Magnetic vacancy percolation in dilute antiferromagnets

W. C. Barber; F. Ye; D. P. Belanger; J. A. Fernandez-Baca

doi:10.1103/PhysRevB.69.024409

Magnetic vacancy percolation in dilute antiferromagnets

W. C. Barber
, F. Ye
, D. P. Belanger
, J. A. Fernandez-Baca

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12 Scopus citations

Abstract

Neutron-scattering experiments at the magnetic vacancy percolation threshold concentration x_v using the random-field Ising crystal Fe_0.76Zn_0.24F₂, show stability of the transition to long-range order up to fields H = 6.5 T. The observation of the stable long-range order corroborates the sharp boundary observed in computer simulations at x_v separating equilibrium critical scattering behavior at high magnetic concentration from low concentration hysteretic behavior. Low-temperature H > 0 scattering line shapes exhibit the dependence on the scattering wave vector expected for percolation threshold fractal structures.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	69
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.69.024409
State	Published - Jan 21 2004

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title = "Magnetic vacancy percolation in dilute antiferromagnets",

abstract = "Neutron-scattering experiments at the magnetic vacancy percolation threshold concentration xv using the random-field Ising crystal Fe0.76Zn0.24F2, show stability of the transition to long-range order up to fields H = 6.5 T. The observation of the stable long-range order corroborates the sharp boundary observed in computer simulations at xv separating equilibrium critical scattering behavior at high magnetic concentration from low concentration hysteretic behavior. Low-temperature H > 0 scattering line shapes exhibit the dependence on the scattering wave vector expected for percolation threshold fractal structures.",

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AU - Barber, W. C.

AU - Ye, F.

AU - Belanger, D. P.

AU - Fernandez-Baca, J. A.

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Y1 - 2004/1/21

N2 - Neutron-scattering experiments at the magnetic vacancy percolation threshold concentration xv using the random-field Ising crystal Fe0.76Zn0.24F2, show stability of the transition to long-range order up to fields H = 6.5 T. The observation of the stable long-range order corroborates the sharp boundary observed in computer simulations at xv separating equilibrium critical scattering behavior at high magnetic concentration from low concentration hysteretic behavior. Low-temperature H > 0 scattering line shapes exhibit the dependence on the scattering wave vector expected for percolation threshold fractal structures.

AB - Neutron-scattering experiments at the magnetic vacancy percolation threshold concentration xv using the random-field Ising crystal Fe0.76Zn0.24F2, show stability of the transition to long-range order up to fields H = 6.5 T. The observation of the stable long-range order corroborates the sharp boundary observed in computer simulations at xv separating equilibrium critical scattering behavior at high magnetic concentration from low concentration hysteretic behavior. Low-temperature H > 0 scattering line shapes exhibit the dependence on the scattering wave vector expected for percolation threshold fractal structures.

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DO - 10.1103/PhysRevB.69.024409

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Magnetic vacancy percolation in dilute antiferromagnets

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