2011
DOI: 10.1143/jpsjs.80sa.sa080
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Magnetic Properties of Two-Dimensional Honeycomb Lattice MagnetRNi3Al9(R= Gd to Lu)

Abstract: 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 … Show more

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Cited by 23 publications
(10 citation statements)
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“…For R = Er, a broad hump can be observed between 10 and 25 K. A similar behavior has been reported in Ref. [8] for ErNi 3 Al 9 and was ascribed to CEF effects. For DyNi 3 Ga 9 and HoNi 3 Ga 9 , the data do not drop to smaller values of C mag /T at low temperature; instead, there is a tendency to increase in agreement with the behavior observed in their χ (T ) data of Figs.…”
Section: Resultssupporting
confidence: 88%
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“…For R = Er, a broad hump can be observed between 10 and 25 K. A similar behavior has been reported in Ref. [8] for ErNi 3 Al 9 and was ascribed to CEF effects. For DyNi 3 Ga 9 and HoNi 3 Ga 9 , the data do not drop to smaller values of C mag /T at low temperature; instead, there is a tendency to increase in agreement with the behavior observed in their χ (T ) data of Figs.…”
Section: Resultssupporting
confidence: 88%
“…As it has been shown, the magnetic structure of the series of intermetallics compounds Tb m Rh n In 3m+2n (m = 1, 2; n = 0, 1) [17], CeCd 0.7 Sb 2 [18], RRh 4 B 4 [19], RRhIn 5 [20], and RNi 3 Al 9 (R = Gd to Lu) [8] is related to the evolution of the sign of the CEF parameter B 2 0 . In order to check for the above results, we present below the spin model used to simulate the magnetic properties of the system under study.…”
Section: Resultsmentioning
confidence: 91%
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“…DyNi 3 Al 9 is a chiral rare-earth compound isostructural to YbNi 3 Al 9 with the space group R32 [9]. It orders at T N = 8.5 K and has a possibility of having a helimagnetic structure where the magnetic moments are ordered in the hexagonal c-plane [10]. From the magnetization curve of DyNi 3 Al 9 , the Dy moments are considered to be ordered in an almost antiferromagnetic structure.…”
Section: Introductionmentioning
confidence: 99%
“…This is an idealization of real systems where Heisenberg-like and next-nearest-neighbor J 2 coupling lead to an even richer assortment of phases, including other spin-liquids. However, the best-known model honeycomb compound Na 2 IrO 3 shows long-range magnetic ordering at 13.3 K and other higher spin systems such as Bi 3 Mn 4 O 12 (NO 3 ), Na 2 Co 2 TeO 6 , Na 3 Co 2 SbO 6 , RNi 3 Al 9 , Cu 3 Ni 2 SbO 6 , Cu 2 Co 2 SbO 6 , and Ba 3 Co 2 O 6 (CO 3 ) 0.2 – all order magnetically323334353637. The quest for S = 1/2 honeycomb systems that exhibit strong magnetic frustration therefore continues to excite the physics community, and at the same time challenge the chemistry community.…”
mentioning
confidence: 99%