Yurij Mozharivskyj

High-Temperature Modification of Y5Sb3 and its Ternary Analogue Y5NixSb3-x

Abstract The high-temperature modification of Y 5 Sb 3 has been discovered: the Yb 5 Sb 3 structure type, Pnma space group, a =11.867(1), b =9.2247(9) and c =8.0977(8) A. It has been estimated that the first-order structural transition from the low-temperature form (Mn 5 Si 3 type) to the high-temperature form is above 1265°C but below 1400°C. Antimony atoms on one of the two sites can be partially substituted by Ni atoms, which results in a Y 5 Ni x Sb 3− x formula with 0≤ x 5 Ni 0.38 Sb 2.62 crystal, obtained by annealing a sample in an induction furnace for 2 h at 1265°C. All high-temperature nickel-containing phases Y 5 Ni x Sb 3− x with the ordered Yb 5 Sb 3 structure undergo a decomposition to low-temperature Y 5 Sb 3 (Mn 5 Si 3 type) and a nickel-containing phase, when annealed at 800°C. Extended Huckel tight-binding calculations show that substitution of Sb by Ni is unfavorable with respect to the Y–Sb bonding. The structure of Y 5 Ni x Sb 3− x is stabilized by the configurational entropy, resulting from a statistical mixture of Sb and Ni atoms on one site. Choice of an Sb site to be occupied by Ni is dictated by bonding maximization in the substituted structure. The high-temperature Y 5 Sb 3 and Y 5 Ni 0.38 Sb 2.62 phases are weak Pauli paramagnets.

High-field behavior of the spin gap compound Sr2Cu(BO3)2

We report magnetization and heat capacity measurements of single crystal samples of the spin gap compound

Crystal structure of rare-earth-rich platinum pnictides RE5Pt2X (RE=Y, Gd, Tb, Dy, Ho, Er, Tm, Lu; X=Sb, Bi) and magnetic properties of Er5Pt2Bi

{\mathrm{Sr}}_{2}\mathrm{Cu}{(\mathrm{B}{\mathrm{O}}_{3})}_{2}

Magnetic-field-induced quantum critical point in YbPtIn and Yb Pt 0.98 In single crystals

. Low-field data show that the material has a singlet ground state comprising dimers with intradimer coupling

Symmetry‐Breaking Transitions in SmCu1+δAs2—χPχ(δ = 0 — 0.2, χ = 0 — 2). Effect of P and Additional Cu Atoms on Crystal Structures and Magnetic Properties

J=100\phantom{\rule{0.3em}{0ex}}\mathrm{K}

Magnetic Phase Diagram of Ce2Fe17

. High field data reveal the role of weak interdimer coupling. For fields that are large compared to the spin gap, triplet excitations are observed for significantly smaller fields than predicted for isolated dimers, indicating that weak interdimer coupling leads to triplet delocalization. High field magnetization behavior at low temperatures suggests additional cooperative effects.

Modulated Crystal Structure and Electronic Properties of Semiconductor Cu47Si91P144

Abstract Fifteen new rare-earth antimonides and bismuthides RE 5 Pt 2 X (see Table 1 ) have been synthesized and characterized by X-ray powder methods. The compounds are isostructural to previously reported RE 5 M 2 X pnictides and adopt the Mo 5 B 2 Si structure (space group I4/mcm , an ordered version of Cr 5 B 3 ). The RE 5 M 2 X series now includes 47 antimonides and bismuthides with M=Ni, Pd, Pt and the heavy rare earths except for ytterbium. Atomic and thermal parameters have been refined and the magnetic susceptibility was measured for Er 5 Pt 2 Bi.

Magnetic phase diagram ofCe2Fe17

Detailed anisotropic (H

Zn13Sb10: A Structural and Landau Theoretical Analysis of Its Phase Transitions

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Symmetry-Breaking Transitions from GdCuAs2 through GdCuAs1.15P0.85 to GdCuP2.20: Crystal Structure, Application of Landau Theory, Bonding, Magnetic and Electrical Properties

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