Magnetism of LiMn2O4 manganite in structurally ordered and disordered states / Chukalkin Y.G., Teplykh A.E., Pirogov A.N., Kellerman D.G. // Physics of the Solid State. - 2010. - V. 52, l. 12. - P. 2545-2551.

ISSN:

10637834

Type:

Article

Abstract:

The specific features of the crystal structure and the magnetic state of stoichiometric lithium manganite in the structurally ordered Li[Mn2]O4 and disordered Li1 - δMnδ[Mn2 - δLiδ]O4 (δ = 1/6) states have been investigated using neutron diffraction, X-ray diffraction, and magnetic methods. The structurally disordered state of the manganite was achieved under irradiation by fast neutrons (Eeff ≥ 1 MeV) with a fluence of 2 × 1020 cm-2 at a temperature of 340 K. It has been demonstrated that, in the initial sample, the charge ordermpanied by orthorhombic distortions of the cubic spinel structure, and the long-range aning of manganese ions of different valences arises at room temperature, which is accotiferromagnetic order with the wave vector k = 2π/c(0, 0, 0.44) is observed at low temperatures. It has been established that the structural disordering leads to radical changes in the structural and magnetic states of the LiMn2O4 manganite. The charge ordering is destroyed, and the structure retains the cubic symmetry even at a temperature of 5 K. The antiferromagnetic type of ordering transforms into ferrimagnetic ordering with local spin deviations in the octahedral sublattice due to the appearance of intersublattice exchange interactions. © 2010 Pleiades Publishing, Ltd.

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DOI:

10.1134/S1063783410120164

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https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650376895&doi=10.1134%2fS1063783410120164&partnerID=40&md5=8a986e63245a744e7cd490af103ff383

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650376895&doi=10.1134%2fS1063783410120164&partnerID=40&md5=8a986e63245a744e7cd490af103ff383
Affiliations	Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof'i Kovalevskoi 18, Yekaterinburg 620990, Russian Federation; Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg 620990, Russian Federation
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Correspondence Address	Chukalkin, Y. G.; Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof'i Kovalevskoi 18, Yekaterinburg 620990, Russian Federation; email: chukalkin@imp.uran.ru
Language of Original Document	English
Abbreviated Source Title	Phys. Solid State
Source	Scopus