between the Weiss constants of the two sublattices is obtained 𝜃𝜃𝑊𝑊 = 𝐶𝐶𝐹𝐹𝐹𝐹𝜃𝜃𝐹𝐹𝐹𝐹+𝐶𝐶𝑅𝑅𝜃𝜃𝑅𝑅+2(𝐶𝐶𝐹𝐹𝐹𝐹𝐶𝐶𝑅𝑅)1/2𝜃𝜃𝑅𝑅𝐹𝐹𝐹𝐹𝐶𝐶𝐹𝐹𝐹𝐹+𝐶𝐶𝑅𝑅 [4] Assuming that the RiRj 4f-4f interaction is much weaker than...
with reviewed previous measurements on Sm, Tb, Tm, Yb and Lu, with the scope of determining the role played by the rare earth on their magnetic properties. They have been investigated using X-ray powder diffraction, and further characterized by magnetization...

.063(4) Calculated density, g cm−3 5.062 Measured density, g cm−3 5.0760(65) Radiation X-ray, λ = 1.54056 Å Neutrons, λ = 1.5265 Å T, K 298 R-Factors (X-ray) wRp = 2.17%, Rp = 1.56%, R(F 2) = 5.52% R-Factors (neutrons) wRp = 2.76%, Rp = 2.11%, R(F 2) = 15.08% Table 2...
is the Weiss temperature (θ = −55 K). Deviations of the dependence of 1/χ = f (T ) from a straight line are observed above 220 K and below 100 K. The experimental value of the effective magnetic moment (μeff ) for Ba7Li1.75Mn3.5O15.75 (5.80μB) is close...

single crystal and powder X-ray diffraction analysis, showed distinct geometric differences in the paddle wheel units of the respective MOFs. These differences are further disclosed by solid-state UV-vis, FT-IR and Raman spectroscopy. Magnetic properties...

Heat capacity,MössbauerandRamanspectraaswellasmagneticpropertiesof fluoride CsFe2F6 with defect pyrochlorestructurewerestudied.Inadditiontorecentlyfoundaboveroomtemperaturethree successivestructuraltransformationsPnma-Imma-I41amd-Fd-3m...

of compound. So, first of all it is necessary to f magnetic field. investigation of the ludwigite tial components retical methods: ates of transition nstants and the 2.1. Crystal growth and X-ray diffraction Contents lists available at ScienceDirect .els...
of X-ray diffraction and EXAFS experiments the field-temperature dependencies of ludwigite Ni2MnBO5 have been interpreted. The parameters of modified Curie–Weiss law (1) have been determined. Experimentally obtained value of ef- fective magnetic moment...

single crystal and powder X-ray diffraction analysis, showed distinct geometric differences in the paddle-wheel units of the respective MOFs. These differences are further disclosed by solid-state UV-vis, FT-IR and Raman spectroscopy. Magnetic properties...

to temperatures well above TSG reflecting in increasing deviations from the Curie-Weiss law, the reduced effective magnetic moment and ‘‘missing” entropy. The results are interpreted in the terms of the progressive increase of the frustration effect...

Heat capacity,MössbauerandRamanspectraaswellasmagneticpropertiesof fluoride CsFe2F6 with defect pyrochlorestructurewerestudied.Inadditiontorecentlyfoundaboveroomtemperaturethree successivestructuraltransformationsPnma-Imma-I41amd-Fd-3m...

IOPscience New hexagonal perovskite with Mn4+ and Mn5+ at distinct structural positions N V Tarakina1,2, A P Tyutyunnik3, G V Bazuev3, A D Vasiliev4,5, I F Berger3, C Gould2, I V Nikolaenko3 1The NanoVision Centre, School of Engineering and Materials...
-state synthesis. Its crystal structure has elements typical for the layered hexagonal perovskites and quasi-one-dimensional oxides, hence representing a new polytype. Structural solution based on simultaneous refinement of X-ray and neutron diffraction data...

- tion doesn’t cause significant mode coupling, and each Floquet mode consists of only one mode of the unperturbed waveguide. All the ray-based predictions fail. As f increases, the situation becomes more complicated. In the case of f = 50 Hz, the diagonal...
(c)–(e)). These peaks arise on the stable or unstable periodic orbits of ray-medium resonances. Floquet modes, belonging to the chaotic layer, are spread as it is shown in Fig. 3(f) but also have regular structure. Thus, the case of a slowly depth...