J R Stewart et al 2004 J. Phys.: Condens. Matter 16 L321 doi:10.1088/0953-8984/16/28/L01
Phase transitions, partial disorder and multi-k structures in Gd2Ti2O7
FREE ARTICLEJ R Stewart1, G Ehlers2, A S Wills3, S T Bramwell3 and J S Gardner4,5
Show affiliationsLETTER TO THE EDITOR
The geometrically frustrated antiferromagnet Gd2Ti2O7 exhibits magnetic behaviour of such complexity that it poses a challenge to both experiment and theory. Magnetic ordering commences at TN = 1.1 K and there is a further magnetic phase transition at 
K. Here we use neutron diffraction to definitively establish the nature of the phase transition at 
and the magnetic structure adopted below this temperature. Between 
and TN the structure is partly ordered, as previously reported. Below 
the remaining spins order, but only weakly. The magnetic structure in this temperature range is shown to be a 4-k structure, closely related to the 1-k structure previously suggested. The 4-k and 1-k variants of the structure are distinguished by analysis of the diffuse scattering, which we believe represents a new method of solving the 'multi-k' problem of magnetic structure determination.
- PACS
-
61.05.fg Neutron scattering (including small-angle scattering)
75.30.Kz Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
- Subjects
- Dates
-
Issue 28 (21 July 2004)
Received 12 March 2004
Published 2 July 2004
-
Phase transitions, partial disorder and multi-k structures in Gd2Ti2O7
J R Stewart et al 2004 J. Phys.: Condens. Matter 16 L321
-
Pump–probe experiments in atoms involving laser and synchrotron radiation: an overview
F J Wuilleumier and M Meyer 2006 J. Phys. B: At. Mol. Opt. Phys. 39 R425
-
Integrating peptide nanotubes in micro-fabrication processes
N B Sopher et al 2007 J. Micromech. Microeng. 17 2360
-
Free-volume approximations for predicting the phase behaviour of asymmetric hard-sphere mixtures
Henk N W Lekkerkerker and S Martijn Oversteegen 2002 J. Phys.: Condens. Matter 14 9317
-
An energy relaxation tolerant approach to quantum entanglement, information transfer, and gates with superconducting-quantum-interference-device qubits in cavity QED
Chui-Ping Yang et al 2004 J. Phys.: Condens. Matter 16 1907
-
Pyroelectric properties of phosphoric acid-doped TGS single crystals
Aparna Saxena et al 2003 J. Phys. D: Appl. Phys. 36 3168
-
Self-avoiding walks, neighbour-avoiding walks and trails on semiregular lattices
I Jensen and A J Guttmann 1998 J. Phys. A: Math. Gen. 31 8137
-
Interaction of Infall and Winds in Young Stellar Objects
G. Delamarter et al. 2000 ApJ 530 923
-
Rosenfeld functional for non-additive hard spheres
Matthias Schmidt 2004 J. Phys.: Condens. Matter 16 L351
-
Intensity modulated radiation therapy using laser-accelerated protons: a Monte Carlo dosimetric study
E Fourkal et al 2003 Phys. Med. Biol. 48 3977
Users also read
What's this?Related review articles
What's this?- Magnetic nanostructures
- Spin wave acoustics of antiferromagnetic structures as magnetoacoustic metamaterials
- Magnetic nanostructures for advanced technologies: fabrication, metrology and challenges