Study of magnetic properties of inverted opal-like structures by the small-angle neutron scattering
The proposal is aimed to investigate the local magnetization distribution in a three-dimensional network constructed by the magnetic elements of the size of 400 - 500 nm. 3D network is an inverse opal-like (IOL) Co film which is prepared by well known templating technique. The ferromagnetic inverse opal-like structure are interesting as a three-dimensional nanoscale analogue of highly frustrated systems called spin-ice. Since, in analogy to the spin "ice rule", the magnetic flux conservation law for the elements of the structure must be fulfilled, we have developed a model for the distribution of the magnetic moments within the IOLS. Present proposal is aimed to improve the "ice-rule" model suggested in for the geometry, when the field is applied along the [111] direction, i.e. perpendicular to the sample plane. In this case, at the certain value of the magnetic field the "ice-rule" will not be executed and "monopoles" can arise in highly frustrated nanoscale system. In addition, we propose to measure field-dependent diffraction patterns in geometries when sample is oriented perpendicular to the neutron beam propagation while th
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MENZEL Dirk; CHERNYSHOV Dmitry; DIADKIN Vadim; DUBITCKII Ilia; S.V. Grigoriev; Grigoryeva Natalia; HONECKER Dirk; KONIK Peter; LOTT Dieter; MISTONOV Alexander; SHISHKIN Ivan; SIEGFRIED Sven-Arne and VOROBIEV Alexei. (2014). Study of magnetic properties of inverted opal-like structures by the small-angle neutron scattering. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-175
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