Are ferrofluids superparamagnetic?

Are ferrofluids superparamagnetic? Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as “superparamagnets” rather than ferromagnets. Are ferrofluids toxic? The toxicity of ferrofluid is very low; animal experiments in which the permissible maximum doses of ferrofluid were either administered Read more…