Magnetic Properties of RCoGe<sub>3</sub>(R: Ce, Pr, and Nd) and Strong Anisotropy of the Upper Critical Field in Non-centrosymmetric Compound CeCoGe<sub>3</sub>

Méasson, Marie-Aude; Muranaka, Hiroshi; Kawai, Takazumi; Ota, Yoshiyuki; Sugiyama, Kiyohiro; Hagiwara, Masayuki; Kindo, Koichi; Takeuchi, Tetsuya; Shimizu, Katsuya; Honda, Fuminori; Settai, Rikio; Ōnuki, Yoshichika

doi:10.1143/jpsj.78.124713

Cited by 41 publications

(23 citation statements)

References 40 publications

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“…The Nd-Ge distances range from 3.142 Å to 3.296 Å, falling in the Nd-Ge bond range 3.1-3.4 Å observed in NdCo 0.83 Ge 2 and NdCoGe 3 [27,28]. The Nd-Nd distances within these slabs range from 3.5 -3.9Å.…”

Section: Structurementioning

confidence: 82%

Nd8Co4−Al Ge2C3: A case study in flux growth of lanthanide-rich intermetallics

Zhou

Latturner

2016

Journal of Solid State Chemistry

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The intermetallic Nd 8 Co 4-x Al x Ge 2 C 3 (x ≈ 0.65) was prepared from reaction of germanium and carbon in Nd/Co eutectic flux in an alumina crucible. This phase exhibits a new structure type in orthorhombic space group Pbcm, with unit cell parameters a = 8.001(1) Å, b = 11.696 (2) Å, c = 15.020(3) Å (Z = 4; R 1 = 0.0234). The structure features germanium-centered neodymium clusters Ge@Nd 9 which share faces to form layers separated by zigzag chains of cobalt atoms capped by carbon. Density of states calculations confirm that this compound is metallic, and indicate that the cobalt should not have a magnetic moment. This is supported by magnetic susceptibility measurements which show a low temperature ferromagnetic ordering at T C = 50 K due to the Nd 3+ ions. Magnetization field dependence studies on single crystals indicate this compound is a strong ferromagnet with large anisotropy; the Nd 3+ magnetic moments align along the a-axis.

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Section: Structurementioning

confidence: 82%

Nd8Co4−Al Ge2C3: A case study in flux growth of lanthanide-rich intermetallics

Zhou

Latturner

2016

Journal of Solid State Chemistry

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“…CeTX 3 (T: Co, Rh, Ir, X: Si, Ge) compounds are also characterized as non-centrosymmetric superconductors. [10][11][12][13][14][15] These compounds, except CeCoSi 3 , order antiferromagnetically and become superconductive under pressure (T N ! 0 for P !…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Superconducting Properties of CeRhGe₂and CePtSi₂

et al. 2011

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We synthesized a new compound of CeRhGe 2 with the orthorhombic CeNiSi 2 -type structure. By measuring the electrical resistivity, magnetic susceptibility, magnetization, specific heat, and neutron scattering for single crystals, CeRhGe 2 was found to order antiferromagnetically below T N ¼ 7:6 K with an ordered moment of 1.3 B /Ce oriented along the magnetic easy-axis of the c-axis. Similar measurements were also carried out for CePtSi 2 single crystals. From the experimental results of anisotropic magnetic susceptibility and magnetization, the crystalline electric field (CEF) scheme was obtained for CeRhGe 2 and CePtSi 2 , together with the similar compound CeNiGe 2 . Furthermore, we carried out pressure experiments by measuring the electrical resistivity of CePtSi 2 and CeRhGe 2 . In the quantum critical region where the Néel temperature becomes zero, we observed superconductivity in CePtSi 2 and most likely CeRhGe 2 , at 1.5 and 7.1 GPa, respectively. The upper critical field of CePtSi 2 was found to be highly anisotropic with respect to the three principal field directions.

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“…For spin-singlet superconductors, these properties include an enhanced paramagnetic depairing field and a non-vanishing spin-susceptibility at zero temperature. [8][9][10][11][12][13][14][15][16][17][18] In the following, we initially present the electronic structure of SrPtAs and then turn to an examination of the superconducting state in this material.…”

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confidence: 99%