Single crystal growth and electronic state of new compounds RPt2Cd20 (R = La-Nd, Sm)

Doto, Hiroshi; Hirose, Yusuke; Honda, Fuminori; Takeuchi, Tetsuya; Haga, Yoshinori; Settai, Rikio

doi:10.1016/j.jallcom.2016.09.077

Cited by 6 publications

(6 citation statements)

References 23 publications

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“…The obtained values of µ eff are 2.60−2.70 µ B /Ce, which are close to that of Ce 3+ ion. The paramagnetic Weiss temperature θ p of CeRh 2 Cd 20 is estimated to be −2.0 K and the small value of θ p is common feature in CeT 2 Cd 20 (T=Ni, Pd, Pt) [6,8].…”

Section: Magnetic Susceptibilitymentioning

confidence: 97%

“…The localized character of the 4 f electrons is observed in CeT 2 Cd 20 (T=Ni, Pd, Pt), by the Curie-Weiss (C-W) type magnetic susceptibility at low temperature, and a magnetic transition is observed in CePt 2 Cd 20 . [5][6][7]. The hybridization effect between 4 f and conduction electrons tends to be weak and gets weaker depending on the X atom, following the order X=Al, Zn and Cd.…”

Section: Introductionmentioning

confidence: 99%

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Substitution Effect for Cd Site in RT₂Cd₂₀ (R = Ce, U)

Takayama

Hirose

Kawano

et al. 2020

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)

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We succeeded in growing single crystal of a new compound CeRh 2 Cd 20 , and investigated the magnetic and transport properties along with substitutional studies. From the electrical resistivity, magnetic susceptibility, and specific heat measurements, CeRh 2 Cd 20 is found to exhibit a magnetic ordering at 0.3 K with a Γ 7 doublet ground state and located at the weak hybridization region in the Doniach phase diagram. The study of substituted compounds CeRh 2 (Cd 1−x Pb x ) 20 and CeRh 2 (Cd 1−x In x ) 20 revealed that Pb and In-substitutions expanded the lattice and slightly enhanced the hybridization effect on CeRh 2 Cd 20 .

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Section: Magnetic Susceptibilitymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Substitution Effect for Cd Site in RT₂Cd₂₀ (R = Ce, U)

Takayama

Hirose

Kawano

et al. 2020

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)

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“…The localized character of the 4f electrons is suggested in CeT 2 Cd 20 (T = Ni, Pd, Pt) [6,7]. CePt 2 Cd 20 shows a magnetic ordering at T 0.26 mag = K [7]. The hybridization effect between f and conduction electrons tends to be weak in order of X = Al, Zn, and Cd.…”

Section: Introductionmentioning

confidence: 94%

“…For X = Zn, CeIr 2 Zn 20 and CeRu 2 Zn 20 exhibit the intermediate valence state and heavyfermion state, respectively [9,10]. The localized character of the 4f electrons is suggested in CeT 2 Cd 20 (T = Ni, Pd, Pt) [6,7]. CePt 2 Cd 20 shows a magnetic ordering at T 0.26 mag = K [7].…”

Section: Introductionmentioning

confidence: 98%

“…A series of compounds RT 2 X 20 (R: rare earth and actinide metal, T: transition metal, X: Al, Zn), which crystallize in the cubic CeCr 2 Al 20 type structure, has been intensively studied for their novel behaviors such as the extremely heavy-fermion state and field-induced quadrupolar phase in YbCo 2 Zn 20 , and a coexistence of quadrupolar order and superconductivity in PrIr 2 Zn 20 and PrTi 2 Al 20 [1][2][3][4][5]. Recently, Burnett et al and we found a new family of the RT 2 X 20 compounds, namely RT 2 Cd 20 [6,7]. The ground state of RT 2 X 20 strongly depends on X atom.…”

Section: Introductionmentioning

confidence: 98%

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New heavy-fermion antiferromagnet UPd₂Cd₂₀

Hirose¹,

Doto²,

Honda³

et al. 2016

J. Phys.: Condens. Matter

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We succeeded in growing a new high quality single crystal of a ternary uranium compound UPd2Cd20. From the electrical resistivity, magnetization, magnetic susceptibility, and specific heat experiments, UPd2Cd20 is found to be an antiferromagnetic heavy-fermion compound with the Néel temperature [Formula: see text] = 5 K and exhibits the large electronic specific heat coefficient γ exceeding 500 mJ (K(2)· mol)(-1). This compound is the first one that exhibits the magnetic ordering with the magnetic moments of the U atom in a series of UT2X20 (T: transition metal, X = Al, Zn, Cd). UPd2Cd20 shows typical characteristic features in heavy-fermion systems such as a broad maximum in the magnetic susceptibility at [Formula: see text] and a large coefficient A of T (2) term in the resistivity.

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Elastic properties of SmPt2Cd20 probed by ultrasound measurements

Nakanishi

Nakamura

et al. 2018

AIP Advances

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Ultrasound measurements have been carried out to investigate the elastic and low-temperature 4f-electronic properties of the Sm-based 1-2-20 system SmPt2Cd20. It was found that SmPt2Cd20 shows a pronounced elastic softening toward the magnetic transition temperature Tc = 0.64 K in the temperature dependence of the transverse elastic constant CE = (C11 -C12)/2. The clear elastic softening behavior is suppressed gradually with increasing a magnetic field. The obtained results can be explained reasonably by a deformation potential approximation in which a coupling between conduction electrons and elastic strains caused by sound waves leads to a temperature dependence of elastic constants. This suggests possibly that the 4f electrons would become itinerant in the ground state in SmPt2Cd20. The nature of the low-temperature elastic and electronic states involving the ground state multiplets of Sm ions are discussed.

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Single crystal growth and electronic state of new compounds RPt2Cd20 (R = La-Nd, Sm)

Cited by 6 publications

References 23 publications

Substitution Effect for Cd Site in RT₂Cd₂₀ (R = Ce, U)

Substitution Effect for Cd Site in RT₂Cd₂₀ (R = Ce, U)

New heavy-fermion antiferromagnet UPd₂Cd₂₀

Elastic properties of SmPt2Cd20 probed by ultrasound measurements

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Single crystal growth and electronic state of new compounds RPt2Cd20 (R = La-Nd, Sm)

Cited by 6 publications

References 23 publications

Substitution Effect for Cd Site in RT2Cd20 (R = Ce, U)

Substitution Effect for Cd Site in RT2Cd20 (R = Ce, U)

New heavy-fermion antiferromagnet UPd2Cd20

Elastic properties of SmPt2Cd20 probed by ultrasound measurements

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Product

Resources

About

Substitution Effect for Cd Site in RT₂Cd₂₀ (R = Ce, U)

Substitution Effect for Cd Site in RT₂Cd₂₀ (R = Ce, U)

New heavy-fermion antiferromagnet UPd₂Cd₂₀