The Rowell criteria, commonly used to identify tunneling in magnetic tunnel junctions (MTJ), are scrutinized. While neither the exponential-thickness dependence of the conductivity nor fits of non-linear transport data are found to be reliable tunneling criteria, the temperature-dependent conductivity does remain a solid criterion. Based on experimental studies of the bias and temperature-depen...

As a two-dimensional material with hollow hexatomic ring structure, Néel-type anti-ferromagnetic (AFM) GdI3 can be used as theoretical model to study the effect of electron doping. Based on first-principles calculations, we find that Fermi surface nesting occurs when more than 1/3 per Gd is doped, resulting in failure obtain stable ferromagnetic (FM) state. More interestingly, appropriate Mg/Ca...

Ferromagnetic Fe40Co37Zr11N12/ZrN/Ni80Fe20 film systems with a uniaxial anisotropy in the plane were synthesised by reactive magnetron sputtering and post annealing static magnetic field. Investigation on energy exchange interaction between ferromagnetic layers without an interface layer carried out. This impacts magnetisation properties as well natural resonance frequency behaviour its damping...

We have investigated the magnetic properties of a GaN/Ga1−xMnxN (x = 0.1) digital ferromagnetic heterostructure (DFH) showing ferromagnetic behavior using soft x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD). The Mn L2,3-edge XAS spectra were similar to those of Ga1−xMnxN random alloy thin films, indicating a substitutional doping of high concentration Mn into G...

We use Wagner's weighted subgraph counting polynomial to prove that the partition function of anti-ferromagnetic Ising model on line graphs is real rooted and roots edge cover have absolute value at most $4$. more generally show a $k$-uniform hypergraph $2^k$, discuss applications this domination polynomials graphs. moreover how our results relate efficient algorithms for approximately computin...

We determine magnon spectra of an atomic bilayer magnet with ferromagnetic intra- and both ferro- anti- interlayer coupling. Analytic expressions for the full band latter case reveal that exchange interactions govern fundamental gap. The inter intralayer magnetic ordering are not independent: ferromagnetism stabilizes antiferromagnetic inter-layer order. topology these exchange-anisotropy spin ...

Azide binding to the blue copper oxidases laccase and ascorbate oxidase (AO) was investigated by electron paramagnetic resonance (EPR) and pulsed electron-nuclear double resonance (ENDOR) spectroscopies. As the laccase : azide molar ratio decreases from 1:1 to 1:7, the intensity of the type 2 (T2) Cu(II) EPR signal decreases and a signal at g approximately 1.9 appears. Temperature and microwave...

Ferromagnetic nanoparticles are building blocks of future high density recording media and high performance permanent magnets. However, it is very challenging to produce nanoparticles with ferromagnetism at room temperature. The author describes recent progress in preparing ferromagnetic nanoparticles. Ferromagnetic nanoparticles can be used as building blocks for advanced bulk and thin fi lm m...

Magnetization, resistivity, thermal expansion, thermopower, and neutron powder diffraction data are presented for the perovskite manganite Pr0.7Ba0.3MnO3. A distinct ferromagnetic insulating state, similar to that observed in the La0.88Sr0.12MnO3 system, is observed in the temperature range between the paramagneticferromagnetic transition at TFM'180 K and the broad metal-insulator transition ne...