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We reveal the assembly of monodisperse magnetite nanoparticles of sizes 5 nm, 15 nm and 25 nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-of-plane anisotropy. From neutron reflectometry experiments we…

An analytical solution is found for neutron reflection coefficients from magnetic mirrors with fan-like magnetization. The main feature of the reflection curves related to this type of magnetization is pointed out. The results of…

Optics · Physics 2009-06-24 V. K. Ignatovich , F. Radu

Hard/soft magnetic bilayer thin films have been widely used in data storage technologies and permanent magnet applications. The magnetic configuration and response to temperatures and magnetic fields in these heterostructures are considered…

The utilization of polarized neutrons is of great importance in scientific disciplines spanning materials science, physics, biology, and chemistry. Polarization analysis offers insights into otherwise unattainable sample information such as…

Periodic multilayers of various periods were prepared according to an algorithm proposed by the authors. The reflectivity properties of these systems were investigated using neutron reflectometry.The obtained experimental results were…

Optics · Physics 2009-06-23 V. Bodnarchuck , L. Cser , V. Ignatovich , T. Veres , S. Yaradaykin

We demonstrate optical reflectivity and Raman responses of graphite microstructures as a function of light polarization when the incident light is applied perpendicular to the material's stacking direction (c-axis). For this, we employed…

Mesoscale and Nanoscale Physics · Physics 2023-08-01 Marcin Muszyński , Igor Antoniazzi , Bruno Camargo

We present the use of planar waveguides to produce neutron microbeams in order to investigate magnetic micro-structures with a micrometric spatial resolution. We report experimental results on such measurements on a polarized neutron…

Mesoscale and Nanoscale Physics · Physics 2012-10-12 S. V. Kozhevnikov , T. Keller , Yu. N. Khaydukov , F. Ott , A. Rühm , A. Thiaville , J. Torrejón , M. Vázquez , J. Major

Information on the polarization properties of scattered light from plasmonic systems are of paramount importance due to fundamental interest and potential applications. However, such studies are severely compromised due to the experimental…

We have used numerical micromagnetics for the calculation of the magnetic (small-angle) neutron scattering cross section of nanocomposites. The novel aspect of our approach consists in the possibility to study the applied-field dependence…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 S. Erokhin , D. Berkov , N. Gorn , A. Michels

Iron self-diffusion in nano-composite FeZr alloy has been investigated using neutron reflectometry technique as a function of applied compressive stress. A composite target of (Fe+Zr) and (57Fe+Zr) was alternatively sputtered to deposit…

Materials Science · Physics 2009-11-11 Mukul Gupta , Ajay Gupta , Sujoy Chakravarty , Rachana Gupta , Thomas Gutberlet

The scattering length density profile for a thin film structure can be determined uniquely if both modulus and phase of the reflection coefficient is known. Here, we describe a method for recovering the phase information which utilize a…

Materials Science · Physics 2009-11-10 S. Farhad Masoudi

We studied the depth dependent magnetization profile of the magnetostrictive Co thin film layer in a PMN-PT (011)/Ta/Co/Ta structure under both zero and nonzero applied electric field using polarized neutron reflectometry. Application of…

Mesoscale and Nanoscale Physics · Physics 2019-04-02 Md Mamun Al-Rashid , Alexander Grutter , Brian Kirby , Jayasimha Atulasimha

Reflected neutron beam originating from a crystal monochromator contains higher order wavelength contribution. Creating multilayer mirror structures with custom reflectivity curves including a monochromatic polarized neutron beam is a…

Materials Science · Physics 2011-09-23 D. G. Merkel , L. Bottyán , B. Nagy , Sz. Sajti , E. Szilágyi , R. Kovács-Mezei

Accurate characterization of polarization dependent light matter interactions in nanostructured systems is paramount for the development of chiral metasurfaces. It is also often challenging, because multiple anisotropic mechanisms, such as…

Optics · Physics 2026-04-27 Jeeban Kumar Nayak , Ebru Buhara , Olivier J. F. Martin

Polarized neutron diffraction allows to determine the local susceptibility tensor on the magnetic site both in single crystals and powders. It is widely used in the studies of single crystals, but it is still hardly applicable to a number…

Materials Science · Physics 2019-11-20 Iurii Kibalin , Arsen Gukasov

We present a method to measure the magnetic properties of monolayers and ultra-thin films of magnetic material. The method is based on low energy muon spin rotation and $\beta$-detected nuclear magnetic resonance measurements. A spin probe…

Mesoscale and Nanoscale Physics · Physics 2012-06-07 Z. Salman , S. J. Blundell

An approach for measuring linear X-ray polarization over a broad-band using conventional spectroscopic optics is described. A set of multilayer-coated flats reflect the dispersed X-rays to the instrument detectors. The intensity variation…

Astrophysics · Physics 2009-11-13 Herman L. Marshall

Polarized optical microscopy and spectroscopy are progressively becoming key methods for the high-throughput characterization of individual carbon nanotubes (CNTs) and other one-dimensional nanostructures, on substrate and in devices. The…

Neutron reflectometry (NR) has emerged as a unique technique for the investigation of structure and magnetism of thin films of both biologically relevant and magnetic materials. The advantage of NR with respect to many other…

Materials Science · Physics 2023-03-24 Surendra Singh

The surfaces of neutron stars are likely sources of strongly polarized soft X rays due to the presence of strong magnetic fields. Scattering transport in the surface layers is critical to the determination of the emergent anisotropy of…

High Energy Astrophysical Phenomena · Physics 2023-03-15 Kun Hu , Matthew G. Baring , Joseph A. Barchas , George Younes