12039-34-8Relevant articles and documents
Magnetic properties of an anomalous phase transition around 5 K in YbSb
Hashi,Oyamada,Maegawa,Goto,Li,Suzuki,Donni,Hulliger
, p. 159 - 160 (1999)
NMR measurements on 121Sb have been performed to clarify the magnetic properties of an anomalous phase transition around 5 K in YbSb. The external magnetic field dependence of the NMR linewidth was measured above and below the transition temper
Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb
Oyamada,Kuwahara,Ohoyama,Iwasa,Kohgi,Maegawa
, p. 766 - 767 (2007)
Inelastic neutron scattering measurements were performed to study the excitation spectra of a quadrupolar ordering compound YbSb. We observed the three peaks (12.5, 17 and 21 meV) around Γ6 - Γ8 excitations far above the quadrupolar ordering temperature (TQ). This result suggests that the magnetic excitations have a dispersion rather than the splitting of Γ8 states at high temperatures. We also observed the strong q dependence in q scans at energy = 1 meV above TQ. The observed q dependence above TQ suggests that the theoretical approach beyond the molecular field approximation is required in order to understand the magnetic properties of Yb monopnictides.
Specific heat of ytterbium monopnictides under magnetic fields
Li, D. X.,Oyamada, A.,Shida, H.,Suzuki, T.,Kasuya, T.,et al.
, (1993)
The specific heat of the ytterbium monopnictides YbX (X = N, P, As, Sb) measured in magnetic fields up to 10 T shows a different field dependence of the broad peak around 5 K in the four compounds. The zero-field data are analyzed with a new model including both Kondo effect and magnetic excitations.
Mixing-typed antiferroquadrupolar ordering in YbSb
Hashi, Kenjiro,Kitazawa, Hideaki,Oyamada, Akira,Katori, Hiroko Aruga
, p. 259 - 266 (2001)
Specific heat and magnetization measurements have been performed with a low carrier heavy fermion compound YbSb. Successive phase transitions at 0.5 K and 5 K were observed by specific heat measurements under external magnetic fields up to 12 T. The transition temperature at 5 K increases with increasing external magnetic field. The magnetization measurements indicate the existence of field induced magnetic ordered moments at 5 K. These magnetic properties of the phase transition at 5 K are discussed in terms of a mixing-typed antiferroquadrupolar ordering model with a Γ6 Kramers doublet as the crystalline electric field ground state.
New ternary La2Sb-type compounds, ScRESb (RE = La, Ce, Pr, Nd, Sm, Tb), and the oxygen stuffed variant Sc4Yb4Sb 4O
Nuss, Juergen,Jansen, Martin
, p. 713 - 718 (2014/04/17)
Scandium rare-earth metal antimonides, ScRESb (RE = La, Ce, Pr, Nd, Sm, Tb) were synthesized from scandium metal and binary RESb at 1770 K in tantalum ampoules. According to X-ray analyses of the crystal structures, they adopt the tetragonal ScCeSi-type of structure (space group I4/mmm, Pearson code tI12), a variant of La2Sb, with a fully ordered atom distribution. Especially in ScSmSb and ScTbSb, the scandium atoms are distorted from an ideal 4 4 net in a way to form Sc nets of squares and rhombi in order to adjust to the lattice shrinkage in the ab plane, caused by the lanthanide contraction. Finally the structure changes from La2Sb to Sc 2Sb-type (anti-PbFCl-type), when terbium is replaced by dysprosium. The respective compound with ytterbium was only found when stoichiometric amounts of oxygen were present, resulting in Sc4Yb4Sb 4O, a La2Sb-type variant stuffed with oxygen. A structure field map, based on specific geometric parameters, easily allows for distinguishing between oxygen stuffed and oxygen-free compounds. Magnetic susceptibility measurements of ScCeSb, ScPrSb, and ScNdSb indicate Curie-Weiss behavior with ferromagnetic exchange coupling underlying. The magnetic moments correspond to the expected values for RE3+. Copyright
Synthesis, structure, magnetic and transport properties of LnFeSb 3 (Ln = Pr, Nd, Sm, Gd, and Tb) - Tuning of anisotropic long-range magnetic order as a function of Ln
Phelan, W. Adam,Nguyen, Giang V.,Karki, Amar B.,Young, David P.,Chan, Julia Y.
, p. 6403 - 6409 (2010/09/06)
Single crystals of LnFeSb3 (Ln = Pr, Nd, Sm, Gd, and Tb) have been grown from excess Sb flux. The crystal structure consists of ∞2[FeSb2] octahedra separated by layers of Ln atoms and nearly square planar nets of ∞ 2[Sb2]. These compounds are metallic and display anisotropic magnetic properties. Long-range antiferromagnetic order is observed in the Sm, Gd, and Tb samples when the magnetic field is applied along the crystallographic a-axis. Evidence of magnetic ordering in all the samples is observed for the field applied parallel to the layers. The magnetic properties are well-described by considering only the magnetic interactions between the Ln 4f moments, with no contribution from the Fe sublattice. Herein, we report the crystal growth, structure, magnetization, transport, and chemical stabilities of the title compounds. The Royal Society of Chemistry.
Phase relations and properties of alloys in the Yb-Sb system
Abulkhaev
, p. 431 - 435 (2008/10/08)
Differential thermal analysis, x-ray diffraction, and microstructural analysis were used to map out the Yb-Sb phase diagram. The compounds β-Yb5Sb3, Yb11Sb10, YbSb, and YbSb2 were found to form peritectically at 1813 ± 15, 1678 ± 10, 1348 ± 10, and 1078 ± 5 K, respectively. Yb4Sb3 melts congruently at 1953 ± 15 K. One eutectoid and two eutectic reactions were identified in the system. The composition dependences of magnetic susceptibility, electrical resistivity, and thermoelectric power are consistent with the phase-diagram data.
121Sb MOESSBAUER INVESTIGATION OF THE RARE EARTH ANTIMONIDES.
Holbourn,Woodhams
, p. 186 - 194 (2008/10/09)
**1**2**1Sb Moessbauer spectra have been obtained for the series R Sb (R equals La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, and Yb) at 78 K and for a selection of the compounds at 5. 5 K. At 78 K all the spectra show a single line. The isomer shifts are close to that of InSb and show a linear increase with increasing atomic number of the rare earth ion. Many of the rare earth antimonides exhibit a variety of magnetic and structural phase transitions at a sufficiently low temperature. Spectra obtained at 5. 5 K are interpreted in terms of these phase transitions.