13451-18-8Relevant articles and documents
PbMn(IV)TeO6: A New Noncentrosymmetric Layered Honeycomb Magnetic Oxide
Kim, Sun Woo,Deng, Zheng,Li, Man-Rong,Sen Gupta, Arnab,Akamatsu, Hirofumi,Gopalan, Venkatraman,Greenblatt, Martha
, p. 1333 - 1338 (2016)
PbMnTeO6, a new noncentrosymmetric layered magnetic oxide was synthesized and characterized. The crystal structure is hexagonal, with space group P62m (No. 189), and consists of edge-sharing (Mn4+/Te6+)O6 trigon
DSC studies on crystallization mechanisms of tellurite glasses
Yukimitu,Oliveira,Araújo,Moraes,Avanci
, p. 157 - 161 (2005)
The purpose of this work is to study the 20Li2O-80TeO 2 glass using the differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques in order to understand the crystallization kinetics on this glass matrix. To study
The thermodynamic properties of six compounds in (tellurium + oxygen + hydrogen) from 10 to 1000 K
Cordfunke, E. H. P.,Cluistra, R.,Miltenburg, J. C. van
, p. 1079 - 1090 (1985)
The low-temperature (5 to 340 K) heat capacities of H6TeO6, H2TeO4, TeO2, Te4O9, Te2O5, and β-TeO3 have been determined by adiabatic calorimetry, and smoothed values of their thermodynamic functions Cp,m0(T), Sm0/sup
Robust 1D open rack-like architecture in coordination polymers of Anderson POMs [{Na4(H2O)14}{Cu(gly)}2] [TeMo6O24] and [{Cu(en)2}3{TeW 6O24}]: S
Dutta, Daipayan,Jana, Atish D.,Debnath, Mainak,Bhaumik, Asim,Marek, Jaromir,Ali, Mahammad
, p. 11551 - 11559 (2010)
Two novel organic-inorganic hybrid tungsto- and molybdo- telurates having formula [{Na4(H2O)14}{Cu(gly)} 2][TeMo6O24] (1){gly = glycine} and [{Cu(en)2}3{TeW6/sub
Synthesis, structure and thermal stability of tellurium oxides and oxide sulfate formed from reactions in refluxing sulfuric acidf
Ahmed, Mohammad A. K.,Fjellvag, Helmer,Kjekshus, Arne
, p. 4542 - 4549 (2000)
Reactions between Te, TeO2, TeCl4, TeO3 or H6TeO6 and 30-95 vt% H2SO4 were studied at temperatures up to the boiling point of the acid. Depending on the tellurium-containing reactant, H2SO4 concentrat
FORMATION, TRANSFORMATION, AND DECOMPOSITION OF Y2 TeO6.
Yamaguchi,Uegaki,Shimizu
, p. c. 378-c. 379 (1988)
A new metastable modification of Y//2TeO//6 was found to form while heating in air an amorphous material prepared by the simultaneous hydrolysis of yttrium and tellurium alkoxides. 7 Refs.
Solid-state nuclear magnetic resonance of spin-9/2 nuclei 115In and 209Bi in functional inorganic complex oxides
Griffith, Kent J.,Ding, Fenghua,Flynn, Steven
, p. 1077 - 1088 (2021)
Indium and bismuth are technologically important elements, in particular as oxides for optoelectronic applications. 115In and 209Bi are both I = 9/2 nuclei with high natural abundances and moderately high frequencies but large nuclear electric quadrupole moments. Leveraging the quadrupolar interaction as a measure of local symmetry and polyhedral distortions for these nuclei could provide powerful insights on a range of applied materials. However, the absence of reported nuclear magnetic resonance (NMR) parameters on these nuclei, particularly in oxides, hinders their use by the broader materials community. In this contribution, solid-state 115In and 209Bi NMR of three recently discovered quaternary bismuth or indium oxides are reported, supported by density functional theory calculations, numerical simulations, diffraction and additional multinuclear (27Al, 69,71Ga, and 121Sb) solid-state NMR measurements. The compounds LiIn2SbO6, BiAlTeO6, and BiGaTeO6 are measured without special equipment at 9.4 T, demonstrating that wideline techniques such as the QCPMG pulse sequence and frequency-stepped acquisition can enable straightforward extraction of quadrupolar tensor information in I = 9/2 115In and 209Bi even in sites with large quadrupolar coupling constants. Relationships are described between the NMR observables and local site symmetry. These are amongst the first reports of the NMR parameters of 115In, 121Sb, and 209Bi in oxides.
