The ternary compound Ba Li Sn was obtained by slow cooling of a stoichiometric mixture of the elements that was heated at 800 8C 3 4 8 3 ̊ ̊ for 2 days. Its structure (monoclinic, C2/m, Z52, a518.549(1), b56.685(1), c56.792(1) A, V5833.2(2) A , R /wR 5 4.03/11.33%) 1 2 1 102 contains one-dimensional chains of [Sn ] made of edge-sharing cyclodecane-like units in their ‘all-chair’ conformations. Th...

The p-T phase diagram [2, 3] for this compound is given in Figure 1. Generally, different models of motion of the ammonium ions are proposed for different phases, and many research papers deal with this problem. Numerous papers [4 10] were devoted to NMR T j relaxation time calculations for different types of anisotropic reorientations of the ammonium cation. An extensive review of ammonium ion...

We present a mean-field calculation of the phase diagram of a simple model of localized moments, in the hexagonal uranium heavy-fermion compounds. The model considers a non-Kramers quadrupolar doublet ground state magnetically coupled with a singlet excited-state, favoring in-plane van-Vleck magnetism, as has been conjectured for UPt3. The Hamiltonian which defines the model is Heisenberg like ...

We consider the electronic structure of, and magnetic exchange (spin) interactions between, nominally nonmagnetic Eu ions (4f, S=3, L=3, J=0) within the context of the rocksalt structure compounds EuN and EuP. Both compounds are ionic [Eu; N and P ] semimetals similar to isovalent GdN. Treating the spin polarization within the 4f shell, and then averaging consistent with the J=0 configuration, ...

Direct solar coronal magnetic field measurements have become possible since recent development of high-sensitivity infrared detection technology. The SOLARC instrument installed on Mt. Haleakala is such a polarimetric coronagraph that was designed for routinely observing Stokes parameter profiles in near infrared (NIR) wavelengthes. The Fe 1075 nm forbidden coronal emission line (CEL) is potent...

Tetrameric copper(II) complexes of cubane type show the effect of plasticity: The geometry of the magnetically active Cu 4 0 4 -core varies in a wide range caused by different ligands. Mergehenn and Haase [1] classified these complexes geometrically: Type I complexes can be described as two slightly coupled dimers while type II complexes are chairlike. Between these types there is a continuous ...

Two samples of data from approximately 4000 Holstein cows were analyzed by REML with a multivariate (milk and fat yields) animal model for first lactations started in 1970 through 1977 and in 1978 through 1985 and also for first lactation records started in low, middle, and high production herds in 1978 through 1985 separately for California, New York, and Wisconsin herds. Heritability estimate...

Abstract. In this paper we review some applications of the path integral methodology of quantum mechanics to financial modeling and options pricing. A path integral is defined as a limit of the sequence of finite-dimensional integrals, in a much the same way as the Riemannian integral is defined as a limit of the sequence of finite sums. The risk-neutral valuation formula for path-dependent opt...

In the most general case of three electrons in three symmetry unrelated centers with Ŝ1 = Ŝ2 = Ŝ3 = 1/2 localized magnetic moments, the low energy spectrum consists of one quartet (Q) and two doublet (D1, D2) pure spin states. The energy splitting between these spin states can be described with the well-known Heisenberg-Dirac-Van Vleck (HDVV) model spin Hamiltonian, and their corresponding ener...