Structure of RNi3Al9 (R = Y, Gd, Dy, Er) with either ordered or partly disordered arrangement of Al-atom triangles and rare-earth-metal atoms

Gladyshevskii, R.; Cenzual, K.; Flack, H. D.; Parthé, E.

doi:10.1107/s010876819201173x

Cited by 94 publications

(59 citation statements)

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“…The compounds in the RNi 3 Al 9 series crystallize in the trigonal ErNi 3 Al 9 -or DyNi 3 Al 9 -type structure with the space group R32 [1,2]. The ErNi 3 Al 9 -type structure is made of triangular meshes of Al 3 -and Ni 3 -layers and a R 2 Al 3 -layer.…”

Section: Resultsmentioning

confidence: 99%

“…In the R 2 Al 3 -layer, rare earth atoms occupy two-dimensional honeycomb lattice sites at the center of the Al 3 triangles. The R 2 Al 3 -layer in the DyNi 3 Al 9 structure shows a partially disordered arrangement because some distances between the rare earth atoms and the Al 3 triangles are too short to allow complete occupancy of these sites [1,2].…”

Section: Resultsmentioning

confidence: 99%

“…Gladyshevskii et al have reported on the crystallographic data of RNi 3 Al 9 [1,2]. As RNi 3 Al 9 contains rare earth atoms arranged in a twodimensional honeycomb lattice, it is expected to exhibit unusual magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi₃Al₉(R= Gd to Lu)

2011

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We report the first observation of the magnetic properties of a ternary aluminide RNi 3 Al 9 (R = Gd to Lu). A single crystal of RNi 3 Al 9 was grown using the Al-flux method. We have identified the crystal structures of RNi 3 Al 9 as trigonal DyNi 3 Al 9 -and ErNi 3 Al 9 -type structures for R = Gd to Ho and R = Er to Lu, respectively. The magnetic properties of RNi 3 Al 9 have been investigated through specific heat, electrical resistivity and magnetization measurements. RNi 3 Al 9 shows a magnetic order at ordering temperatures of T M = 23.0, 18.5, 8.4, 3.5, 6.4, 2.9, and 3.4 K for R = Gd, Tb, Dy, Ho, Er, Tm, and Yb, respectively. The ordering temperature T M roughly follows de Genne scaling. For R = Tb to Ho and Yb, the axis of easy magnetization is perpendicular to the c-axis, while for R = Er and Tm, it is parallel to the c-axis. LuNi 3 Al 9 shows diamagnetism. Metamagnetic transition is observed around a critical field of H c = 10, 5, and 1 kOe for R = Er, Tm, and Yb, respectively. In these compounds, the specific heat and magnetic susceptibility exhibit a characteristic feature, which might be attributed to the crystalline electric field (CEF) effects.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi₃Al₉(R= Gd to Lu)

2011

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“…The Kondo lattice compounds, YbNi 3 Al 9 and YbNi 3 Ga 9 , both possess a trigonal ErNi 3 Al 9 -type (R32) structure [3,4]. YbNi 3 Al 9 is a heavy-fermion antiferromagnet with the Néel temperature of T N =3.4 K, while YbNi 3 Ga 9 is a valence fluctuating compound with non-magnetic state, as evidenced by the magnetic susceptibility measurements [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Photoemission Studies of Kondo Lattice Compounds YbNi₃(Ga₁₋_xAl_x)₉

Utsumi

Sato

Nagata

et al. 2014

Proceedings of the 12th Asia Pacific Physics Conference (APPC12)

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We have investigated the electronic structure of YbNi 3 (Ga 1−x Al x ) 9 (x=0, 0.05, 0.10, 0.15) by means of hard x-ray (hν ∼ 6 keV) and low energy (hν ∼ 7 eV) photoemission spectroscopies (HAXPES and LEPES). Both Yb 2+ and Yb 3+ components are observed in the Yb 3d HAXPES spectra, which is an evidence of the valence fluctuation in YbNi 3 (Ga 1−x Al x ) 9 . A substitution of an Al ion for a Ga ion in YbNi 3 Ga 9 changes the Yb ion into a trivalent state. The LEPES spectra of YbNi 3 Ga 9 clearly exhibit the Kondo peak near the Fermi level (E F ) and the Kondo temperature is estimated to be T K ∼ 550 K. With the Al substitution, the Kondo peak is shifted toward E F , indicating the decrease of T K

