Babkevich, P.Nikseresht, N.Kovacevic, I.Piatek, J. O.Dalla Piazza, B.Kraemer, C.Kramer, K. W.Prokes, K.Mat'As, S.Jensen, J.Rønnow, Henrik M.2017-01-242017-01-242017-01-24201610.1103/PhysRevB.94.174443https://infoscience.epfl.ch/handle/20.500.14299/133624WOS:000388815300005We present a systematic study of the phase diagram of LiHoxY1-xF4 (0.25 <= x <= 1) Ising ferromagnets obtained from neutron scattering measurements and mean-field calculations. We show that while the thermal phase transition decreases linearly with dilution, as predicted by mean-field theory, the critical transverse field at the quantum critical point is suppressed much faster. This behavior is related to competition between off-diagonal dipolar coupling and quantum fluctuations that are tuned by doping and applied field, respectively. In this paper, we quantify the deviation of the experimental results from mean-field predictions, with the aim that this analysis can be used in future theoretical efforts towards a quantitative description.text::journal::journal article::research article