COMPOUND FORMATION IN THE MERCURY-CADMIUM-TELLURIUM-OXYGEN SYSTEM.
Brandt,Moritz
, p. 49 - 56 (1985)
Samples of this system were prepared by solid-state reaction of mixtures of the binary oxide components. Specific phases were identified and characterized by x-ray and microprobe techniques. For some of these compounds small single crystals could be prepared for which structural data are reported. Three groups of phases could be distinguished, most of them being of low symmetry, with Te in plus 4, plus 6, and in mixed oxidation states. The monotellurites HgTeO//3 and CdTeO//3 are structurally different and exhibit a large miscibility gap, whereas for the ditellurites complete solid solution between CdTe//2O//5 and HgTe//2O//5 was found. As to the tellurates, phases with the compositions MTeO//4 and M//3Te//2O//9 (M equals Hg, Cd) has been prepared. The Cd//3Te//2O//9-structure is stabilized by 30 mole% Hg. Another tellurate, monoclinic Hg//2TeO//4, was found to be isomorphous to the respective selenate and sulfate and is identical with the mineral magnolite.
Preparation, thermal behaviour and crystal structure of the basic mercury(II) tetraoxotellurate(VI), Hg2TeO5, and redetermination of the crystal structure of mercury(II) orthotellurate(VI), Hg3TeO6
Weil, Matthias
, p. 653 - 657 (2003)
Single crystals of Hg2TeO5 were obtained as dark-red parallelepipeds by reacting stoichiometric amounts of Hg(NO3)2 · H2O and H6TeO6 under hydrothermal conditions (250°C, 10d). The crystal structure (space group Pna21, Z = 4, a = 7.3462(16), b = 5.8635(12), c = 9.969(2) A, 1261 structure factors, 50 parameters, R[F2 > 2σ(F2)] = 0.0295) is characterized by corner-sharing [TeO6] octahedra forming isolated chains ∞1[TeO4/1O2/2] which extend parallel to [100]. The two crystallographically independent Hg atoms are located in-between the chains and interconnect the chains via common oxygen atoms. Amber coloured single crystals of Hg3TeO6 were prepared by heating a mixture of Hg, HgO and TeO3 together with small amounts of HgCl2 as mineralizer in an evacuated and sealed silica glass tube (520°C). The previously reported crystal structure has been re-investigated by means of single crystal X-ray data which reveal a symmetry reduction from Ia3d to Ia3 (Z = 16, a = 13.3808(6) A, 609 structure factors, 33 parameters, R[F2 > 2σ(F2)] = 0.0221). The crystal structure is made up of a body-centred packing of [TeO6] octahedra with the Hg atoms situated in the interstices of this arrangement. Upon heating, both title compounds decompose in a one-step mechanism under formation of TeO2 and loss of the appropriate amounts of elementary mercury and oxygen.
Temperature-dependent multi-k magnetic structure in multiferroic Co 3TeO6
Ivanov, S. A.,Tellgren, R.,Ritter, C.,Nordblad, P.,Mathieu, R.,et al.
, p. 63 - 72 (2012/01/31)
A complex magnetic order of the multiferroic compound Co 3TeO6 has been revealed by neutron powder diffraction studies on ceramics and crushed single crystals. The compound adopts a monoclinic structure (s.g. C2/c) in the studied temperature range 2-300 K but exhibits successive antiferromagnetic transitions at low temperature. Incommensurate antiferromagnetic order with the propagation vector k1= (0, 0.485, 0.055) sets in at 26 K. A transition to a second antiferro magnetic structure with k2 = (0, 0, 0) takes place at 21.1 K.Moreover, a transition to a commensurate antiferromagnetic structure wi th k3 = (0, 0.5, 0.25) occurs at 17.4 K. The magnetic structures have been determined by neutron powder diffraction using group theory analysis as a preliminary tool. Different coordinations of the Co2+ ions involved in the low-symmetry C2/c structure of Co3TeO6 render the exchange-interaction network very complex by itself. The observed magnetic phase transformations are interpreted as an evidence of competing magnetic interactions. The temperature dependent changes in the magnetic structure, derived from refinements of high-resolution neutron data, are discussed and possible mechanisms connectedwith the spin reorientations are described.
