Planare CuO4-Polygone und eine einseitig offene Te4+O3-Koordination in SrCuTe2O6 / Planar CuO4 Polygons and a One-Sided Open Te4+O3 Coordination in SrCuTe2O6

Wulff, L.; Müller‐Buschbaum, Hk.

doi:10.1515/znb-1997-1111

Cited by 18 publications

(8 citation statements)

References 12 publications

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“…The bond geometries of the Sr, Te, and V atoms confirm, to within 0.1, the expected valencies of +2, +4, and +5, respectively (Brown & Altermatt, 1985;Brown, 2009). Each metal atom has approximately half of its bonds to oxygen shorter than the other half, as commonly observed in A-B-Te-O phases (Sedello & Mueller-Buschbaum, 1996;Wedel & Mueller-Buschbaum, 1996;Wulff & Mueller-Buschbaum, 1997;Hou et al, 2005;Zhang et al, 2008Zhang et al, , 2010Zhang et al, , 2011. Namely, the Sr-O bond distances are around 2.5 or 2.8 Å , the Te-O bonds are around 1.85 or 2.15 Å , and the V-O bonds are around 1.65 or 1.75 Å (Table 2).…”

Section: Resultssupporting

confidence: 68%

“…Similar low-dimensional features to those observed in Sr 7 V 4 Te 12 O 41 are found in only a few tellurite, i.e. Te IV , compounds of the type A-B-Te-O phases (A = Ba or Sr, and B = Cu, V, Nb, or Mo) (Sedello & Mueller-Buschbaum, 1996;Wedel & Mueller-Buschbaum, 1996;Wulff & Mueller-Buschbaum, 1997;Hou et al, 2005;Zhang et al, 2008Zhang et al, , 2010Zhang et al, , 2011. In contrast, these low-dimensional features are not observed in tellurates, i.e.…”

Section: Resultssupporting

confidence: 60%

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A new one-dimensional strontium vanadium tellurite, Sr₇V₄Te₁₂O₄₁

2016

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Vanadium tellurites display a rich structural chemistry with interesting physical properties, such as second harmonic generation (SHG). Tellurites, i.e. Te(4+)Ox, are often observed in unusual structures and form various structural motifs, including isolated clusters, chains, layers, and three-dimensional networks. Similarly, vanadates, i.e. V(5+)Ox, show rich structural features, such as VO4 tetrahedra, VO5 square pyramids or trigonal bipyramids, and VO6 octahedra. Strontium vanadium tellurite, Sr7V4Te12O41, was obtained from the melt of the solid-state reaction of SrTeO4 and VO2 in a sealed quartz tube as it cooled from 973 K. The crystal structure exhibits a one-dimensional latticework along the a axis comprised of paired Sr3Te3Ox units, namely Sr6Te6O2x+1, with corner-shared TeO4 polyhedra - and specifically the Te lone-pair electrons - facing outward in the bc plane. The Sr6Te6O2x+1 latticework is helical and is layered in the b-axis direction against sheets of corner-shared VO4 tetrahedra, and is linked in the c-axis direction via individual corner-shared SrO8 square prisms.

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Section: Resultssupporting

confidence: 68%

Section: Resultssupporting

confidence: 60%

A new one-dimensional strontium vanadium tellurite, Sr₇V₄Te₁₂O₄₁

2016

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“…SrCuTe 2 O 6 has a lattice constant of a = 12.4373 Å [15]. The static susceptibility of single-crystal and polycrystalline SrCuTe 2 O 6 yields a negative Curie-Weiss temperature of θ CW = −27 ± 1 K [16], revealing predominantly antiferromagnetic exchange interactions [13,16,17], and shows a broad maximum at 32 K. This feature has been attributed to a 1D spin- 1 2 Heisenberg antiferromagnetic chain revealing J 3 = 49 K [13,16,17] as the dominant interaction.…”

