The ternary system uranium-manganese-phosphorus: U2Mn12P7 with Zr2Fe12P7-type structure and isotypic phosphides A2Mn12P7 (A  Sc, Sm, Gd-Lu, Th) and U2T12P7 (T  Fe, Co, Ni)

Jeitschko, Wolfgang; Pollmeier, Peter G.; Meisen, U.

doi:10.1016/0925-8388(93)90578-b

Cited by 32 publications

(19 citation statements)

References 27 publications

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“…In Figure 1, the unit-cell volume of Ln 2 Ni 12 P 7 is plotted vs. lanthanide ion Ln where open circles are taken from Ref. [16]. Starting with La, one observes the typical reduction of the volume due to the contraction of the ionic radii of the lanthanides with increasing atomic number.…”

Section: Crystal Structurementioning

confidence: 99%

“…[14,15,16,17] Most of these studies have involved efforts to synthesize the materials and study their crystal structure, so that their physical properties are still mostly unreported. Recently, some interesting correlated electron behavior has been reported for several compounds with this structure, such as heavy-fermion behaviour and ferromagnetism in Sm 2 Fe 12 P 7 , [18] and local-moment antiferromagnetism in U 2 Fe 12 P 7 .…”

Section: Introductionmentioning

confidence: 99%

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Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Jang¹,

Bd²,

Ho³

et al. 2014

J. Phys.: Condens. Matter

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Abstract.A crossover from a non-Fermi liquid to a Fermi liquid phase in Yb 2 Ni 12 P 7 is observed by analyzing electrical resistivity ρ(T ), magnetic susceptibility χ(T ), specific heat C(T ), and thermoelectric power S(T ) measurements. The electronic contribution to specific heat, C e (T ), behaves as C e (T )/T ∼ − ln(T ) for 5 K < T < 15 K, which is consistent with non-Fermi liquid behavior. Below T ∼ 4 K, the upturn in C e (T )/T begins to saturate, suggesting that the system crosses over into a Fermi-liquid ground state. This is consistent with robust ρ(T )−ρ 0 = AT 2 behavior below T ∼ 4 K, with the power-law exponent becoming sub-quadratic for T > 4 K. A crossover between Fermiliquid and non-Fermi liquid behavior suggests that Yb 2 Ni 12 P 7 is in close proximity to a quantum critical point, in agreement with results from recent measurements of this compound under applied pressure.

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Section: Crystal Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Jang¹,

Bd²,

Ho³

et al. 2014

J. Phys.: Condens. Matter

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“…The experiments were performed on single crystals of M 2 Fe 12 P 7 compounds that were harvested as byproducts in our efforts to synthesize MFePO and MFe 2 P 2 (M = rare earth, actinide) compounds by growth in a molten Sn flux [15]. The M 2 Fe 12 P 7 compounds belong to a large class of compounds with the chemical formula M 2 T 12 Pn 7 , which have the hexagonal, noncentrosymmetric, Zr 2 Fe 12 P 7 -type crystal structure (space group P-6) [16] and can be formed with many metal M, transition metal T, and pnictogen Pn elements (M = Li, Na, Ca, Mg, Ti-Hf, Nb, Sc, Y, La-Lu; T = Mn, Fe, Co, Ni, Ru; Pn = P, As) [17][18][19]. The M 2 T 12 Pn 7 compounds comprise a subclass of a larger class of pnictogen-based compounds with noncentrosymmetric structures and the chemical formula M n(n-1) T (n+1)(n+2) Pn n(n+1)+1 [17][18]20].…”

Section: C(t)/t ~ -Ln(t) (2)mentioning

confidence: 99%

Superconductivity, spin and charge order, and quantum criticality in correlated electron materials

Maple

Hamlin

Zocco

et al. 2012

EPJ Web of Conferences

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Abstract. We describe recent experiments performed in our laboratory that address spin or charge ordered phases in novel rare earth and actinide based materials and phenomena that emerge when these ordered phases are suppressed toward 0 K by varying an external control parameter such as chemical composition, pressure, or magnetic field. Specific examples discussed include magnetic order, heavy fermion behavior, and unconventional quantum criticality in noncentrosymmetric M 2 T 12 P 7 compounds (M = rare earth, actinide; T = Co, Fe) and the interplay of superconductivity and charge density waves in rare earth tritelluride compounds RTe 3 (R = Gd, Tb, Dy).

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“…1. The crystal structure of Ln 2 M 12 Pn 7 can be seen as a filled Cr 12 P 7 structure 1,2) , reminding us of the case of the filled Skutterudite. Actually, all the lanthanoid elements except La, Y, Sc and tetravalent ions of Zr and Ti are reported to occupy the Ln site [3][4][5] , indicating that the Ln site is in a robust cage of phosphorous atoms as the case of the Skutterudite.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Behavior of Localized Magnetic Moments in Itinerant Ferromagnets Ln2Co12P7 (Ln = Y, Pr, Nd, Sm, Gd and Dy)

Ohta

Watanabe

Miyake

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

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We synthesized polycrystalline samples of ternary compounds Ln 2 Co 12 P 7 (Ln = Y, Pr, Nd, Sm, Gd and Dy) with the Curie temperature being about 150 K and measured magnetization to clarify magnetism of Co sublattice and also to clarify behavior of magnetic moments of Ln 3+ in ferromagnetic phase. As a result, magnetism of Y 2 Co 12 P 7 was found to be a possible weakly itinerant electronic ferromagnetism and found to be similar to that of

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The ternary system uranium-manganese-phosphorus: U2Mn12P7 with Zr2Fe12P7-type structure and isotypic phosphides A2Mn12P7 (A  Sc, Sm, Gd-Lu, Th) and U2T12P7 (T  Fe, Co, Ni)

Cited by 32 publications

References 27 publications

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Superconductivity, spin and charge order, and quantum criticality in correlated electron materials

Anomalous Behavior of Localized Magnetic Moments in Itinerant Ferromagnets <i>Ln</i><sub>2</sub>Co<sub>12</sub>P<sub>7</sub> (<i>Ln</i> = Y, Pr, Nd, Sm, Gd and Dy)

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The ternary system uranium-manganese-phosphorus: U2Mn12P7 with Zr2Fe12P7-type structure and isotypic phosphides A2Mn12P7 (A  Sc, Sm, Gd-Lu, Th) and U2T12P7 (T  Fe, Co, Ni)

Cited by 32 publications

References 27 publications

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb2Ni12P7

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb2Ni12P7

Superconductivity, spin and charge order, and quantum criticality in correlated electron materials

Anomalous Behavior of Localized Magnetic Moments in Itinerant Ferromagnets <i>Ln</i><sub>2</sub>Co<sub>12</sub>P<sub>7</sub> (<i>Ln</i> = Y, Pr, Nd, Sm, Gd and Dy)

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Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