Physical properties of Ruddlesden-Popper (n = 3) nickelate: La4Ni3O10

Kumar, Susmit; Fjellvåg, Øystein; Sjåstad, Anja Olafsen; Fjellvåg, Helmer

doi:10.1016/j.jmmm.2019.165915

Cited by 24 publications

(33 citation statements)

References 48 publications

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“…1c) was fit to the typical form, C p /T = γ + βT 2 , where γ is the Sommerfeld coefficient and the βT 2 -term arises from phonons. The fit leads to γ = 13.3 mJ mole −1 K −2 and β = 0.37 mJ mole −1 K −4 , which agrees with a previous measurement of C p on polycrystalline samples by Wu et al 23 (γ = 13.5 mJ mole −1 K −2 ) and by Kumar et al 13 (γ = 15.5 mJ mole −1 K −2 ); however, we find a significantly larger Debye temperature (θ D = 450 K) than that reported by either group (θ D = 256 K 23 , 384 K 13 , respectively). For comparison, reported values for single crystal LaNiO 3 are γ = 11.7 mJ mole −1 K −2 and θ D = 465 K 2 .…”

Section: Resultssupporting

confidence: 90%

“…2c, sharp first order superlattice reflections appear between certain fundamentals at 100 K, located at h = 2n + 1 and k = 2 m + 1 ± q c , (m, n integers). The appearance of SLs along k coincides with the observation of a pronounced anomaly in the lattice parameter b at the MMT 11,13 . In this particular crystal, the SL reflections appear only along k, indicating a single domain modulation despite the near metrical equivalence of a and b, which differ by <1%.…”

Section: Resultssupporting

confidence: 78%

“…Here, we report a dramatically different behavior in a higher order (n = 3) R-P nickelate, R 4 Ni 3 O 10 (R = La, Pr, Nd), in which we find intertwined charge-order and spin-order developing at a metal-to-metal transition (MMT) whose precise mechanism has remained an open question for nearly 25 years [11][12][13][14][15][16][17][18] . Combining single crystal synchrotron x-ray and neutron diffraction, we find charge and spin-superlattice (SL) reflections below the MMT with incommensurate propagation vectors q c = (0,q c ,0) and q s = (0,1q s ,0), respectively, with q c = 2q s as expected for a system with coupled charge and spin order.…”

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confidence: 99%

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Intertwined density waves in a metallic nickelate

et al. 2020

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Nickelates are a rich class of materials, ranging from insulating magnets to superconductors. But for stoichiometric materials, insulating behavior is the norm, as for most late transition metal oxides. Notable exceptions are the 3D perovskite LaNiO3, an unconventional paramagnetic metal, and the layered Ruddlesden-Popper phases R4Ni3O10, (R = La, Pr, Nd). The latter are particularly intriguing because they exhibit an unusual metal-to-metal transition. Here, we demonstrate that this transition results from an incommensurate density wave with both charge and magnetic character that lies closer in its behavior to the metallic density wave seen in chromium metal than the insulating stripes typically found in single-layer nickelates like La2-xSrxNiO4. We identify these intertwined density waves as being Fermi surface-driven, revealing a novel ordering mechanism in this nickelate that reflects a coupling among charge, spin, and lattice degrees of freedom that differs not only from the single-layer materials, but from the 3D perovskites as well.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 78%

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confidence: 99%

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Intertwined density waves in a metallic nickelate

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“…2(b). The result is different from that of its sister compound La 4 Ni 3 O 10−δ , the latter of which only shows a tiny (if not none) resistivity upturn 1,21,22,24,25 . In comparison, the low-temperature ρ(T ) curve of Pr 4 Ni 3 O 10.1 exhibits a clearer upturn 35 .…”

Section: B Electrical Resistivitycontrasting

confidence: 66%

“…A similar MMT at 140 K was also observed for the as-prepared La 4 Ni 3 O 10.02 and reduced La 4 Ni 3 O 9.78 , while the oxidized La 4 Ni 3 O 10.12 did not show evidence of an MMT. Recently, the MMT in La 4 Ni 3 O 10 was found to be accompanied with a structural response, featured with the expansion in the b axis, but without any change in the space group 23,24 . Note that the temperature dependence of magnetic susceptibility only shows a gradual decrease at the MMT 22,24,25 , apparently contradicting with the obvious jumps in the temperature dependence of resistivity and specific heat 23,24 .…”

Section: Introductionmentioning

confidence: 99%

Metal-to-metal transition and heavy-electron state in Nd$_4$Ni$_3$O$_{10-δ}$

Li,

Wang,

Yang

et al. 2020

Preprint

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The trilayer nickelate Nd4Ni3O 10−δ (δ ≈ 0.15) was investigated by the measurements of x-ray diffraction, electrical resistivity, magnetic susceptibility, and heat capacity. The crystal structure data suggest a higher Ni valence in the inner perovskite-like layer. At ambient pressure the resistivity shows a jump at 162 K, indicating a metal-to-metal transition (MMT). The MMT is also characterized by a magnetic susceptibility drop, a sharp specific-heat peak, and an isotropic lattice contraction. Below ∼ 50 K, a resistivity upturn with a logT dependence shows up, accompanying with a negative thermal expansion. External hydrostatic pressure suppresses the resistivity jump progressively, coincident with the diminution of the logT behavior. The low-temperature electronic specific-heat coefficient is extracted to be ∼ 150 mJ K −2 mol-fu −1 , equivalent to ∼ 50 mJ K −2 mol-Ni −1 , indicating an unusual heavy-electron correlated state. The novel heavy-electron state as well as the logarithmic temperature dependence of resistivity is explained in terms of the Ni 3+ centered Kondo effect in the inner layer of the (NdNiO3)3 trilayers.

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New simple La‐Ni complexes as efficient precursors for functional LaNiO₃‐based ceramics

Гавриков

Belova

Yapryntsev

et al. 2021

Applied Organom Chemis

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Perovskite LaNiO 3 is of immense significance in a range of fields such as heterogeneous catalysis. Herein, new convenient approach for preparing LaNiO 3 via thermolysis of new simple complexes, [Ni (bpyis 1,10-phenanthroline), is reported. These first examples of unambiguously characterized LaNiO 3 precursors are chemically stable and can be synthesized rapidly in good yields. While virtually monophasic LaNiO 3 can be prepared from 2 via only 3-h annealing on air at 800 C, there are always minor admixtures in oxide samples prepared from 1. Peculiarities of intrinsic thermal transformations of 1 and 2 affecting such difference have been revealed. Thus,

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Physical properties of Ruddlesden-Popper (n = 3) nickelate: La4Ni3O10

Cited by 24 publications

References 48 publications

Intertwined density waves in a metallic nickelate

Intertwined density waves in a metallic nickelate

Metal-to-metal transition and heavy-electron state in Nd$_4$Ni$_3$O$_{10-δ}$

New simple La‐Ni complexes as efficient precursors for functional LaNiO₃‐based ceramics

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Physical properties of Ruddlesden-Popper (n = 3) nickelate: La4Ni3O10

Cited by 24 publications

References 48 publications

Intertwined density waves in a metallic nickelate

Intertwined density waves in a metallic nickelate

Metal-to-metal transition and heavy-electron state in Nd$_4$Ni$_3$O$_{10-δ}$

New simple La‐Ni complexes as efficient precursors for functional LaNiO3‐based ceramics

Contact Info

Product

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Physical properties of Ruddlesden-Popper (n = 3) nickelate: La4Ni3O10

New simple La‐Ni complexes as efficient precursors for functional LaNiO₃‐based ceramics