Magnetic correlations in a liquid magnet
The existence of polar, i.e. ferromagnetic or ferroelectric ordering, in dipolar liquids has been a long standing open question. Some of the models predicted it some not. The main issue is that appropriate nearest neighbors positional and orientational correlations are crucial for the appearance of the polar phase and are difficult to predict correctly. Recently, it has been shown that in a special kind of ferrofluids, made of magnetic nanoplatelets suspended in alcohols above a certain volume fraction a ferromagnetic nematic phase appears. These ferrofluids present a unique model system, in which positional and magnetic correlations between the constituents can be studied and polarization analyzed SANS is an excellent method for such studies.
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MERTELJ Alenka; CUBITT Robert; GREGORIN Ziga; KLEPP Juergen and KOHLBRECHER Joachim. (2020). Magnetic correlations in a liquid magnet. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-32-889
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