ChemInform Abstract: Kagome Layers Connected by Isolated Trigonal SrO<sub>6</sub> Prisms in the Strontium Manganate(IV) Tellurate(VI): SrMnTeO<sub>6</sub>.

Wulff, L.; Mueller‐Buschbaum, Hk.

doi:10.1002/chin.199824020

Cited by 3 publications

(7 citation statements)

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“…Thus, it is possible that higher temperature synthetic routes are required to stabilize this phase. It is also possible that the crystals originally obtained by Wulff and Müller-Buschbaum were in fact SrMn 2/3 Te 4/3 O 6 , as their identification relies purely on single crystal X-ray diffraction and does not include an elemental analysis or any secondary confirmation of the oxidation state of Mn …”

Section: Resultsmentioning

confidence: 92%

“…Previously, Wulff and Muller-Buschbaum reported the flux growth of single crystalline SrMnTeO 6 , with manganese in a 4+ oxidation state. 7 Our attempt to obtain this phase via solid state reaction in air was not successful. Similarly, Kim et al also report a failed attempt to synthesize SrMnTeO 6 via solid state reaction in an evacuated quartz tube, which, interestingly, is a method that succeeds for PbMnTeO 6 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…It is also possible that the crystals originally obtained by Wulff and Muller-Buschbaum were in fact SrMn 2/3 Te 4/3 O 6 , as their identification relies purely on single crystal X-ray diffraction and does not include an elemental analysis or any secondary confirmation of the oxidation state of Mn. 7 The X-ray diffraction patterns for the five Sr(M,Te)O 6 (M = Cr, Mn, Fe, Co, Ni) compounds are presented in Figure 2. In each case, all of the Bragg reflections can all be indexed within a trigonal PbSb 2 O 6 -type space group.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Previously, Wulff and Müller-Buschbaum reported the flux growth of single crystalline SrMnTeO 6 , with manganese in a 4+ oxidation state . Our attempt to obtain this phase via solid state reaction in air was not successful.…”

Section: Resultsmentioning

confidence: 99%

“…This modification corresponds to space group P 6̅2 m (No. 189) and has been reported for SrMnTeO 6 and PbMnTeO 6 . (iii) A third possibility occurs when there is an intralayer site ordering of the octahedrally coordinated M and Te cations such that all the nearest neighbors for each M site are Te and vice versa.…”

Section: Introductionmentioning

confidence: 82%

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Sr(M,Te)₂O₆ (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

Hallas

Morosan

2019

Inorg. Chem.

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We report the synthesis and characterization of five new honeycomb tellurates with the PbSb2O6 structure type. These materials, SrM2/3Te4/3O6 (M = Cr, Mn, Fe) and SrM1/2Te3/2O6 (M = Co, Ni), are prepared by conventional solid state synthesis. Rietveld refinements of powder X-ray and neutron diffraction data reveal that these materials crystallize in the P3̅1m space group, in which M and Te are octahedrally coordinated and randomly distributed over the honeycomb sublattice. In three of these materials (M = Cr, Mn, Fe), the transition metal takes a 3+ oxidation state, and hence, charge neutrality necessitates that the honeycomb sublattice is 66% occupied by nonmagnetic Te. In the remaining two of these materials (M = Co, Ni), the transition metal takes a 2+ oxidation state, requiring that 75% of the honeycomb lattice is occupied by nonmagnetic Te. Thus, the honeycomb sublattice is highly diluted, as only 33% or 25% of the sites are occupied by a magnetic ion. These occupation values fall well-below the percolation threshold for the honeycomb lattice, p c = 70%. Accordingly, magnetic susceptibility measurements reveal no magnetic order or spin freezing down to 1.8 K.

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Section: Resultsmentioning

confidence: 92%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 82%

See 3 more Smart Citations

Sr(M,Te)₂O₆ (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

Hallas

Morosan

2019

Inorg. Chem.

