Dy2Ti2O7 is at present the cleanest example of a spin-ice material. Previous theoretical and experimental work on the first-order transition between the kagome-ice and the fully polarized state has been taken as a validation for the dipolar spin-ice model. Here we investigate in further depth this phase transition using ac-susceptibility and dc-magnetization, and compare this results with Monte-Carlo simulations and previous magnetization and specific heat measurements. We find signatures of an intermediate state between the kagome-ice and full polarization. This signatures are absent in current theoretical models used to describe spin-ice materials.
@article{arxiv.1510.05962,
title = {An intermediate state between the kagome-ice and the fully polarized state in Dy$_2$Ti$_2$O$_7$},
author = {S. A. Grigera and R. Borzi and D. G. Slobinsky and A. S. Gibbs and R. Higashinaka and Y. Maeno and T. S. Grigera},
journal= {arXiv preprint arXiv:1510.05962},
year = {2015}
}