Application of curie law (Magnetic thermometers)
Magnetic thermometers are based on Curies law of magnetism. These thermometers are used to measure very low temperatures (< 1 K) by measuring the magnetic susceptibility of a paramagnetic substance.
Reference: This article is referred from my book “electrical engineering materials” having ISBN 978-81-272-5069-0. In case of any doubt, you can put your question in the comment section.