mn(1-x)FexBO(5) ludwigites were studied using XANES and EXAFS techniques, respectively. Analysis of field and thermal dependencies of magnetization showed a high dependence of the magnetic properties of these ludwigites on x with changing the type of magnetic ordering.

【 授权许可】

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