Section: Introductionmentioning

confidence: 99%

Weak three-dimensional coupling of Heisenberg quantum spin chains in SrCuTe2O6

et al. 2021

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The magnetic Hamiltonian of the Heisenberg quantum antiferromagnet SrCuTe 2 O 6 is studied by inelastic neutron scattering technique on powder and single-crystalline samples above and below the magnetic transition temperatures at 8 and 2 K. The high-temperature spectra reveal a characteristic diffuse scattering corresponding to a multispinon continuum, confirming the dominant quantum spin chain behavior due to the third neighbor interaction J intra = 4.22 meV (49 K). The low-temperature spectra exhibit sharper excitations at energies <1.25 meV, which can be explained by considering a combination of weak antiferromagnetic first nearest neighbor interchain coupling J 1 = 0.17 meV (1.9 K) and even weaker ferromagnetic second nearest neighbor J 2 = −0.037 meV (−0.4 K) or a weak ferromagnetic J 2 = −0.11 meV (−1.3 K) and antiferromagnetic J 6 = 0.16 meV (1.85 K), giving rise to the long-range magnetic order and spin-wave excitations at low energies. These results suggest that SrCuTe 2 O 6 is a highly one-dimensional Heisenberg system with three mutually perpendicular spin chains coupled by a weak ferromagnetic J 2 in addition to the antiferromagnetic J 1 or J 6 , presenting a contrasting scenario from the highly frustrated hyper-hyperkagome lattice (equally strong antiferromagnetic J 1 and J 2 ) found in the isostructural quantum spin liquid candidate PbCuTe 2 O 6 .

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“…SrCuTe 2 O 6 is a promising quantum magnet, isostructural to PbCuTe 2 O 6 , that can give insights into the hyperhyperkagome frustration mechanism responsible for the QSL ground state. SrCuTe 2 O 6 crystallizes in cubic symmetry at room temperature (space group P4 1 32 [15]) with the magnetic spin- 1 2 Cu 2+ ions occupying a single Wyckoff site. The Cu 2+ ions are coupled together by exchange interactions J 1 , J 2 , and J 3 .…”

Section: Introductionmentioning

confidence: 99%

Magnetic structure of the quantum magnet SrCuTe2O6

et al. 2020

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SrCuTe 2 O 6 consists of a three-dimensional arrangement of spin-1 2 Cu 2+ ions. The first-, second-, and third-neighbor interactions, respectively, couple Cu 2+ moments into a network of isolated triangles, a highly frustrated hyperkagome lattice consisting of corner-sharing triangles and antiferromagnetic chains. Of these, the chain interaction dominates in SrCuTe 2 O 6 while the other two interactions lead to frustrated interchain coupling giving rise to long-range magnetic order at suppressed temperatures. In this paper, we investigate the magnetic properties in SrCuTe 2 O 6 using muon relaxation spectroscopy and neutron diffraction and present the low-temperature magnetic structure as well as the directional-dependent magnetic phase diagram as a function of field.

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Planare CuO₄-Polygone und eine einseitig offene Te⁴⁺O₃-Koordination in SrCuTe₂O₆ / Planar CuO₄ Polygons and a One-Sided Open Te⁴⁺O₃ Coordination in SrCuTe₂O₆

Cited by 18 publications

References 12 publications

A new one-dimensional strontium vanadium tellurite, Sr₇V₄Te₁₂O₄₁

A new one-dimensional strontium vanadium tellurite, Sr₇V₄Te₁₂O₄₁

Weak three-dimensional coupling of Heisenberg quantum spin chains in SrCuTe2O6

Magnetic structure of the quantum magnet SrCuTe2O6

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Planare CuO4-Polygone und eine einseitig offene Te4+O3-Koordination in SrCuTe2O6 / Planar CuO4 Polygons and a One-Sided Open Te4+O3 Coordination in SrCuTe2O6

Cited by 18 publications

References 12 publications

A new one-dimensional strontium vanadium tellurite, Sr7V4Te12O41

A new one-dimensional strontium vanadium tellurite, Sr7V4Te12O41

Weak three-dimensional coupling of Heisenberg quantum spin chains in SrCuTe2O6

Magnetic structure of the quantum magnet SrCuTe2O6

Contact Info

Product

Resources

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Planare CuO₄-Polygone und eine einseitig offene Te⁴⁺O₃-Koordination in SrCuTe₂O₆ / Planar CuO₄ Polygons and a One-Sided Open Te⁴⁺O₃ Coordination in SrCuTe₂O₆

A new one-dimensional strontium vanadium tellurite, Sr₇V₄Te₁₂O₄₁

A new one-dimensional strontium vanadium tellurite, Sr₇V₄Te₁₂O₄₁