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Journal article

Long-Range Order and Critical Scattering of Neutrons below the Transition Temperature in β-Brass

By Als-Nielsen, Jens Aage1; Dietrich, O.W.1,2

From

Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

Risø National Laboratory, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

The temperature dependence of long-range order langPrang has been determined from the temperature variation of a superlattice Bragg reflection. The results fitted a power law langPrang prop (Tc-T)beta with Tc the critical temperature and beta = 0.305plusmn0.005, in agreement with the theoretical prediction 0.303

The ratio between the susceptibilities chi+(DeltaT) and chi-(DeltaT) DeltaT deg below and above Tc was found to be 5.5plusmn2.0 at DeltaT = 4.4deg and 8.5plusmn3.0 at DeltaT = 2.1deg. The Ising-model theory predicts the ratio to be 5.2 independent of DeltaT.

Language: English
Year: 1967
Pages: 717-721
ISSN: 15366065 and 0031899x
Types: Journal article
DOI: 10.1103/PhysRev.153.717

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