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THE MAGNETIC-STRUCTURE OF HOLMIUM/ERBIUM SUPERLATTICES

MCMORROW, DF; SIMPSON, JA; COWLEY, RA; JEHAN, DA; WARD, RCC; WELLS, MR; THURSTON, TR; (1995) THE MAGNETIC-STRUCTURE OF HOLMIUM/ERBIUM SUPERLATTICES. In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. (pp. 779 - 782). ELSEVIER SCIENCE BV

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Abstract

The effect of competing crystal-field anisotropies on magnetic order has been investigated in a series of Ho/Er superlattices using neutron and resonant X-ray magnetic diffraction techniques. The neutron diffraction reveals that for temperatures in the interval T-N(Er) less than or equal to T less than or equal to T-N(Ho) the Ho basal-plane order propagates coherently through the paramagnetic Er, and that below T-N(Er) the longitudinal component of the Er moments fail to order across the Ho block. The magnetic superlattice peaks observed in the X-ray scattering display an anomalous energy dependence: a sharp resonance is found at L(III)(Ho), with no resonance visible at L(III)(Er). These results are discussed with reference to models of exchange in metallic superlattices.

Type: Proceedings paper
Title: THE MAGNETIC-STRUCTURE OF HOLMIUM/ERBIUM SUPERLATTICES
Event: International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism)
Location: WARSAW, POLAND
Dates: 1994-08-22 - 1994-08-26
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/60117
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