RE6Pd13Zn4 (RE = La‐Nd, Sm, Gd, Tb) – New Palladium‐rich Phases with Pd@RE6 Octahedra in bcc Packing

Gerke, Birgit; Janka, Oliver; Pöttgen, Rainer

doi:10.1002/zaac.201400334

Cited by 9 publications

(12 citation statements)

References 20 publications

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“…To evaluate the impurity effects, we grew the other sample of Ce 6 Pd 13 Zn 4 in the same way we grew La 6 Pd 13 Zn 4 ; i.e., Ce 4.5 Pd 13was used as an intermediate alloy. No impurity peaks were observed in the X-ray diffraction pattern of this sample, and the lattice constant (a = 9.618(2) Å) agrees with that of the non-stoichiometric compound Ce 6 Pd 13-x Zn 4+x 7). The M/H of this purer sample also shows an increase in M/H below T N as shown by the red down-pointing triangles inFig.…”

supporting

confidence: 69%

“…reported recently by Gerke et al 7) Figure 1 shows the chemical unit cell of Ce 6 Pd 13 Zn 4 . This cell can be considered as the body-centered-cubic arrangement of the Pd1-centered Ce 6 octahedra surrounded by a [Pd 12 Zn 4 ] network.…”

mentioning

confidence: 88%

“…This cell can be considered as the body-centered-cubic arrangement of the Pd1-centered Ce 6 octahedra surrounded by a [Pd 12 Zn 4 ] network. 7) The site symmetry of the Ce ions (12e Wyckoff site) is not cubic but tetragonal in this structure. The first and the second nearest Ce ions are connected by the red and blue lines, respectively.…”

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confidence: 88%

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Possible Frustration Effects on a New Antiferromagnetic Compound Ce₆Pd₁₃Zn₄ with the Octahedral Ce Sublattice

et al. 2018

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Magnetization, specific heat, and electrical resistivity measurements have been performed on polycrystalline samples of a new cubic compound, Ce 6 Pd 13 Zn 4. This compound exhibits metallic behavior and is classified as a Kondo-lattice system. The trivalent Ce ions are responsible for the antiferromagnetic transition at T N = 3.3 K and the phase transition at T N ' = 1.3 K with the formation of superzone gaps. The increase in magnetic susceptibilities below T N and the considerably large value of the specific heat divided by temperature (1.25 J•Ce-mol-1 •K-2) imply the existence of non-ordered Ce magnetic moments due to the geometrical frustration on the octahedral Ce sublattice. Geometrical frustration hinders a simple collinear antiferromagnetic (AFM) order and causes a variety of attractive magnetic phenomena. For insulators, the spin-ice state of the pyrochlore compounds 1) and the quantum spin-liquid state of compounds with triangular and Kagomé lattices 2) are the distinctive examples of such phenomena. The metallic rare-earth and actinide compounds are marked compounds from the standpoint of frustration: if the rare-earth or actinide ions are located on the geometrically frustrated sites, the effects of frustration as well as the strong correlation effects between f and the conduction electrons offer novel magnetic and transport properties. The peculiar AFM structures in CePdAl 3) and UNi 4 B 4) that are characterized by the existence of non-ordered magnetic moments, the extremely small release of magnetic entropy at the magnetic transition temperature in YbAgGe 5) , and the quantum critical behavior in Ce 2 Pt 2 Pb 6) are examples of frustration-driven phenomena for metallic f-electron compounds. To explore novel phenomena related to the strong correlation and frustration effects, it is important to search for new compounds and study their physical properties. In the present letter, we report on the magnetic and transport properties of a new cubic compound, Ce 6 Pd 13 Zn 4. The existence of this compound was

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confidence: 69%

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confidence: 88%

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Possible Frustration Effects on a New Antiferromagnetic Compound Ce₆Pd₁₃Zn₄ with the Octahedral Ce Sublattice

et al. 2018

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“…EuAuZn (T C = 51.1 K) [7], or YbPtZn [2] which exhibits an onset of a heavy fermion state and orders magnetically at 1.35 K. Isolated zinc atoms also occur in the Heusler phases REPd 2 Zn (RE = Tm-Lu) [10] and the recently reported series of RE 6 Pd 13 Zn 4 (RE = La-Nd, Sm, Gd, Tb) compounds [11] of which the gadolinium phase orders antiferromagnetically at T N = 10.5(1) K.…”

