TY - JOUR
T1 - Robust but disordered collapsed-volume phase in a cerium alloy under the application of pulsed magnetic fields
AU - Ruff, J. P.C.
AU - Islam, Z.
AU - Das, R. K.
AU - Nojiri, H.
AU - Cooley, J. C.
AU - Mielke, C. H.
PY - 2012/1/9
Y1 - 2012/1/9
N2 - We report synchrotron x-ray powder diffraction measurements of Ce 0.8La 0.1Th 0.1 subject to pulsed magnetic fields as high as 28 T. This alloy is known to exhibit a volume collapse upon cooling at ambient pressure, which is a modification of the γ-α transition in elemental cerium. Recently, it has been suggested on the basis of field-cooled resistivity and pulsed-field magnetization measurements that the volume collapse in this alloy can be suppressed by the application of magnetic fields. Conversely, our direct diffraction measurements show a robust collapsed phase, which persists in magnetic fields as high as 28 T. We also observe nanoscale disorder in the collapsed phase, which increasingly contaminates the high-temperature phase upon thermal cycling.
AB - We report synchrotron x-ray powder diffraction measurements of Ce 0.8La 0.1Th 0.1 subject to pulsed magnetic fields as high as 28 T. This alloy is known to exhibit a volume collapse upon cooling at ambient pressure, which is a modification of the γ-α transition in elemental cerium. Recently, it has been suggested on the basis of field-cooled resistivity and pulsed-field magnetization measurements that the volume collapse in this alloy can be suppressed by the application of magnetic fields. Conversely, our direct diffraction measurements show a robust collapsed phase, which persists in magnetic fields as high as 28 T. We also observe nanoscale disorder in the collapsed phase, which increasingly contaminates the high-temperature phase upon thermal cycling.
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U2 - 10.1103/PhysRevB.85.024104
DO - 10.1103/PhysRevB.85.024104
M3 - Article
AN - SCOPUS:84856488082
VL - 85
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 2
M1 - 024104
ER -