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“…Different stacking of these slabs (sometimes in combination with additional kinds of layers) results in very similar compositions and quite a variety of symmetries: Yb 2 Pd 3 Ga 9 (space group P6 1 22, Pearson symbol hP84) [2], RENi 3 Al 9 (RE = Y, Gd, Dy, Er; space group R32, Pearson symbol hR78) [3], RE 4 T 9 Al 24 (RE = Y, Gd-Lu; T = Pd, Pt; space group P1, Pearson symbol aP37) [4], RE 2−x Pt 4 M 8+3x (RE = Y, La-Sm, Gd, Er, Yb; space group P6 3 /mmc, Pearson symbol hP20 -4.3) [5 -7]. Representatives of the Y 2 Co 3 Ga 9 structure type (space group Cmcm, Pearson symbol oC56) are reported mainly for ternary rare-earth aluminides (gallides) containing Co, Rh, Ir, Ru and Pd as transition element: RE 2 Co 3 Ga 9 (RE = Y, Gd-Lu) [1, 8 -10], RE 2 Co 3 Al 9 0932-0776 / 06 / 0700-0904 $ 06.00 c 2006 Verlag der Zeitschrift für Naturforschung, Tübingen · http://znaturforsch.com (RE = Y, Yb, Lu) [9 -11], RE 2 Rh 3 Ga 9 (RE = Y, Ce, Sm, Gd-Yb) [12 -16], RE 2 Rh 3 Al 9 (RE = Y, La-Sm, Gd-Lu) [13, 14, 16 -18], RE 2 Ir 3 Ga 9 (RE = Y, Ce, Sm, Gd-Yb) [12 -16], RE 2 Ir 3 Al 9 (RE = Y, La-Sm, Gd-Lu) [13, 14, 17 -19], RE 2 Ru 3 Ga 9 (RE = Y, La-Sm, Gd-Tm) [20 -22] and RE 2 Pd 3 Al 9 (RE = Y, Gd-Tm) [17].…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure and Physical Properties of New Ternary Gallides Eu₂Rh₃Ga₉ and Eu₂Ir₃Ga₉

Sichevych

Schnelle

Prots

et al. 2006

Zeitschrift Für Naturforschung B

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The compounds Eu 2 Rh 3 Ga 9 and Eu 2 Ir 3 Ga 9 were synthesized by melting the elements in sealed tantalum tubes with subsequent annealing at 600 • C. Both gallides are isotypic with Y 2 Co 3 Ga 9 (space group Cmcm, Pearson symbol oC56, Z = 4) as evidenced by single crystal structure analysis: a = 12.9902(6), b = 7.6141(4), c = 9.7433(5)Å, R F = 0.025, 617 structure factors, 42 variable parameters for Eu 2 Rh 3 Ga 9 , and a = 13.0371 (7), b = 7.6017(4), c = 9.6972(6)Å, R F = 0.032, 645 reflections, 42 variables for Eu 2 Ir 3 Ga 9 . Magnetic susceptibility measurements as well as X-ray absorption spectra indicate the 4 f 7 electronic configuration of europium (Eu 2+ ) with significant admixture of the 4 f 6 state in both compounds.

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Structure of RNi₃Al₉ (R = Y, Gd, Dy, Er) with either ordered or partly disordered arrangement of Al-atom triangles and rare-earth-metal atoms

Cited by 94 publications

References 2 publications

Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi₃Al₉(R= Gd to Lu)

Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi₃Al₉(R= Gd to Lu)

Photoemission Studies of Kondo Lattice Compounds YbNi₃(Ga₁₋_xAl_x)₉

Crystal Structure and Physical Properties of New Ternary Gallides Eu₂Rh₃Ga₉ and Eu₂Ir₃Ga₉

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Structure of RNi3Al9 (R = Y, Gd, Dy, Er) with either ordered or partly disordered arrangement of Al-atom triangles and rare-earth-metal atoms

Cited by 94 publications

References 2 publications

Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi3Al9(R= Gd to Lu)

Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi3Al9(R= Gd to Lu)

Photoemission Studies of Kondo Lattice Compounds YbNi3(Ga1−xAlx)9

Crystal Structure and Physical Properties of New Ternary Gallides Eu2Rh3Ga9 and Eu2Ir3Ga9

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Structure of RNi₃Al₉ (R = Y, Gd, Dy, Er) with either ordered or partly disordered arrangement of Al-atom triangles and rare-earth-metal atoms

Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi₃Al₉(R= Gd to Lu)

Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi₃Al₉(R= Gd to Lu)

Photoemission Studies of Kondo Lattice Compounds YbNi₃(Ga₁₋_xAl_x)₉

Crystal Structure and Physical Properties of New Ternary Gallides Eu₂Rh₃Ga₉ and Eu₂Ir₃Ga₉