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Neutron-diffraction studies of two-dimensional magnetic ordering in TbRu 2 | Si 2

by neutron diffraction. Below T N, the order is confirmed to be one-dimensional, with a propagation vector Q=(3/1300). At T t∼5 K and T t′∼4 K there are additional phase transitions giving rise to a number of magnetic satellites, not only on high-symmetry lines, but also on low-symmetry lines in the... Full description

Main Author: Kawano, S.
Contributors: Lebech, B.
Shigeoka, T.
Iwata, N.
Contained in: Applied Physics A : Materials Science & Processing Berlin : Springer Vol. 74, No. 1 (2002), p. s643-s645
Journal Title: Applied Physics A : Materials Science & Processing
Fulltext access:
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Links: Volltext (dx.doi.org)
ISSN: 1432-0630
Keywords: OriginalPaper
PACS: 75.25.+z
DOI: 10.1007/s003390201619
Language: English
Notes: Received: 18 July 2001 / Accepted: 11 December 2001 RID="*" ID="*"Corresponding author. (Fax: +81-724/51-2620, E-mail: kawano@rri.kyoto-u.ac.jp)
Physical Description: Online-Ressource
ID (e.g. DOI, URN): 10.1007/s003390201619
s003390201619
PPN (Catalogue-ID): SPR013877879
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520 |a by neutron diffraction. Below T N, the order is confirmed to be one-dimensional, with a propagation vector Q=(3/1300). At T t∼5 K and T t′∼4 K there are additional phase transitions giving rise to a number of magnetic satellites, not only on high-symmetry lines, but also on low-symmetry lines in the a*– b* reciprocal lattice plane. The satellites on high-symmetry lines are described by the fundamental modulation vector Q=(3/1300) and its odd harmonics, while the satellites on low-symmetry lines are given by Q=(mτnτ0), where m and n are odd. The diffraction patterns show that, below T t, the magnetic structures are never one-dimensional as previously reported, but the order is consistent with a two-dimensional model having a 13a×13a×c magnetic unit cell, containing two frustrated Tb sites, one at the corner and the other at the body-centered position. Below T t′, the order is more complex. 
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