Magnetic refrigeration with paramagnetic semiconductors at cryogenic temperatures
Mesoscale and Nanoscale Physics
2017-06-05 v1 Materials Science
Abstract
We propose paramagnetic semiconductors as active media for refrigeration at cryogenic temperatures by adiabatic demagnetization. The paramagnetism of impurity dopants or structural defects can provide the entropy necessary for refrigeration at cryogenic temperatures. We present a simple model for the theoretical limitations to specific entropy and cooling power achievable by demagnetization of various semiconductor systems. Performance comparable to that of the hydrate (CMN) is predicted.
Keywords
Cite
@article{arxiv.1706.00458,
title = {Magnetic refrigeration with paramagnetic semiconductors at cryogenic temperatures},
author = {A. Vlasov and J. Guillemette and G. Gervais and T. Szkopek},
journal= {arXiv preprint arXiv:1706.00458},
year = {2017}
}