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Magnetic structure in Dy/Sc superlattices : 37th Annual conference on magnetism and magnetic materials (1993)

Tsui, F. ; Flynn, C. P. ; Beach, R. S. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 73 (1993), S. 6904-6906

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We have investigated magnetic order in superlattices of Dy and Sc grown along the hcp c axis by molecular beam epitaxy (MBE) techniques. Our neutron diffraction experiments reveal that individual Dy layers order ferromagnetically below Tc∼150 K. The magnetic coherence length along the growth direction is less than the Dy-layer thickness. Previous studies of rare-earth superlattices with Y or Lu as spacer layers have shown that magnetic coherence propagates through sufficiently thin nonmagnetic interlayers. This arises from the long-range exchange interaction that originates from nesting features in the Fermi surface of the spacer material. The lack of coupling in Dy/Sc superlattices reflects the very different Fermi surface of Sc, with much weaker nesting than Y and Lu.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.352429

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