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Soft x-ray magnetic scattering evidence for biquadratic coupling in Co/Cu multilayers

Hase, T. P. A., Pape, I., Read, Daniel, Tanner, B. K., Dürr, H., Dudzik, E., van der Laan, G., Marrows, C. H. and Hickey, B. J. 2000. Soft x-ray magnetic scattering evidence for biquadratic coupling in Co/Cu multilayers. Physical Review -Series B- 61 (22) , pp. 15331-15337. 10.1103/PhysRevB.61.15331

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Abstract

Soft x-ray resonant magnetic scattering has been used to study the magnetic structure of sputtered Co/Cu multilayers. A pure magnetic peak, at half the scattering vector of the structural Bragg peak from the multilayer, was observed from layers with and without deliberate oxygen contamination in the middle of the copper spacer layer. With increasing field in the sample plane, the magnetic peak intensity varied very differently for the two types of sample due to the high sensitivity of the magnetic scattering to changes in moment rotation in the sample plane. The data provide strong support for a model of biquadratic coupling in the contaminated samples and bilinear, antiferromagnetic coupling in the clean samples.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords: Interface structure and roughness; Spin arrangements in magnetically ordered materials; Domain effects; magnetization curves; hysteresis; Magnetic properties of thin films; surfaces; interfaces
Publisher: American Physical Society
ISSN: 1098-0121
Last Modified: 04 Jun 2017 01:59
URI: http://orca.cf.ac.uk/id/eprint/7205

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