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Wermeille, D

Publications and source records attributed to Wermeille, D.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2011

Determination of the Poisson ratio of (001) and (111) oriented thin films of In{sub 2}O{sub 3} by synchrotron-based x-ray diffraction

The Poisson ratio {nu} of In{sub 2}O{sub 3} has been determined by measurement of the covariation of in-plane and out-of-plane lattice parameters of strained thin films grown epitaxially on (111) and (001) oriented cubic Y-stabilized ZrO{sub 2} substrates. The experimental results are in good agreement with values for {nu} calculated using atomistic simulation procedures.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗
DOE OSTI2010

Magnetic structure of Gd[subscript 5]Ge[subscript 4]

Gd{sub 5}Ge{sub 4} crystallizes in the orthorhombic space group Pnma, and orders antiferromagnetically below the Neel temperature T{sub N} {approx} 127 K. We have employed x-ray resonant magnetic scattering to elucidate the details of the magnetic structure. The magnetic unit cell is the same as the chemical unit cell. From azimuth scans and the Q dependence of the magnetic scattering, all three Gd sites in the structure were determined to be in the same magnetic space group Pnma. The magnetic moments are primarily aligned along the c axis and the c components of the magnetic moments at the three different sites are equal. The ferromagnetic Gd-rich slabs are stacked antiferromagnetically along the b direction.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