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Magnetic structures of the low temperature phase of Mn₃(VO₄)₂ - Towards understanding magnetic ordering between adjacent Kagome layers

Clemens, O.; Rohrer, J.; Nenert, G.

Abstract:
In this article we report on a detailed analysis of the magnetic structures of the magnetic phases of the low temperature (lt-) phase of Mn3(VO4)2 ([double bond, length as m-dash]Mn3V2O8) with a Kagomé staircase structure determined by means of powder neutron diffraction. Two magnetic transitions were found at ∼25 K (HT1 phase, Cmc′a′) and ∼17 K (LT1 phase, Pmc′a′), in excellent agreement with previous reports. The LT1 phase is characterized by commensurate magnetic ordering of the magnetic moments on two magnetic sites of the Mn1a/b (2a + 2d) and Mn2 (8i) ions of the nuclear structure (where for the latter site two different overall orientations of magnetic moments within the ab-plane (Mn2a and Mn2b) can be distinguished. This results in mainly antiferromagnetic interactions between edge-sharing Mn-octahedra within the Kagomé planes. The HT1 phase is characterised by strong spin frustration resulting from the loss of ordering of the magnetic moments of Mn2a/b ions along the b-axis. Both magnetic structures are in agreement with the previously reported ferrimagnetic properties of lt-Mn3(VO4)2 and shed light on the magnetic phase dia ... mehr


Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1039/c5dt03141a
ISSN: 1477-9226
URN: urn:nbn:de:swb:90-531723
KITopen ID: 1000053172
HGF-Programm 43.22.01; LK 01
Erschienen in Dalton Transactions
Band 45
Heft 1
Seiten 156-171
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