Formation and low temperature physics of

Bauer, E.; Hilscher, G.; Kaldarar, H.; Michor, H.; Scheidt, E.‐W.; Rogl, P.; Gribanov, A. V.; Seropegin, Yu. D.

doi:10.1016/j.jmmm.2006.10.273

Cited by 9 publications

(10 citation statements)

References 4 publications

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“…Intermetallic compounds that contain rare-earth elements with two stable oxidation states (specifically Ce, Eu, Sm, and Yb) exhibit a wide variety of interesting and unusual physical properties including superconductivity, 1,2 heavy fermion behavior, 3 the Kondo effect, 4−6 and non-Fermi liquid behavior. 7 Of particular interest for our investigation of the Eu−Ir−In system are the so-called heavy fermion materials, intermetallics that exhibit carrier effective masses (m*) far larger than can be explained by the weakly interacting electron models that describe typical metals.…”

Section: ■ Introductionmentioning

confidence: 99%

Synthesis, Structure, and Complex Magnetism of MIr₂In₈ (M = Eu, Sr)

et al. 2016

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We report the synthesis, crystal structure, and physical properties of two new polar intermetallic compounds, EuIr2In8 and SrIr2In8. Both were synthesized in good yield using In metal as a reactive flux medium, enabling the growth of large crystals for physical property measurements. They crystallize in the orthorhombic space group Pbam with the CeFe2Al8 structure type, which is sometimes also referred to as the CaCo2Al8 structure type. The two analogues have unit cell parameters of a = 13.847(3) Å, b = 16.118(3) Å, and c = 4.3885(9) Å for M = Eu and a = 13.847(3) Å, b = 16.113(3) Å, and c = 4.3962(9) Å for M = Sr at room temperature. SrIr2In8 is a diamagnetic metal with no local magnetic moments on either the Sr or Ir sites, and the diamagnetic contribution from core electrons overwhelms the expected Pauli paramagnetism normally seen in intermetallic compounds. Magnetism in EuIr2In8 is dominated by the local Eu moments, which order antiferromagnetically at 5 K in low applied fields. Increasing the field strength depresses the magnetic ordering temperature and also induces a spin reorientation at lower temperature, indicating complex competing magnetic interactions. Low-temperature heat capacity measurements show a significant enhancement of the Sommerfeld coefficient in EuIr2In8 relative to that in SrIr2In8, with estimated values of γ = 118(3) and 18.0(2) mJ mol(-1) K(-2), respectively.

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Section: ■ Introductionmentioning

confidence: 99%

Synthesis, Structure, and Complex Magnetism of MIr₂In₈ (M = Eu, Sr)

et al. 2016

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“…Following the pioneering work on the CePt 3 Si compound by Bauer et al, a wide variety of noncentrosymmetric superconductors have been reported, e.g., CeRhSi 3 , , CeIrSi 3 , , CeCoGe 3 , BaPtSi 3 , CaIrSi 3 , − CaPtSi 3 , , UIr, BiPd, Li 2 Pd 3 B, − Li 2 Pt 3 B, ,,, Ru 7 B 3 , , Mg 10 Ir 19 B 16 , , Mo 3 Al 2 C, , Rh 2 Ga 9 , , Ir 2 Ga 9 , , LaNiC 2 , , Y 2 C 3 , , La 2 C 3 , etc. In particular, the Ce-based heavy-fermion systems have attracted attention, because they exhibit an unusually large upper critical field H C2 far beyond the Pauli limit. , However, the participation of the f-electrons may make the issue more complicated, because the electronic correlation screens out the not fully understood nature of noncentrosymmetric superconductivity.…”

Section: Introductionmentioning

confidence: 99%

SrAuSi₃: A Noncentrosymmetric Superconductor

et al. 2014

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A novel strontium−gold silicide (SrAuSi 3 ) was successfully synthesized for the first time using a high-pressure technique, at ∼6 GPa. X-ray Rietveld analysis and scanning transmission electron microscopy studies clearly revealed that SrAuSi 3 crystallizes in a BaNiSn 3 -type structure, in space group I4mm with the following lattice parameters: a = 4.4090(1) Å, and c = 9.9475(3) Å. The structure was found not to have inversion symmetry in real space. From direct measurements of polycrystalline SrAuSi 3 , the electrical resistivity was zero, the static magnetic susceptibility was almost a full volume Meissner diamagnetic signal, and the specific heat exhibited a sharp jump, all of which were accompanied by a phase transition due to bulk superconductivity at a critical temperature (T C ) of 1.54 K. The SrAuSi 3 compound is the first noncentrosymmetric superconductor that includes Au as a principal constituent element.

