Persistent Magnetic Correlations above TN in the Frustrated FCC Lattices Ba2MnMO6 (M=W, Te)
We have used a combination of magnetic susceptibility, neutron scattering and muon spin relaxation measurements to examine the magnetic properties of the frustrated lattices of the cubic double perovskites Ba2MnMO6 (M=W, Te) These compound maintain Fm-3m symmetry to 2 K, as identified using neutron diffraction data, with Mn/M cations ordered in a rock salt manner across the octahedral sites of the perovskite structure. The S=5/2, L=0 Mn2+ cation introduces no orbital anisotropy into the system and makes them ideal candidates to test ideas of frustration. Muon spin relaxation and inelastic neutron scattering measurements reveal the presence of a short-range correlated magnetic state above TN in both compounds. We will use D7 to measure diffuse magnetic scattering in order to characterize the short-range corelated state, and investigate how it is linked to the magnetically ordered state.
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CUSSEN Edmund; MANGIN-THRO Lucile; MUSTONEN Otto; PUGHE Charlotte and H. C. Walker. (2021). Persistent Magnetic Correlations above TN in the Frustrated FCC Lattices Ba2MnMO6 (M=W, Te). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-32-909
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