Neutron diffraction experiments on UCu4+xAl8−x

Krimmel, A.; Loidl, A.; Geibel, C.; Steglich, F.; McIntyre, G. J.

doi:10.1016/0304-8853(92)90238-J

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Neutron diffraction experiments on UCu_4+xAl_8−x

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Krimmel, A., Loidl, A., Geibel, C., Steglich, F., & McIntyre, G. J. (1992). Neutron diffraction experiments on UCu_4+xAl_8−x. Journal of Magnetism and Magnetic Materials, 103(1-2), 73-77. doi:10.1016/0304-8853(92)90238-J.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D6F0-A

Abstract

Neutron diffraction experiments are reported on UCu4+xAl8-x for concentrations 0.1 less-than-or-equal-to x less-than-or-equal-to 1.9 and temperatures 1.6 K less-than-or-equal-to T less-than-or-equal-to 300 K. For x less-than-or-equal-to 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.