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Low-temperature magnetic ordering in SrEr2O4

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Petrenko, O. A., Balakrishnan, Geetha, Wilson, Neil R., de Brion, S., Suard, E. and Chapon, L. C.. (2008) Low-temperature magnetic ordering in SrEr2O4. Physical Review B (Condensed Matter and Materials Physics), Volume 78 (Number 18). Article No. 184410 . ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.78.184410

Abstract

SrEr2O4 has been characterized by low-temperature powder neutron diffraction, as well as single-crystal specific-heat and magnetization measurements. Magnetization measurements show that the magnetic system is highly anisotropic at temperature above ordering. A magnetic field of 280 kOe applied at T=1.6 K does not overcome the anisotropic magnetization and fails to fully saturate the system. Long-range antiferromagnetic ordering develops below T-N=0.75 K, identified by magnetic Bragg reflections with propagation vector k=0 and a lambda anomaly in the specific heat. The magnetic structure consists of ferromagnetic chains running along the c axis, two adjacent chains being stacked antiferromagnetically. The moments point along the c direction, but only one of the two crystallographically inequivalent Er sites has a sizeable ordered magnetic moment, 4.5 mu(B) at 0.55 K. The magnetic properties of SrEr2O4 are discussed in terms of the interplay between the low dimensionality, competing exchange interactions, dipolar interactions, and low-lying crystal-field levels.

Item Type:

Journal Article

Subjects:

Q Science > QC Physics
Q Science > QD Chemistry

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Strontium compounds -- Magnetic properties, Strontium compounds -- Thermal properties, Erbium, Oxides -- Thermal properties, Oxides -- Magnetic properties

Journal or Publication Title:

Physical Review B (Condensed Matter and Materials Physics)

Publisher:

American Physical Society

ISSN:

1098-0121

Official Date:

November 2008

Dates:

Date	Event
November 2008	Published

Volume:

Volume 78

Number:

Number 18

Number of Pages:

Page Range:

Article No. 184410

Identification Number:

10.1103/PhysRevB.78.184410

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

Funder:

European Commission (EC), Engineering and Physical Sciences Research Council (EPSRC)

Grant number:

ITA-CT-2003-505474 (EC)

References:

1H. Kawamura, J. Phys.: Condens. Matter 10, 4707 1998; M. F.
Collins and O. A. Petrenko, Can. J. Phys. 75, 605 1997.
2A. P. Ramirez, G. P. Espinosa, and A. S. Cooper, Phys. Rev. Lett.
64, 2070 1990; C. Broholm, G. Aeppli, G. P. Espinosa, and A.
S. Cooper, ibid. 65, 3173 1990.
3P. Schiffer, A. P. Ramirez, D. A. Huse, P. L. Gammel, U. Yaron,
D. J. Bishop, and A. J. Valentino, Phys. Rev. Lett. 74, 2379
1995; P. Schiffer, A. P. Ramirez, D. A. Huse, and A. J. Valentino,
ibid. 73, 2500 1994; O. A. Petrenko, C. Ritter, M.
Yethiraj, and D. McK Paul, ibid. 80, 4570 1998.
4For reviews on frustrated pyrochlore magnets see S. T. Bramwell
and M. J. P. Gingras, Science 294, 1495 2001; J. E. Greedan,
J. Mater. Chem. 11, 37 2001; J. Alloys Compd. 408-412, 444
2006.
5A. P. Ramirez, in Handbook on Magnetic Materials, edited by K.
J. H. Busch Elsevier Science, Amsterdam, 2001, Vol. 13, p. 423.
6K. Binder, Phys. Rev. Lett. 45, 811 1980; C. L. Henley, J.
Appl. Phys. 61, 3962 1987.
7To avoid confusion, it should be stated that in some cases the
term “honeycomb structure” is used to describe the magnetic
structure of Ising-like spins on a hexagonal lattice, where one
third of the magnetic moments are aligned antiparallel to another
third, while the residual third of the moments remain disordered
Ref. 18. In this article we use the term “honeycomb structure”
in a strictly crystallographic sense.
8A. Mattsson, P. Frojdh, and T. Einarsson, Phys. Rev. B 49, 3997
1994.
9H. Karunadasa, Q. Huang, B. G. Ueland, J. W. Lynn, P. Schiffer,
K. A. Regan, and R. J. Cava, Phys. Rev. B 71, 144414 2005.
10B. F. Decker and J. S. Kasper, Acta Crystallogr. 10, 332 1957.
11Y. Doi, W. Nakamori, and Y. Hinatsu, J. Phys.: Condens. Matter
18, 333 2006.
12 I. Felner, Y. Yeshurun, G. Hilscher, T. Holubar, G. Schaudy, U.
Yaron, O. Cohen, Y. Wolfus, E. R. Yacoby, L. Klein, F. H. Potter,
C. S. Rastomjee, and R. G. Egdell, Phys. Rev. B 46, 9132
1992.
13 J. Rodriguez-Carvajal, Physica B 192, 55 1993.
14G. Balakrishnan, T. J. Hayes, O. A. Petrenko, and D. McK Paul,
J. Phys.: Condens. Matter to be published.
15The CT data on nonmagnetic analogues were only used for
comparison to that of SrEr2O4. No subtraction of the lattice
contributions to the specific heat has been performed. Additional
higher-temperature measurements have shown that the specific
heat of SrEr2O4 becomes comparable to that of nonmagnetic
analogues at approximately 50 K.
16T. J. Hayes, D. T. Adroja, and O. A. Petrenko unpublished.
17 L. M. Lopato and A. E. Kushchevskii, Ukr. Khim. Zh. 39, 7
1973.
18M. Mekata, J. Phys. Soc. Jpn. 42, 76 1977; H. Shiba, Prog.
Theor. Phys. 64, 466 1980; F. Matsubara and S. Inawashiro, J.
Phys. Soc. Jpn. 56, 2666 1987.
19 J. D. M. Champion, M. J. Harris, P. C. W. Holdsworth, A. S.
Wills, G. Balakrishnan, S. T. Bramwell, E. Cizmar, T. Fennell, J.
S. Gardner, J. Lago, D. F. McMorrow, M. Orendac, A. Orendacova,
D. McK. Paul, R. I. Smith, M. T. F. Telling, and A.Wildes,
Phys. Rev. B 68, 020401R 2003).