Section: Introductionmentioning

confidence: 99%

Zn4 tetrahedra as basic building units in intermediate-valent Ce23Ru7Zn4

Niehaus

Bartsch

Pöttgen

2015

Solid State Sciences

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“…Ce 6 Pd 13 Zn 4 was reported as a cubic Kondo-lattice compound and was focused on from a view point of a geometrical frustration [1]. The crystal structure of this compound is characterized by an octahedral sublattice formed by Ce atoms [2]. Because of such crystal structure, this compound shows an antiferromagnetic order affected by geometrical frustration [1].…”

Section: Introductionmentioning

confidence: 99%

Magnetic, Transport, and Thermal Properties of New Cubic Compounds Ce₆Mg₂₃Z (Z = C, Si, Ge)

Shibuya

Matsuoka

Sugawara

et al. 2020

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

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We have focused on new cubic compounds Ce 6 Mg 23 Z (Z = C, Si, Ge) in which Ce atoms are reported to form an octahedral sublattice. In this study, we have grown polycrystalline samples of Ce 6 Mg 23 Z and studied their magnetic and transport properties. We found that the Ce ions in these compounds are trivalent and antiferromagnetic transition occurs at 1.6 and 1.2 K for Ce 6 Mg 23 Ge and Ce 6 Mg 23 Si, respectively. The large values of the paramagnetic Curie temperature divided by the antiferromagnetic transition temperature (4.5 for Ce 6 Mg 23 Ge and 9.9 for Ce 6 Mg 23 Si) imply suppression of transition temperature due to geometrical frustration on the octahedral Ce sublattice.

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RE₆Pd₁₃Zn₄ (RE = La‐Nd, Sm, Gd, Tb) – New Palladium‐rich Phases with Pd@RE₆ Octahedra in bcc Packing

Cited by 9 publications

References 20 publications

Possible Frustration Effects on a New Antiferromagnetic Compound Ce₆Pd₁₃Zn₄ with the Octahedral Ce Sublattice

Possible Frustration Effects on a New Antiferromagnetic Compound Ce₆Pd₁₃Zn₄ with the Octahedral Ce Sublattice

Zn4 tetrahedra as basic building units in intermediate-valent Ce23Ru7Zn4

Magnetic, Transport, and Thermal Properties of New Cubic Compounds Ce₆Mg₂₃Z (Z = C, Si, Ge)

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RE6Pd13Zn4 (RE = La‐Nd, Sm, Gd, Tb) – New Palladium‐rich Phases with Pd@RE6 Octahedra in bcc Packing

Cited by 9 publications

References 20 publications

Possible Frustration Effects on a New Antiferromagnetic Compound Ce6Pd13Zn4 with the Octahedral Ce Sublattice

Possible Frustration Effects on a New Antiferromagnetic Compound Ce6Pd13Zn4 with the Octahedral Ce Sublattice

Zn4 tetrahedra as basic building units in intermediate-valent Ce23Ru7Zn4

Magnetic, Transport, and Thermal Properties of New Cubic Compounds Ce6Mg23Z (Z = C, Si, Ge)

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RE₆Pd₁₃Zn₄ (RE = La‐Nd, Sm, Gd, Tb) – New Palladium‐rich Phases with Pd@RE₆ Octahedra in bcc Packing

Possible Frustration Effects on a New Antiferromagnetic Compound Ce₆Pd₁₃Zn₄ with the Octahedral Ce Sublattice

Possible Frustration Effects on a New Antiferromagnetic Compound Ce₆Pd₁₃Zn₄ with the Octahedral Ce Sublattice

Magnetic, Transport, and Thermal Properties of New Cubic Compounds Ce₆Mg₂₃Z (Z = C, Si, Ge)