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Ferro I phase and gadolinium

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Collingwood, Joanna F., Palmer, Stuart B., Lees, Martin R., Edwards, C., Santos, J. A. (Jorge A.), Sousa, J. B. and Jiles, David. (2009) Ferro I phase and gadolinium. Physical Review B, Vol.79 (No.10). pp. 104401-1. doi:10.1103/PhysRevB.79.104401

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Official URL: http://dx.doi.org/10.1103/PhysRevB.79.104401

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Abstract

Certain Gd alloys, such as Gd-Y, are known to exhibit an apparent "double ferromagnetism" in which the c axis component orders on cooling from the paramagnetic phase (T-C1), while the basal-plane component remains effectively paramagnetic. Subsequently the basal-plane component orders at a lower temperature (T-C2). Our measurements of low-field ac susceptibility and magnetization for high-quality Gd and Gd-Y single crystals suggest that either the behavior originally used to identify ferro I, namely, the concave-upward growth of the a axis moment in the approach on cooling to T-SR, is not necessarily an indicator of the phase, or that ferro I is also present in pure Gd. Of the several models that exist to describe ferro I, the results from this study favor the random-cone model.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Gadolinium, Ferromagnetism, Curie temperature, Magnetic susceptibility, Magnetization, Paramagnetism, Yttrium alloys
Journal or Publication Title: Physical Review B
Publisher: American Physical Society
ISSN: 1098-0121
Official Date: March 2009
Dates:
DateEvent
March 2009Published
Volume: Vol.79
Number: No.10
Number of Pages: 7
Page Range: pp. 104401-1
DOI: 10.1103/PhysRevB.79.104401
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Engineering and Physical Sciences Research Council (EPSRC)

Data sourced from Thomson Reuters' Web of Knowledge

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