Crystal structure, chemical bonding and magnetic properties of the new antimonides Ce2Ir3Sb4, La2Ir3Sb4, and Ce2Rh3Sb4

Cardoso‐Gil, Raúl; Caroca‐Canales, N.; Budnyk, S.; Schnelle, Walter

doi:10.1524/zkri.2011.1392

Cited by 6 publications

(8 citation statements)

References 25 publications

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“…It can be seen from the analysis that the structure we derived is isomorphic with Ce 2 Rh 3 Sb 4 that was reported previously by polycrystal studies. 19,20 As expected, the lattice parameters a, b, and c of Ce…”

Section: Resultssupporting

confidence: 80%

La$_2$Rh$_{3+δ}$Sb$_4$: A new ternary superconducting rhodium-antimonide

Cheng,

Xie,

Zou

et al. 2022

Preprint

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A new ternary rhodium-antimonide La 2 Rh 3+δ Sb 4 (δ ≈ 0.12) has been synthesized by a Bi-flux method. It crystallizes in the orthorhombic Pr 2 Ir 3 Sb 4 -type structure, with space group P nma (No. 62). The cell parameters are: a = 16.2667(5) Å, b = 4.5858(2) Å, c = 11.0068(4) Å, α = β = γ = 90 • , and Z = 4. The crystalline structure appears as stacking the two dimensional RhSb 4 -and RhSb 5 -polyhedra networks along b axis, and the La atoms embed in the cavities of these networks. Band structure calculations confirm it a multi-band metal with a van-Hove singularity like feature at the Fermi

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Section: Resultssupporting

confidence: 80%

La$_2$Rh$_{3+δ}$Sb$_4$: A new ternary superconducting rhodium-antimonide

Cheng,

Xie,

Zou

et al. 2022

Preprint

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“…Lu 2 Pt 3 Al 4 was also found to crystallize in the orthorhombic crystal system with space group Pnma. A comparison with the Pearson database [3], using Pearson code oP36 and Wyckoff sequence c 9 , indicated isotypism with Ce 2 Ir 3 Sb 4 [26,27]. The structure was refined on F 2 with anisotropic displacement parameters for all atoms.…”

Section: Structure Refinementsmentioning

confidence: 99%

“…Refinement as orthorhombic trilling, as suggested by the translationengleiche symmetry reduction of index 3, is not necessary because the orthorhombic crystal system was found directly by the indexing routine. [26,27]. In the following paragraph, Lu 2 Pt 3 Al 4 will be used for the structure description.…”

Section: Structure Refinementsmentioning

confidence: 99%

Crystal Structure, Spectroscopic Investigations, and Physical Properties of the Ternary Intermetallic REPt2Al3 (RE = Y, Dy–Tm) and RE2Pt3Al4 Representatives (RE = Tm, Lu)

et al. 2018

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Abstract:The REPt 2 Al 3 compounds of the late rare-earth metals (RE = Y, Dy-Tm) were found to crystallize isostructural. Single-crystal X-ray investigations of YPt 2 Al 3 revealed an orthorhombic unit cell (a = 1080.73(6), b = 1871.96(9), c = 413.04(2) pm, wR2 = 0.0780, 942 F 2 values, 46 variables) with space group Cmmm (oC48; q 2 pji 2 hedb). A comparison with the Pearson database indicated that YPt 2 Al 3 forms a new structure type, in which the Pt and Al atoms form a [Pt 2 Al 3 ] δ− polyanion and the Y atoms reside in the cavities within the framework. Via a group-subgroup scheme, the relationship between the PrNi 2 Al 3 -type structure and the new YPt 2 Al 3 -type structure was illustrated. The compounds with RE = Dy-Tm were characterized by powder X-ray diffraction experiments. While YPt 2 Al 3 is a Pauli-paramagnet, the other REPt 2 Al 3 (RE = Dy-Tm) compounds exhibit paramagnetic behavior, which is in line with the rare-earth atoms being in the trivalent oxidation state. DyPt 2 Al 3 and TmPt 2 Al 3 exhibit ferromagnetic ordering at T C = 10.8(1) and 4.7(1) K and HoPt 2 Al 3 antiferromagnetic ordering at T N = 5.5(1) K, respectively. Attempts to synthesize the isostructural lutetium compound resulted in the formation of Lu 2 Pt 3 Al 4 (Ce 2 Ir 3 Sb 4 -type, Pnma, a = 1343.4(2), b = 416.41(8), c = 1141.1(2) pm), which could also be realized with thulium. The structure was refined from single-crystal data (wR2 = 0.0940, 1605 F 2 values, 56 variables). Again, a polyanion with bonding Pt-Al interactions was found, and the two distinct Lu atoms were residing in the cavities of the [Pt 3 Al 4 ] δ-framework. X-ray photoelectron spectroscopy (XPS) measurements were conducted to examine the electron transfer from the rare-earth atoms onto the polyanionic framework.

