We report on detailed low-temperature measurements of the magnetization, the specific heat and the electrical resistivity on high-quality CeRuSn single crystals. The compound orders antiferromagnetically at T(N) = 2.8 K with the Ce(3+) ions locked within the a-c plane of the monoclinic structure. Magnetization shows that below T(N) CeRuSn undergoes a metamagnetic transition when applying a magn...

In a previo]ls_paper we considered the magnetization of a single spin embedded in the XY chain after the external magnetic field is switched off. We have shown that this spin thermalizes [1]. This problem was further studied by Emch and Radin [2] from a C*-algebra point of view. In this paper we continue our investigation by considering the reverse question. If at time t = 0, we turn on a magne...

A method is presented for the synthesis of high-quality nickel nanoparticles. Laser-driven decomposition of nickel carbonyl vapors is used to produce particles in the form of an aerosol, followed by exposure to a solvent containing an appropriate surfactant to yield a stable dispersion of particles. This method is scalable and yields a substantially monodisperse distribution of particles at a r...

The magnetization state of a ferromagnetic body is given as the solution of a non-convex variational problem. A relaxation of this model by convexifying the energy density resolves essential macroscopic information that applied physicists and engineers are after. The numerical analysis of the relaxed model faces a nonlinearly constrained convex but degenerated energy functional in mixed formula...

Ferrimagnetic rare earth – transition metal Tb–Fe alloy thin films exhibit a variety of different magnetic properties, which depend strongly on composition and temperature. In this study, first the influence of the film thickness (5–85 nm) on the sample magnetic properties was investigated in a wide composition range between 15 and 38 at.% of Tb. From our results, we find that the compensation ...

The magnetization of the oriented Er5Si4 single crystal, measured along the three principal crystallographic directions, reveals strong magnetocrystalline anisotropy. The b axis is the easy magnetization direction. The possible presence of the crystal-field effect and the noncollinear alignment of magnetic moments result in a lower than g J magnetization along all crystallographic directions, e...

We report on the design and observation of huge inverse magnetizations pointing in the direction opposite to the applied magnetic field, induced in nano-sized amorphous Ni shells deposited on crystalline Au nanoparticles by turning the applied magnetic field off. The magnitude of the induced inverse magnetization is very sensitive to the field reduction rate as well as to the thermal and field ...

Superparamagnetism is an unwanted property of small magnetic particles where the magnetization of the particle flips randomly in time, due to thermal noise. There has been an increased attention in the properties of superparamagnetic particles recently, because of their potential applications in high density storage and medicine. In electron transport through single nanometer scale magnetic par...

As a tribute to the scientific work of Professor Gareth Thomas in the field of structure-property relationships this paper delineates a new possibility of Lorentz transmission electron microscopy (LTEM) to study the magnetic properties of soft magnetic films. We show that in contrast to the traditional point of view, not only does the direction of the magnetization vector in nano-crystalline fi...

In magnetic metals, electrical resistance depends on the direction of magnetization relative to current. New experiments show that this effect does not depend solely electron collisions, as is typically assumed.