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The magnetic properties of gadolinium/holmium superlattices

BrynJacobsen, C; McMorrow, DF; Ward, RCC; Wells, MR; (1997) The magnetic properties of gadolinium/holmium superlattices. J PHYS-CONDENS MAT , 9 (41) 8727 - 8735.

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Abstract

The magnetic properties of Gd/Ho superlattices have been investigated using neutron-diffraction techniques. Between T approximate to 297 K and T approximate to 138 K, the magnetic moments in each Gd block order ferromagnetically in the basal plane with the moments in adjacent Gd blocks antiferromagnetically aligned. At temperatures below T approximate to 138 K, the Ho moments order in a basal-plane helix, while the Gd moments remain ferromagnetically aligned in the basal plane with an alignment between adjacent Gd blocks that is dependent on temperature and the Ho-block thickness. The coherence lengths of the magnetic structures in the growth direction range from 350 Angstrom to 800 Angstrom. Comparisons are made with the results from previous studies of heavy rare-earth superlattices.

Type: Article
Title: The magnetic properties of gadolinium/holmium superlattices
Keywords: RARE-EARTH SUPERLATTICES, LONG-RANGE, HOLMIUM, ORDER, ALLOYS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/60090
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