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Discovery of β-LnNiSb3 (Ln = La, Ce): Crystal growth, structure, and magnetic and transport behavior

  • Author(s): Thomas, EL
  • Gautreaux, DP
  • Lee, HO
  • Fisk, Z
  • Chan, JY
  • et al.

Published Web Location Commons Attribution 4.0 International Public License

A new polymorph of CeNiSb3 has been grown from a Sn flux and characterized by single-crystal X-ray diffraction. β-CeNiSb3 crystallizes in the orthorhombic space group Pbcm (No. 57) with Z = 8. The unit cell parameters are a = 12.9170(2) Å, b = 6.1210(5) Å, c = 12.0930(6) Å, and V = 956.13(9) Å3. Its layered structure contains structural motifs similar to that of the first form of CeNiSb 3 and consists of Ce atoms inserted between anionic layers of nearly square ∞2[Sb] nets and distorted ∞2[NiSb2] octahedra. We report the synthesis, magnetization, electrical resistivity, and specific heat of the new form of CeNiSb3 and compare the structures and physical properties of both polymorphs. © 2007 American Chemical Society.

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