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“…For instance, a complex series of phase transitions appear in the mixed-valent EuPtP, i.e., three magnetic transitions at 25, 8, and 0.9 K, following two first-order phase transitions at 235 and 190 K, upon cooling, although these transitions have not yet been fully understood in detail. Superconductivity is observed in related Pt compounds such as SrPtAs, SrPt 2 Ge 2 , CaPtSi 3 , SrPtGe 3 , Ca 2 Pt 3 Si 5 , and Li 2 Pt 3 B as well as in the strongly correlated electron systems UPt 3 and CePt 3 Si . The superconductivity in the noncentrosymmetric CaPtSi 3 , SrPtGe 3 , and Li 2 Pt 3 B systems, particularly in the heavy Fermion CePt 3 Si compound, has generated great impact in the condensed matter physics field.…”

Section: Introductionmentioning

confidence: 99%

“…Superconductivity is observed in related Pt compounds such as SrPtAs, SrPt 2 Ge 2 , CaPtSi 3 , SrPtGe 3 , Ca 2 Pt 3 Si 5 , and Li 2 Pt 3 B as well as in the strongly correlated electron systems UPt 3 and CePt 3 Si . The superconductivity in the noncentrosymmetric CaPtSi 3 , SrPtGe 3 , and Li 2 Pt 3 B systems, particularly in the heavy Fermion CePt 3 Si compound, has generated great impact in the condensed matter physics field.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure, and Superconductivity in the New-Structure-Type Compound: SrPt₆P₂

Jawdat

et al. 2014

Inorg. Chem.

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A metal-rich ternary phosphide, SrPt(6)P(2), with a unique structure type was synthesized at high temperatures. Its crystal structure was determined by single-crystal X-ray diffraction [cubic space group Pa3̅; Z = 4; a = 8.474(2) Å, and V = 608.51(2) Å(3)]. The structure features a unique three-dimensional anionic (Pt(6)P(2))(2-) network of vertex-shared Pt(6)P trigonal prisms. The Sr atoms occupy a 12-coordinate (Pt) cage site and form a cubic close-packed (face-centered-cubic) arrangement, and the P atoms formally occupy tetrahedral interstices. The metallic compound becomes superconducting at 0.6 K, as evidenced by magnetic and resistivity measurements.

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Formation and low temperature physics of

Cited by 9 publications

References 4 publications

Synthesis, Structure, and Complex Magnetism of MIr₂In₈ (M = Eu, Sr)

Synthesis, Structure, and Complex Magnetism of MIr₂In₈ (M = Eu, Sr)

SrAuSi₃: A Noncentrosymmetric Superconductor

Synthesis, Structure, and Superconductivity in the New-Structure-Type Compound: SrPt₆P₂

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Formation and low temperature physics of

Cited by 9 publications

References 4 publications

Synthesis, Structure, and Complex Magnetism of MIr2In8 (M = Eu, Sr)

Synthesis, Structure, and Complex Magnetism of MIr2In8 (M = Eu, Sr)

SrAuSi3: A Noncentrosymmetric Superconductor

Synthesis, Structure, and Superconductivity in the New-Structure-Type Compound: SrPt6P2

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Synthesis, Structure, and Complex Magnetism of MIr₂In₈ (M = Eu, Sr)

Synthesis, Structure, and Complex Magnetism of MIr₂In₈ (M = Eu, Sr)

SrAuSi₃: A Noncentrosymmetric Superconductor

Synthesis, Structure, and Superconductivity in the New-Structure-Type Compound: SrPt₆P₂