William M. Yuhasz

  • Citations Per Year
Learn More
Menlo Park, California 94025, USA 2School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom 3Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA 4Departments of Physics and Electrical Engineering, University of Colorado Denver, Denver, Colorado 80217, USA 5Department of(More)
We have observed an unexpected enhancement of the lower critical field H(c1)(T) and the critical current I(c)(T) deep in the superconducting state below T approximately 0.6 K (T/T(c) approximately 0.3) in the filled skutterudite heavy fermion superconductor PrOs(4)Sb(12). From a comparison of the behavior of H(c1)(T) with that of the heavy fermion(More)
Extended x-ray absorption fine structure (EXAFS) experiments have been carried out on PrRu(4)P(12) and PrOs(4)P(12) to study the metal-to-insulator (MI) phase transition in PrRu(4)P(12). No Pr displacement was observed across the MI transition temperature from the EXAFS data. Instead, our EXAFS data clearly show that a Ru displacement is associated with(More)
The physical properties of single crystals of filled skutterudite compounds EuT4Sb12 (T = Fe, Ru, Os) have been investigated by means of x-ray diffraction, electrical resistivity, specific heat, magnetization, and x-ray absorption spectroscopy measurements. The Eu-based materials crystallize in the LaFe4P12-type structure (space group Im3̄). A small Eu(More)
Electrical resistivity, specific heat, and magnetization measurements to temperatures as low as 80 mK and magnetic fields up to 16 T were made on the filled skutterudite compound PrOs4As12. The measurements reveal the presence of two ordered phases at temperatures below approximately 2.3 K and in fields below approximately 3 T. Neutron-scattering(More)
The filled skutterudite compound PrOs₄P₁₂ was synthesized in single-crystal form using a molten metal flux growth technique. Low-temperature magnetization, specific heat, and electrical resistivity measurements showed no indication of a phase transition down to 0.1 K but had features indicative of crystalline electric field (CEF) effects. Analyses of these(More)
In this paper we examine the elastic (c′ and c44) and magnetostrictive (λ100 and λ111) behaviors of Fe100−xGex for 4<<em>x<18, quantities used further to find the fundamental magnetoelastic coupling constants b1 and b2 at room temperature. The x dependence ofb1 and b2 for Fe100−xGex is contrasted to those of Fe100−xGax and Fe100−xAlx. While the rhombohedral(More)
D. Sisan, W. Bauer, O. Bjarki, D. J. Magestro, A. Nadasen, R. Pak, K. A. G. Rao, N. T. B. Stone, A. M. Vander Molen, G. D. Westfall, and W. Yuhasz Department of Natural Sciences, University of Michigan, Dearborn, Michigan 48128-1491 National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East(More)
The results of inelastic neutron scattering provide a solution for the crystal field level scheme in PrOs4Sb12, in which the ground state in the cubic crystal field potential of T(h) symmetry is a Gamma(1) singlet. The conduction electron mass enhancement is consistent with inelastic exchange scattering, and we propose that inelastic quadrupolar, or(More)
Both components of the tetragonal magnetoelastic constant b1: the saturation magnetostriction, λγ,2 = (3/ 2)λ100, and the magnetic-field saturated shear elasticity, c′ = (c11−c12)/2, were investigated over a wide temperature range for the magnetostrictiveFe1−x−yGaxGey alloys, (x+y ≅ 0.125, 0.185, and 0.245; x/y ≅ 1 and 3). The magnetostriction was measured(More)
  • 1