1.1 Spin Ices
7
Fig. 1.7 Dy 2 Ti 2 O 7 neutron scattering spectra at 0.05K with zero field applied (top) and when a
field of 1T is applied (bottom). Diffuse scattering disappears and magnetic bragg peaks appear in
the presence of a magnetic field indicating the onset of magnetic order in this compound. Reprinted
figure with permission from T. Fennell et al., Phys. Rev. B., 72, 224411 (2005) Copyright (2005)
by the American Physical Society. Color version of scatter plots courtesy from Dr. O. Petrenko
[20]
Fig. 1.8 left: AC susceptibility measurements of Dy 2 Ti 2 O 7 allow determination of spin relaxation
times of this compound as a function of temperature. Used with permission from K Matsuhira et
al Novel dynamical magnetic properties in the spin ice compound Dy2Ti2O7. J. Phys. Condens.
Matter 13, L737 (2001) permission conveyed through Copyright Clearance Center, Inc. [21]. right:
Spin relaxation times determined from susceptibility measurements of Dy 2 Ti 2 O 7 exhibit three
different regimes including spin freezing at temperatures higher than 10K and lower than 4K.
Reprinted figure with permission from J. Snyder et al., Phys. Rev. B., 69, 064414 (2004) Copyright
(2004) by the American Physical Society [18]
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