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RESEARCH PRODUCT

Neutron diffraction experiments on UCu4+xAl8−x

A. KrimmelGarry J. McintyreC. GeibelFrank SteglichAlois Loidl

subject

Phase transitionTetragonal crystal systemMaterials scienceCondensed matter physicsMagnetic momentMoment (physics)Neutron diffractionAntiferromagnetismCondensed Matter PhysicsElectronic Optical and Magnetic Materials

description

Abstract Neutron diffraction experiments are reported on UCu4+xAl8−x for concentrations 0.1≤ x ≤1.9 and temperatures 1.6 K≤T≤300 K. For x ≤ 1 these compounds undergo antiferromagnetic phase transitions into a collinear AF I-type structure. with the magnetic moments aligned along the tetragonal c-axis and alternating order within the a−b planes. With increasing concentration the ordering temperatures decrease and moment compensation due to a Kondo-type interaction develops for x>1.

https://doi.org/10.1016/0304-8853(92)90238-j