TY - JOUR
T1 - Long- and short-range magnetism in the frustrated double perovskite Ba2MnWO6
AU - Mutch, Heather
AU - Mustonen, Otto
AU - Walker, Helen C.
AU - Baker, Peter J.
AU - Stenning, Gavin B.G.
AU - Coomer, Fiona C.
AU - Cussen, Edmund J.
N1 - Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/1/27
Y1 - 2020/1/27
N2 - The structural and magnetic properties of the face-centered-cubic double perovskite Ba2MnWO6 were investigated using neutron powder diffraction, DC magnetometry, muon spin relaxation, and inelastic neutron scattering. Ba2MnWO6 undergoes type II long-range antiferromagnetic ordering at a Néel temperature of 8(1) K with a frustration index, f ≈ 8. Inelastic neutron scattering was used to identify the magnetic coupling constants J1 and J2, which were found to equal -0.080 and -0.076 meV, respectively. This indicates that both of the magnetic coupling constants are antiferromagnetic with similar magnitudes, which is in contrast to other known 3d metal double perovskites of the form Ba2MWO6. Above the Néel temperature, muon spin-relaxation measurements and inelastic neutron-scattering techniques identify a short-range correlated magnetic state that is similar to that observed in the archetypical face-centered-cubic lattice antiferromagnet MnO.
AB - The structural and magnetic properties of the face-centered-cubic double perovskite Ba2MnWO6 were investigated using neutron powder diffraction, DC magnetometry, muon spin relaxation, and inelastic neutron scattering. Ba2MnWO6 undergoes type II long-range antiferromagnetic ordering at a Néel temperature of 8(1) K with a frustration index, f ≈ 8. Inelastic neutron scattering was used to identify the magnetic coupling constants J1 and J2, which were found to equal -0.080 and -0.076 meV, respectively. This indicates that both of the magnetic coupling constants are antiferromagnetic with similar magnitudes, which is in contrast to other known 3d metal double perovskites of the form Ba2MWO6. Above the Néel temperature, muon spin-relaxation measurements and inelastic neutron-scattering techniques identify a short-range correlated magnetic state that is similar to that observed in the archetypical face-centered-cubic lattice antiferromagnet MnO.
UR - http://www.scopus.com/inward/record.url?scp=85082647462&partnerID=8YFLogxK
UR - https://doi.org/10.48550/arXiv.1910.03963
U2 - 10.1103/PhysRevMaterials.4.014408
DO - 10.1103/PhysRevMaterials.4.014408
M3 - Article
AN - SCOPUS:85082647462
SN - 2475-9953
VL - 4
JO - Physical Review Materials
JF - Physical Review Materials
IS - 1
M1 - 014408
ER -