Fig. 1: Crystal structure, CEF splitting, and thermodynamic fittings of PrTiNbO6.
From: Spin dynamics and Griffiths singularity in the random quantum Ising magnet PrTiNbO6
a Crystal structure of PrTiNbO6 viewed in the ab plane, where the dashed blue lines indicate the unit cells. b Magnetic INS data (red), where the elastic and lattice INS contribution measured on the nonmagnetic reference compound, LaTiNbO6, has been subtracted. The gray squares present the total intensity of PrTiNbO6. The gray line shows the Gaussian fit to the elastic signal with the fitted resolution of σE = 0.48(1) meV, whereas the red line presents the fit to the magnetic data with the convolution function (see main text). c−e Combined fits to measured thermodynamic data31 using models no.1 (without randomness) and 2–4 (random Ising chain with similar parameters, see main text). f Power-law temperature dependence of the magnetic heat capacity below ∼2 K measured at zero field, as compared to the green line calculated by model no. 4. The lattice heat capacity measured on LaTiNbO6 has been subtracted in (e, f)31. Error bars on the experimental data points show a standard error.
