Neutron scattering study of the layered Ising magnet CsDy(MoO4)2

Автор(и)

  • E.N. Khatsko B. Verkin Institute for Low Temperatures Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • A. Zheludev* Physics Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA
  • J.M. Tranquada Physics Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA
  • W.T. Klooster** Chemistry Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA
  • A.M. Knigavko Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1 Canada
  • R.C. Srivastava Department of Physics, Indian Institute of Technology, Kanpur 208016, India

DOI:

https://doi.org/10.1063/1.1645155

Ключові слова:

PACS: 61.12.–q

Анотація

The quasi-two-dimensional antiferromagnet CsDy(MoO4)2 is studied by neutron diffraction and quasielastic neutron scattering. The crystal structure of two low-temperature phases (below 120 K and below 40 K) is determined. An approximate structure of the magnetically ordered phase (TN = 136 . K) is proposed. In the ordered state the order-parameter critical exponent b = 0.17(0.01), the in-plane correlation length exponent n = 0.94 (0.07), and the staggered susceptibility critical index g = 1.01 (0.04) were determined. Comparing these results to the exact solution for a 2D Ising magnet we conclude that, although 2D behavior is apparent in CsDy(MoO4)2, there are deviations from the simple 2D Ising model.

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Опубліковано

2004-01-05

Як цитувати

(1)
Khatsko, E.; Zheludev*, A.; Tranquada, J.; Klooster**, W.; Knigavko, A.; Srivastava, R. Neutron Scattering Study of the Layered Ising Magnet CsDy(MoO4)2. Fiz. Nizk. Temp. 2004, 30, 184-192.

Номер

Том 30 № 2 (2004)

Розділ

Низькотемпературний магнетизм

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