Determination of the magnetic structures of the rutile-type Cr2ReO6 and CrReO4 oxides
Oxides derived from rutile CrO2 oxide, with bi-rutile or tri-rutile crystal structures, present intriguing magnetic structures that cannot be rationalized by the Goodenough-Kanamory superexchanmge rules. Here we propose to investigate bi-rutile CrReO4 (Re5+:5d2) and tri-rutile Cr2ReO6 (Re6+:5d1) antiferromagnets that have been prepared under high-pressure conditions. The determination of the magnetic structure is of paramount importance to check a novel approach to understand the magnetic exchange interactions between Cr3+ ions when the counter-cation has a partially occupied d orbital (Re5+ or Re6+), and how the magnetic exchange interactions between Cr3+ ions change. For this purpose we ask for 2 days at D2B and 2 days at D20 to study the crystal magnetic structures and their thermal evolution across TN.
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ALONSO Jose Antonio and FERNANDEZ DIAZ Maria Teresa. (2016). Determination of the magnetic structures of the rutile-type Cr2ReO6 and CrReO4 oxides. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2464
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