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12 papers · 2 filters
Crystal structures and magnetic order of La{0.5+delta}A{0.5-delta}Mn{0.5+epsilon}Ru{0.5-epsilon}O{3} (A= Ca, Sr, Ba): Possible orbital glass ferromagnetic state
Eduardo Granado, Qingzhen Huang, Jeff W. Lynn +2
The crystallographic and magnetic properties of La{0.5+delta}A{0.5-delta}Mn{0.5+epsilon}Ru{0.5-epsilon}O{3} (A= Ca, Sr, Ba) were investigated by means of neutron powder diffraction…
Uncorrelated and correlated nanoscale lattice distortions in the paramagnetic phase of magnetoresistive manganites
V. Kiryukhin, A. Borissov, J. S. Ahn +3
Neutron scattering measurements on a magnetoresistive manganite La(CaSr)MnO show that uncorrelated dynamic polaronic lattice distortions are…
Dynamic properties of a diluted pyrochlore cooperative paramagnet (Tb_pY_{1-p})_2Ti_2O_7
A. Keren, J. S. Gardner, G. Ehlers +3
Investigations of the spin dynamics of the geometrically frustrated pyrochlore (Tb_pY_{1-p})_2Ti_2O_7, using muon spin relaxation and neutron spin echo, as a function of magnetic c…
Competing Magnetic Phases on a "Kagome Staircase"
G. Lawes, M. Kenzelmann, N. Rogado +11
We present thermodynamic and neutron data on Ni_3V_2O_8, a spin-1 system on a kagome staircase. The extreme degeneracy of the kagome antiferromagnet is lifted to produce two incomm…
Coupling between electronic and structural degrees of freedom in the triangular lattice conductor NaxCoO2
Q. Huang, M. L. Foo, R. A. Pascal +5
The determination by powder neutron diffraction of the ambient temperature crystal structures of compounds in the NaxCoO2 family, for 0.3 < x <= 1.0, is reported. The structures co…
Structural transition in NaxCoO2 with x near 0.75 due to Na rearrangement
Q. Huang, B. Khaykovich, F. C. Chou +3
We report neutron powder diffraction measurements on a series of NaxCoO2 samples with x near 0.75 which were prepared under different synthesis conditions. Two different crystal st…