Investigating Spin Order in a New Perovskite with Multiple Cation Order
A new perovskite of formula CaMnFeMoO6, with columnar A-site and rock-salt B-site cation order, has been synthesised using high-pressure high-temperature techniques. From magnetisation measurements, magnetic order is evidenced with TC of 290 K. However, magnetisation has a maximum at 200 K and subsequently decreases with lowering temperature, suggesting that this new molybdate has a significantly different A-site magnetic structure than is seen in the related CaMnFeReO6. An additional low temperature magnetic transition is observed in ZFC magnetisation measurements, which is possibly a signature of a spin reorientation, as observed in Mn2FeReO6 and Mn2(Fe0.8Mo0.2)MoO6. Two days of beamtime on D20 are requested to determine the spin structures of a 100 mg sample of CaMnFeMoO6 as a function of temperature between 2 and 350 K. These results will be essential to understand the magnetic properties of this material.
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MCNALLY Graham; KIM Minu and RITTER Clemens. (2021). Investigating Spin Order in a New Perovskite with Multiple Cation Order. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2829
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