View in EDS

Order/disorder in YbNi1±xGa2∓x (x ≤ 0.08): Crystal structure, thermal expansion and magnetic properties

Saved in:
Bibliographic Details
Title: Order/disorder in YbNi1±xGa2∓x (x ≤ 0.08): Crystal structure, thermal expansion and magnetic properties
Authors: Vasylechko, L.1,2 crystal-lov@polynet.lviv.ua, Burkhardt, U.1, Schnelle, W.1, Borrmann, H.1, Haarmann, F.3, Senyshyn, A.4, Trots, D.5, Hiebl, K.6, Grin, Yu.1 grin@cpfs.mpg.de
Source: Solid State Sciences. Jun2012, Vol. 14 Issue 6, p746-760. 15p.
Subjects: Crystal structure, Chemical systems, Ytterbium compounds, Magnetic properties of metals, Thermal expansion, Ternary phase diagrams, Fusion (Phase transformation), Annealing of metals
Abstract: Abstract: The ternary phase (x ≤ 0.08) has been synthesised from the elements by high-frequency melting in argon atmosphere with subsequent annealing at 600 °C or 800 °C. From X-ray powder and single crystal diffraction investigations the phase is found to be isotypic with MgCuAl2: space group Cmcm, Z = 4, a = 4.0987–4.1147 Å, b = 9.8516–9.8620 Å, c = 6.5995–6.5916 Å for the specimens annealed at 800 °C. The quantum chemical analysis of atomic interactions in YbNiGa2 shows Ga and Ni forming a network polyanion with covalent bonds, while ytterbium cations are located within the cavities of the polyanion. From the magnetic susceptibility data and L III XAS spectra, the 4f 13 electronic configuration of ytterbium (Yb3+) was established in samples with nickel excess (comparing to x = 0), whereas an additional small contribution of the 4f 14 configuration is found for compositions with the gallium excess. No change in the ytterbium valence state was detected down to 5 K. In situ low- and high-temperature powder diffraction investigations applying both X-ray synchrotron radiation and neutrons revealed no change in structure within the broad temperature range 3.4–1173 K. Both synchrotron and neutron diffraction data show smooth, but strongly anisotropic variation of lattice parameters below 200 K: the thermal contraction ratio in [100], [010] and [001] directions is 4.5:3.2:1. The temperature dependence of atomic displacement parameters indicates a certain amount of static disorder for all atomic species in the crystal. At least two distinct sites with varying charge distributions in the vicinity of the Ga atoms are confirmed by 69,71Ga NMR spectroscopy. [Copyright &y& Elsevier]
Copyright of Solid State Sciences is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 75170816
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Order/disorder in YbNi<subscript>1±x</subscript>Ga<subscript>2∓x</subscript> (x ≤ 0.08): Crystal structure, thermal expansion and magnetic properties
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Vasylechko%2C+L%2E%22">Vasylechko, L.</searchLink><relatesTo>1,2</relatesTo><i> crystal-lov@polynet.lviv.ua</i><br /><searchLink fieldCode="AR" term="%22Burkhardt%2C+U%2E%22">Burkhardt, U.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Schnelle%2C+W%2E%22">Schnelle, W.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Borrmann%2C+H%2E%22">Borrmann, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Haarmann%2C+F%2E%22">Haarmann, F.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Senyshyn%2C+A%2E%22">Senyshyn, A.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Trots%2C+D%2E%22">Trots, D.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Hiebl%2C+K%2E%22">Hiebl, K.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Grin%2C+Yu%2E%22">Grin, Yu.</searchLink><relatesTo>1</relatesTo><i> grin@cpfs.mpg.de</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Solid+State+Sciences%22">Solid State Sciences</searchLink>. Jun2012, Vol. 14 Issue 6, p746-760. 15p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Crystal+structure%22">Crystal structure</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+systems%22">Chemical systems</searchLink><br /><searchLink fieldCode="DE" term="%22Ytterbium+compounds%22">Ytterbium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+properties+of+metals%22">Magnetic properties of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+expansion%22">Thermal expansion</searchLink><br /><searchLink fieldCode="DE" term="%22Ternary+phase+diagrams%22">Ternary phase diagrams</searchLink><br /><searchLink fieldCode="DE" term="%22Fusion+%28Phase+transformation%29%22">Fusion (Phase transformation)</searchLink><br /><searchLink fieldCode="DE" term="%22Annealing+of+metals%22">Annealing of metals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The ternary phase (x ≤ 0.08) has been synthesised from the elements by high-frequency melting in argon atmosphere with subsequent annealing at 600 °C or 800 °C. From X-ray powder and single crystal diffraction investigations the phase is found to be isotypic with MgCuAl2: space group Cmcm, Z = 4, a = 4.0987–4.1147 Å, b = 9.8516–9.8620 Å, c = 6.5995–6.5916 Å for the specimens annealed at 800 °C. The quantum chemical analysis of atomic interactions in YbNiGa2 shows Ga and Ni forming a network polyanion with covalent bonds, while ytterbium cations are located within the cavities of the polyanion. From the magnetic susceptibility data and L III XAS spectra, the 4f 13 electronic configuration of ytterbium (Yb3+) was established in samples with nickel excess (comparing to x = 0), whereas an additional small contribution of the 4f 14 configuration is found for compositions with the gallium excess. No change in the ytterbium valence state was detected down to 5 K. In situ low- and high-temperature powder diffraction investigations applying both X-ray synchrotron radiation and neutrons revealed no change in structure within the broad temperature range 3.4–1173 K. Both synchrotron and neutron diffraction data show smooth, but strongly anisotropic variation of lattice parameters below 200 K: the thermal contraction ratio in [100], [010] and [001] directions is 4.5:3.2:1. The temperature dependence of atomic displacement parameters indicates a certain amount of static disorder for all atomic species in the crystal. At least two distinct sites with varying charge distributions in the vicinity of the Ga atoms are confirmed by 69,71Ga NMR spectroscopy. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Solid State Sciences is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=75170816
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.solidstatesciences.2012.03.029
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 746
    Subjects:
      – SubjectFull: Crystal structure
        Type: general
      – SubjectFull: Chemical systems
        Type: general
      – SubjectFull: Ytterbium compounds
        Type: general
      – SubjectFull: Magnetic properties of metals
        Type: general
      – SubjectFull: Thermal expansion
        Type: general
      – SubjectFull: Ternary phase diagrams
        Type: general
      – SubjectFull: Fusion (Phase transformation)
        Type: general
      – SubjectFull: Annealing of metals
        Type: general
    Titles:
      – TitleFull: Order/disorder in YbNi1±xGa2∓x (x ≤ 0.08): Crystal structure, thermal expansion and magnetic properties
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Vasylechko, L.
      – PersonEntity:
          Name:
            NameFull: Burkhardt, U.
      – PersonEntity:
          Name:
            NameFull: Schnelle, W.
      – PersonEntity:
          Name:
            NameFull: Borrmann, H.
      – PersonEntity:
          Name:
            NameFull: Haarmann, F.
      – PersonEntity:
          Name:
            NameFull: Senyshyn, A.
      – PersonEntity:
          Name:
            NameFull: Trots, D.
      – PersonEntity:
          Name:
            NameFull: Hiebl, K.
      – PersonEntity:
          Name:
            NameFull: Grin, Yu.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 06
              Text: Jun2012
              Type: published
              Y: 2012
          Identifiers:
            – Type: issn-print
              Value: 12932558
          Numbering:
            – Type: volume
              Value: 14
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: Solid State Sciences
              Type: main
ResultId 1