The recent identification of the dysprosium titanate compound Dy2Ti2O7 as a ``Spin-Ice'', i.e. the spin analog of regular entropic ice of Pauling, has created considerable excitement. The ability to manipulate spins using magnetic fields gives a unique advantage over regular ice in these systems, and has been used to study the recovery of entropy. Predicted magnetization plateaus have been observed, testing the underlying model consisting of a competition between short ranged super exchange, and long ranged dipolar interactions between spins. I discuss other compounds that are possibly spin ice like: Ho2Ti2O7, and the two stannates Ho2Sn2O7, Dy2Sn2O7.
@article{arxiv.cond-mat/0210230,
title = {Spin-Ice and Other Frustrated Magnets on the Pyrochlore Lattice},
author = {B. Sriram Shastry},
journal= {arXiv preprint arXiv:cond-mat/0210230},
year = {2009}
}
Comments
4 pages, Invited Contribution for Low Temperature Conference LT23, August 20-27, Hiroshima JAPAN, to be published in Physica B & C (2003)