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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2018

Evolving spin periodicity and lock-in transition in the frustrated ordered ilmenite-type β-Mn 2 InSbO 6

Résumé

Polar magnets are promising materials for new applications as multiferroics or in spintronics. In double corundum-related oxides, the cation ordering imposes a polar structure and the use of high pressure facilitates the insertion of magnetic cations into the compounds. Here we present the high-pressure synthesis of a new polar and ferrimagnetic corundum derivative Mn 2 InSbO 6 , which adopts the ordered-ilmenite-type structure. Neutron powder diffraction reveals that the high-temperature nearly collinear ferrimagnetic phase evolves to an incommensurate helical structure with k δ = [0 0 k z ] propagation vector, which then locks to the commensurate value of k z = 1/8. This complex magnetic behavior is likely to be related to magnetic frustration and the polar nature of the ordered double corundum structure.
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Dates et versions

hal-02292386 , version 1 (19-09-2019)

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Ángel M Arévalo-López, Elena Solana-Madruga, Eugenia P Arévalo-López, Dmitry Khalyavin, Michal Kepa, et al.. Evolving spin periodicity and lock-in transition in the frustrated ordered ilmenite-type β-Mn 2 InSbO 6. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2018, 98 (21), pp.214403. ⟨10.1103/PhysRevB.98.214403⟩. ⟨hal-02292386⟩
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