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cond-mat.mtrl-sci2004
A universal relationship between magnetization and local structure changes below the ferromagnetic transition in La_{1-x}Ca_xMnO_3; evidence for magnetic dimers
L. Downward, F. Bridges, S. Bushart +3
We present extensive X-ray Absorption Fine Structure (XAFS) measurements on La_{1-x}Ca_xMnO_3 as a function of B-field (to 11T) and Ca concentration, x (21-45%). These results reve…
cond-mat.mtrl-sci2003
Possible mechanism for achieving glass-like thermal conductivities in crystals with off-center atoms
F. Bridges, L Downward
In the filled Ga/Ge clathrate, Eu and Sr are off-center in site 2 but Ba is on-center. All three filler atoms (Ba,Eu,Sr) have low temperature Einstein modes; yet only for the Eu an…