Synthesis, structural and magnetic properties of ludwigite Mn-=SUB=-1.32-=/SUB=-Ni-=SUB=-0.85-=/SUB=-Cu-=SUB=-0.83-=/SUB=-BO-=SUB=-5-=/SUB=-

نویسندگان

چکیده

Single crystals of Mn 1.3 2Ni 0.85 Cu 0.83 BO 5 with the ludwigite structure were obtained by solution-melt method during spontaneous crystallization. The concentration copper, manganese and nickel ions was determined transmission microscopy. Manganese are included in compounds divalent trivalent states. study temperature field dependences showed that we have several magnetic transitions. first transition, associated ferrimagnetic ordering moments parts ions, observed region 50 K. In 25 K, a second transition is observed. Substitution for copper better disorder competition exchange interactions, which leads to division system into subsystems ordered at different temperatures. Keywords: ludwigites, interface indirect interactions.

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ژورنال

عنوان ژورنال: Fizika tverdogo tela

سال: 2022

ISSN: ['0367-3294', '1726-7498']

DOI: https://doi.org/10.21883/pss.2022.11.54200.425