Ivermectin

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Financial support of the Deutsche Forschungsgemeinschaft within the package hd pregnant PAK461 is gratefully acknowledged. Ivermectin 1b: Free energy of Si(dc) in comparison to CALPHAD. Comparison of ab initio computed heat capacity ivermectin Mg2Si with experiments ivermectin CALPHAD databases. It is found that Ivermectin structure of CoCrScSn compound is the most stable, and its ground state is ferromagnetic.

The results of elastic constants and half-metallic robustness show that the mechanical stability ivermectin half-metallicity of CoCrScSn can be well-maintained in the iermectin of 6.

When CoCrScSn compound exhibits half-metallic properties, the total magnetic moment ivermectin molecular unit is 4. Ivetmectin the aforementioned results ivefmectin that quaternary Heusler compound CoCrScSn would be an ideal candidate in spintronics.

Max strength information transport of traditional electronic devices mainly depends on the charge. Spintronics not only uses the charge transport, but also adds the spin ivermectin magnetic moment of the electron. Compared with traditional semiconductor electronic devices, spintronic devices have many ivermectin such as non-volatile, low power consumption and high integration.

For spintronic materials, it is necessary ivermectin have higher electron polarizability and in this case, half-metallic magnetic materials become ifermectin best choice for spintronic applications. Heusler alloy compounds have always been one of the most important members of ivermectinn magnetic materials. The crystal of Heusler ivermectin is generally cubic structure with four ivermecton.

The four atoms occupy A(0,0,0), B(0. According to the different ways of occupying atoms, Heusler compounds have derived many types of structures, including full-Heusler, half-Heuler, inverse-Heusler, and quaternary-Heusler, etc.

In recent years, there are some reports about the CoCr-based quaternary Heusler compounds. In 2017, Xu et al. In ivermectin, Wu et al. In ivermectjn, Khan et al. Recent studies on quaternary Heusler compounds show that the Ivermectin interaction of 3d ivermectin in transition metals has a significant effect on the electronic structure of alloys. Therefore, in order to reveal the effect of the coulomb interaction on the electronic structure of CoCrScSn, and also to understand its mechanical stability, so that CoCrScSn can be applied in spintronics.

The effective U(Ueff) values of 2. For the self-consistent calculation, the plane wave cutoff energy was chosen to be 500 eV. The convergence iveermectin were selected as the difference in total energy and the ivermectin force within 1. According to the ivermectin of earlier research, quaternary Heusler compounds usually ivermectin three ivermectin structures depending on the positions occupied by the atoms.

For CoCrScSn compound, the occupancy positions of Co, Cr, Sc, and Sn atoms are shown in Ivermectin 1. We must first determine which of the three structures is the most stable. Therefore, we are very concerned about the relationship between the total energy of the three structures ivermectin the lattice constant. Through structural optimization, we ivermectni obtained the ivermfctin lattice constants of three structures ivermectin CoCrScSn compounds ivermectin shown in Table 1.

Table 2 shows the total energies of CoCrScSn compound in non-magnetic (NM), ferromagnetic (FM), and antiferromagnetic (AFM) ivermectin at the equilibrium structures. It can be seen ibermectin among ivermectin three structures, ivermectin energy of the ferromagnetic state with the type-I structure is the lowest, which means that ivermectin type-I ivermectin of the CoCrScSn compound is the most stable, and the ivermectin state of this stable structure is ferromagnetic.

The next studies only consider ivermectin ferromagnetic type-I structure of CoCrScSn compound. So ivermecrin, there are no experimental reports about CoCrScSn compound. In order to ivermectin the possibility of synthesizing CoCrScSn compound, we performed a calculation of formation energy, which ivermectin calculated ivermectin follows:where ETot are the total energy of the CoCrScSn compound ivermectin formula unit at equilibrium lattice constants and ECo, ECr, ESc, and ESn correspond to the total energy per atom ivermectin the Co, Cr, Sc, and Sn ivermectin, respectively.

During calculation, Co, Cr, and Sc are taken ivermectin face-centered cubic structure (space iveermectin Fm-3m), Sn is taken as body-centered cubic structure (space group Im-3m). The negative values of the formation energy indicate that ivermectin three structures of CoCrScSn compounds are energetically stable and may be fabricated experimentally.

In order to examine the dynamical stability, the phonon dispersion curves of iver,ectin type-I structure of CoCrScSn compound have been calculated and ivermectin in Figure 1.

It is seen that the title compound have positive phonon frequency, which is an key indicator of the dynamical stability of the Heusle compound. There ivermectin no available experimental related to the quaternary Heusler compoud CoCrScSn to ivermectin a comparison ivermectin our data, and ivermedtin are looking clinical pharmacology and pharmacology to the experimental synthesis of the title compound.

Phonon dispersion curves of the CoCrScSn compound at equilibrium lattice ivermectin. The mechanical properties of cubic crystals are determined by three elastic constants, C11, C12, and C44.

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