Influence of A-site ionic radii on the magnetic structure of charge-orderedLa0.5Ca0.5−xSrxMn

Diffuse neutron scattering study of magnetic correlations in half-dopedLa0.5Ca0.5−xSrxDhiman1, Das2, Mittal3 et al. 2010Phys. Rev. BSelf Cite16380View full textAdd to dashboardCite

“…The corresponding to long range ordered CE-type antiferromagnetic spin structure are observed, in concurrence with our previously reported neutron diffraction study. 25 In addition, at low temperature few additional superlattice reflections (at 2  37 and  88) other than the ones corresponding to CE-type antiferromagnetic spin structure are observed. This antiferromagnetic phase is identified as having an A-type spin structure.…”

“…The phase purity of all the samples is confirmed by x ray and neutron diffraction techniques reported previously. 25 Polarized neutron diffraction ( = 4.74Å) measurements in the angular range 20° ≤ 2θ ≤ 125°…”

“…with the previously reported structural studies on this compound. 25 The SF and NSF scattering for x = 0.1 sample at 310K is shown in figure 2(a). At this temperature, in the paramagnetic region, magnetic diffuse scattering peak is primarily centered at 2  75.5 and a weak superlattice diffuse scattering peak is observed at  33.5, in addition to enhanced scattering at low 2 values in SF scattering.…”

“…The structural and magnetic properties of these samples have been reported previously. 25 In this study, three samples have been chosen which exhibit distinct magnetic structures. The x = 0.1 compound exhibits CE-type antiferromagnetic spin structure, x = 0.3 exhibits mixture of CE-type and A-type antiferromagnetic structure while, x = 0.4 undergoes A-type antiferromagnetic ordering at low temperatures.…”

“…The x = 0.1 compound exhibits CE-type antiferromagnetic spin structure, x = 0.3 exhibits mixture of CE-type and A-type antiferromagnetic structure while, x = 0.4 undergoes A-type antiferromagnetic ordering at low temperatures. 25 The xyz polarization analysis allows us to separate the nuclear and magnetic contributions. with the previously reported structural studies on this compound.…”