Abstract
SANS measurements using unpolarized neutron beams are able to provide quantitative information on the magnetic microstructure and the magnitude and microstructure of the magnetic anisotropy of nanomagnetic materials. A new magnetic system for SANS at the YUMO spectrometer is presented. The system includes 2.5 T electromagnet established on a two-axes goniometric table, a power supply, cooling system, PC based control equipment. Main features of magnetic system are: changeable gap for samples (up to 130 mm size), computer controlled horizontal and vertical rotation and sufficiently big space for the sample holders. First results of SANS experiments of ferrofluids and magnetic elastomers obtained at YuMO spectrometer equipped with the new magnetic system are presented.
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