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Post‐spinel transition and magnetic properties of LiMn 2 O 4
Author(s) -
Yamaura K.,
Huang Q.,
Zhang L.,
Takada K.,
Baba Y.,
Nagai T.,
Matsui Y.,
Kosuda K.,
TakayamaMuromachi E.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200672566
Subject(s) - isostructural , spinel , orthorhombic crystal system , chain (unit) , crystallography , magnetic moment , materials science , condensed matter physics , anisotropy , magnetic anisotropy , chemistry , crystal structure , magnetization , physics , magnetic field , metallurgy , quantum mechanics , astronomy
A post spinel transition of LiMn 2 O 4 was recently found at 6 GPa. The high‐pressure form crystallizes into a double chain‐type structure, isostructural with CaFe 2 O 4 (orthorhombic; Pnma). The orthorhombic unit cell parameters were found anisotropically dependent on the heating condition; it varies ∼0.5% while less than ∼0.1% along the chain direction, probably reflecting nature of the anisotropic structure basis. The form is magnetic due to the chain arrangement of the Mn magnetic moments and a magnetically glassy feature was found at ∼10 K being similar with what was found for the spinel‐type LiMn 2 O 4 at ∼25 K. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)