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“…Multiple compounds have been found to crystallize in this 234 phase, such as Ln 2 Ir 3 Sb 4 (Ln = La, Ce, Pr, Nd) [18] and Ce 2 Rh 3 Sb 4 [19]. In particular, previous studies on the rhodium-antimonide Ce 2 Rh 3 Sb 4 based on polycrystal samples manifested that the local moments of Ce 3+ remain paramagnetic down to 2 K [19], implying that it probably sits nearby a quantum critical point. Single crystals with high quality are needed to better understand its ground state.…”

Section: Future Perspectivesmentioning

confidence: 97%

La₂Rh 3+δ Sb₄: a new ternary superconducting rhodium-antimonide

et al. 2022

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Rhodium-containing compounds offer a fertile playground to explore novel materials with superconductivity and other fantastic electronic correlation effects. A new ternary rhodium-antimonide La2Rh3+δSb4(δ ≈ 1/8) has been synthesized by a Bi-flux method. It crystallizes in the orthorhombic Pr2Ir3Sb4-like structure, with space group Pnma (No. 62). The crystalline structure appears as stacking the two dimensional RhSb4- and RhSb5-polyhedra networks along b axis, and the La atoms embed in the cavities of these networks. Band structure calculations confirm it as a multi-band metal with a van-Hove singularity like feature at the Fermi level, whose density of states are mainly of Rh-4d and Sb-5p characters. The calculations also implies that the redundant Rh acts as charge dopant. Superconductivity is observed in this material with onset transition at Ton c ≈ 0.8 K. Ultra-low temperature magnetic susceptibility and specific heat measurements suggest that it is an s-wave type-II superconductor. Our work may also imply that the broad Ln 2 Tm 3+δSb4(Ln=Rare earth, Tm=Rh, Ir...) family may host new material bases where new superconductors, quantum magnetism and other electronic correlation effects could be found.

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Crystal structure, chemical bonding and magnetic properties of the new antimonides Ce₂Ir₃Sb₄, La₂Ir₃Sb₄, and Ce₂Rh₃Sb₄

Cited by 6 publications

References 25 publications

La$_2$Rh$_{3+δ}$Sb$_4$: A new ternary superconducting rhodium-antimonide

La$_2$Rh$_{3+δ}$Sb$_4$: A new ternary superconducting rhodium-antimonide

Crystal Structure, Spectroscopic Investigations, and Physical Properties of the Ternary Intermetallic REPt2Al3 (RE = Y, Dy–Tm) and RE2Pt3Al4 Representatives (RE = Tm, Lu)

La₂Rh 3+δ Sb₄: a new ternary superconducting rhodium-antimonide

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Crystal structure, chemical bonding and magnetic properties of the new antimonides Ce2Ir3Sb4, La2Ir3Sb4, and Ce2Rh3Sb4

Cited by 6 publications

References 25 publications

La$_2$Rh$_{3+δ}$Sb$_4$: A new ternary superconducting rhodium-antimonide

La$_2$Rh$_{3+δ}$Sb$_4$: A new ternary superconducting rhodium-antimonide

Crystal Structure, Spectroscopic Investigations, and Physical Properties of the Ternary Intermetallic REPt2Al3 (RE = Y, Dy–Tm) and RE2Pt3Al4 Representatives (RE = Tm, Lu)

La2Rh 3+δ Sb4: a new ternary superconducting rhodium-antimonide

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Crystal structure, chemical bonding and magnetic properties of the new antimonides Ce₂Ir₃Sb₄, La₂Ir₃Sb₄, and Ce₂Rh₃Sb₄

La₂Rh 3+δ Sb₄: a new ternary superconducting rhodium-antimonide