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YCrWO₆: Polar and Magnetic Oxide with CaTa₂O₆-Related Structure

et al. 2018

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A new polar and magnetic oxide, YCrWO 6 , was successfully synthesized and characterized. YCrWO 6 crystallizes in polar orthorhombic space group Pna2 1 (no. 33) of edgesharing dimers of CrO 6 and WO 6 octahedra, which are connected by corner-sharing to form a three-dimensional framework structure with Y 3+ cations located in the channels. The structure of YCrWO 6 is related to that of CaTa 2 O 6 ; however, the ordering of Cr 3+ and W 6+ in the octahedral sites breaks the inversion symmetry of the parent CaTa 2 O 6 structure. X-ray absorption near edge spectroscopy of YCrWO 6 confirmed the oxidation state of Cr 3+ and W 6+ . Temperature-dependent optical second harmonic generation measurements on YCrWO 6 confirmed the noncentrosymmetric character and evidenced a noncentrosymmetric-tocentrosymmetric phase transition above 800 °C. Piezoresponse force microscopy measurements on YCrWO 6 at room temperature show strong piezoelectric domains. Magnetic measurements of YCrWO 6 indicate antiferromagnetic order at T N of ∼22 K with Weiss temperature of −34.66 K.

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A(II)GeTeO₆ (A = Mn, Cd, Pb): Non-Centrosymmetric Layered Tellurates with PbSb₂O₆-Related Structure

Kim

Deng

et al. 2017

Inorg. Chem.

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A(II)GeTeO 6 (A = Mn, Cd, Pb), new non-centrosymmetric (NCS) honeycomb-layered tellurates, were synthesized and characterized. A(II)GeTeO 6 (A = Mn, Cd, Pb) crystallize in trigonal space group P312 (No. 149) of edge-sharing Ge 4+ O 6 and Te 6+ O 6 octahedra, which form honeycomb-like-layers in the ab-plane with A(II) (A = Mn, Cd, Pb) cations located between the layers. Their crystal structures are PbSb 2 O 6 -related, and the ordering of Ge 4+ and Te 6+ in octahedral environment breaks the inversion symmetry of the parent PbSb 2 O 6 structure. The size of A(II) cation in six coordination is an important factor to stabilize PbSb 2 O 6 -based structure. Temperaturedependent optical second harmonic generation measurements on A(II)GeTeO 6 confirmed non-centrosymmetric character in the entire scanned temperature range (0 to 600 °C). The materials exhibit a powder SHG efficiency of ∼0.37 and ∼0.21 times of KH 2 PO 4 for PbGeTeO 6 and CdGeTeO 6 , respectively. Magnetic measurements of MnGeTeO 6 indicate anti-ferromagnetic order at T N ≈ 9.4 K with Weiss temperature of −22.47 K.

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ChemInform Abstract: Kagome Layers Connected by Isolated Trigonal SrO₆ Prisms in the Strontium Manganate(IV) Tellurate(VI): SrMnTeO₆.

Cited by 3 publications

References 1 publication

Sr(M,Te)₂O₆ (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

Sr(M,Te)₂O₆ (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

YCrWO₆: Polar and Magnetic Oxide with CaTa₂O₆-Related Structure

A(II)GeTeO₆ (A = Mn, Cd, Pb): Non-Centrosymmetric Layered Tellurates with PbSb₂O₆-Related Structure

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ChemInform Abstract: Kagome Layers Connected by Isolated Trigonal SrO6 Prisms in the Strontium Manganate(IV) Tellurate(VI): SrMnTeO6.

Cited by 3 publications

References 1 publication

Sr(M,Te)2O6 (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

Sr(M,Te)2O6 (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

YCrWO6: Polar and Magnetic Oxide with CaTa2O6-Related Structure

A(II)GeTeO6 (A = Mn, Cd, Pb): Non-Centrosymmetric Layered Tellurates with PbSb2O6-Related Structure

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Product

Resources

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ChemInform Abstract: Kagome Layers Connected by Isolated Trigonal SrO₆ Prisms in the Strontium Manganate(IV) Tellurate(VI): SrMnTeO₆.

Sr(M,Te)₂O₆ (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

Sr(M,Te)₂O₆ (M = Cr, Mn, Fe, Co, Ni): A Magnetically Dilute Family of Honeycomb Tellurates

YCrWO₆: Polar and Magnetic Oxide with CaTa₂O₆-Related Structure

A(II)GeTeO₆ (A = Mn, Cd, Pb): Non-Centrosymmetric Layered Tellurates with PbSb₂O₆-Related Structure