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SHORT-RANGE MAGNETIC ORDER IN HOLMIUM-PRASEODYMIUM SUPERLATTICES

SIMPSON, JA; MCMORROW, DF; COWLEY, RA; WARD, RCC; WELLS, MR; (1995) SHORT-RANGE MAGNETIC ORDER IN HOLMIUM-PRASEODYMIUM SUPERLATTICES. J PHYS-CONDENS MAT , 7 (31) L417 - L423.

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Abstract

The chemical and magnetic structures of Ho/Pr superlattices have been studied by a combination of x-ray and neutron scattering techniques. While the Ho blocks are hcp, the Pr blocks retain their bulk-like dhcp structure, but with a stacking of the hexagonal atomic planes that is not coherent between successive blocks. Below a Neel temperature of similar to 110 K, the Ho magnetic moments order into a basal plane spiral with a magnetic coherence length that is limited to the width of a single Ho block, even for a sample comprising of only six atomic planes of Pr. These observations are discussed in terms of the differing band structures of the two elements.

Type: Article
Title: SHORT-RANGE MAGNETIC ORDER IN HOLMIUM-PRASEODYMIUM SUPERLATTICES
Keywords: DY-Y SUPERLATTICES, YTTRIUM, METALS, GROWTH
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/60112
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