This paper demonstrates the results of the detailed studying of the MAGNETIC behavior of Co2FeAl alloy nanoparticles synthesized through a co-precipitation method. First order reversal curves (FORCs) diagrams were used consequently. The obtained results showed that the prepared alloys consist of a mixture of the low-coercivity grains (Hc ~ 0), and interacting single-domain high-coercivity grains. Elongated FORC diagrams along Hc axis indicated a wide particle size distribution in the products. Spherical and uniform nanoparticles with a size distribution of 30-90nm were observed in the SEM and TEM images of the synthesized samples. Maximum values of Ms (about 91. 5 emu/g), and coercivity (487 Oe) were obtained for the sample synthesized with the optimum annealing conditions up to 700 ̊ C with 10 ̊ C/min.

Background and Aims: Disc displacement is the most common temporomandibular joint disorder and MAGNETIC resonance imaging (MRI) is the gold standard in its diagnosis. This disorder can lead to changes in signal intensity of MAGNETIC resonance (MR). The purpose of this study was evaluation of correlation between relative signal intensity of MR images of retrodiscal tissue, superior and inferior head of lateral ptrygoid muscle with type of anterior disk displacement and condylar head flattening in patients with temporomandibular disorder (TMD).Materials and Methods: In this retrospective study, 31 MR images of patients who had anterior disc displacement were evaluated. After relative signal intensity measurement for retrodiscal tissue, superior and inferior head of lateral ptrygoid muscle, the correlation between relative signal intensity and type of anterior disc displacement was evaluated with repeated measure ANOVA test. In each of these 3 areas, t-test was used to compare the groups with and without condylar head flattening.Results: The correlation between relative signal intensity of MR images and type of anterior disc displacement in retrodiscal tissue, superior and inferior head of lateral ptrygoid muscle was not significant. There was also no statistically significant correlation between relative signal intensity of MR images and flattening of condylar head in retrodiscal tissue, superior and inferior head of lateral ptrygoid muscle (P>0.05).Conclusion: According to findings of this study, relative signal intensity of MR images in retrodiscal tissue, superior and inferior head of ptrygoid muscle is not a good predictor for type of anterior disc displacement and flattening of condylar head. It seems that this cannot be used as a diagnostic marker for TMD progression.

In the present study, the optical characterization of borate glasses with composition 35Li2O − 10ZnO − 55B2O3 − xMnO2: x = 0, 0. 5, 1. 0, 1. 5, and 2. 0 wt% has been investigated. The absorption spectra measurements within the wavelength domain 200– 1000 nm have been carried out. The optical energy gap of the investigated samples using the absorption spectrum fitting (ASF) model has been calculated. The molar refraction, molar polarizability, reflection loss, optical transmission for the samples were estimated. The metallization criterion, dielectric constant, refractive index, and energy band metallization criterion for the studied glasses were estimated. MAGNETIC property measurements for all glass samples were carried out at 300 K. Additionally, the prospects of gamma-ray INTERACTIONS with the investigated glasses have been achieved through studying the total mass attenuation, coherent, Compton, photoelectric, and pair production INTERACTIONS at photon energy in the range of 0. 356– 1. 330 MeV. Results reveal that the optical and MAGNETIC properties of the investigated glasses change with changing the MnO2 concentration. Studied glasses can be used as a candidate for optical fiber and optical devices application. In the other hand, at lower gamma photon energy range, the photoelectric absorption dominates with the glasses, while as the energy increases, the probability of Compton scattering and pair production become the most dominate INTERACTIONS.

We present and compare the MAGNETIC structures of limit compounds, between the ferromagnetism and ant ferromagnetism in the pseudobinary compounds of type RNi/Pt/Cu, where R = Tb, Gd, Nd or Ce, appearing when we substitute the transition metal. All of them are examples of complex MAGNETIC structures as the result of different MAGNETIC INTERACTIONS, inhomogeneities and disorder. This overview provides us a fruitful field of discussion considering the competition of MAGNETIC INTERACTIONS in a context of disorder. We discuss the similarities and differences between the structures and we conclude about the importance of the disorder in the existence of several phenomena in magnetism, which could lead to new insights in the stability of MAGNETIC phases, as clusters glass or short range INTERACTIONS in the mesoscopic scale.  

At a finite temperature, electron-electron INTERACTIONS and energy eigenvalues were studied using in the field of symplectic geometry and the relativistic radial Schrö dinger equation with the expanded exponential thermal potential (parabolic potential) representing the strong electron-electron interaction. Electron-electron INTERACTIONS can strongly affect the effective mass, mass spectrum, and functionality of multi-electron quantum dots. A quanto-relativistic interaction's behavior and effects with temperature dependence in the MAGNETIC field are shown to have a unique feature in semiconductor quantum dots. These results have important implications for lighting, quantum dot enhancement film, rational design, edge optic, new materials, spin electronics color filter, on-chip, visible and IR/NIR image sensor, photovoltaic, and fabrication of quantum dot qubits with predictable properties.