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Investigation of crystal characteristics, Raman spectra, and microwave dielectric properties of Mg1-xZnxTa2O6 ceramics. Ann Ital Chir 2021. [DOI: 10.1016/j.jeurceramsoc.2021.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Arunkumar N, Naraginti S. Facile synthesis of nanostructured trirutile antimonates M(II)Sb2O6 (M = Co, Cu, Ni, Fe) and its visible photocatalytic studies. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1866605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Nagarajan Arunkumar
- PG & Research Department of Chemistry, Saraswathi Narayanan College, Madurai, India
| | - Saraschandra Naraginti
- School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, China
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Yang H, Zhang S, Chen Y, Yang H, Yuan Y, Li E. Crystal Chemistry, Raman Spectra, and Bond Characteristics of Trirutile-Type Co 0.5Ti 0.5TaO 4 Microwave Dielectric Ceramics. Inorg Chem 2019; 58:968-976. [PMID: 30576118 DOI: 10.1021/acs.inorgchem.8b03169] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel trirutile-type Co0.5Ti0.5TaO4 ceramic was reported here for the first time. The correlations between the sintering behavior, crystal structure, chemical bond, and dielectric properties were investigated. Pure Co0.5Ti0.5TaO4 ceramic was synthesized in the temperature range of 1000-1100 °C. A trirutile structure and refined parameters of a = b = 4.71163 Å, c = 9.13586 Å, and Vcell = 202.811 Å3 could be obtained (1075 °C). According to the P-V-L chemical bond theory, majority contributions to the dielectric constant originated from Ta-O bonds, owing to its largest bond ionicity and bond susceptibility values. The experimental dielectric constant is close to the theoretical values calculated via the P-V-L chemical bond theory and Clausius-Mossotti relationship. The Ta-O bonds that present the largest lattice energy are also the main factors influencing the intrinsic loss. The τf value is consistent with the oxygen distortions of the octahedron. More importantly, variations of the densification, average grain size, and grain boundary are crucial factors for development of the microwave dielectric properties. The Raman spectra and group theory were analyzed together, and the results indicated that the A1g mode at 687.45 cm-1, which reflects the stretching vibrations of the O anions, dominates the Raman vibrations. Typical microwave dielectric properties of Co0.5Ti0.5TaO4 ceramics were obtained when sintered at 1075 °C: εr = 40.69, Qf = 17291 GHz, and τf = 114.54 ppm/°C.
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Affiliation(s)
- Hongyu Yang
- National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Shuren Zhang
- National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Yawei Chen
- National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Hongcheng Yang
- National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Ying Yuan
- National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Enzhu Li
- National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education , University of Electronic Science and Technology of China , Chengdu 610054 , China
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Piccinelli F, Carrasco I, Ma CG, Srivastava AM, Bettinelli M. Disorder-Induced Breaking of the Local Inversion Symmetry in Rhombohedral Pyrochlores M2La3Sb3O14 (M = Mg or Ca): A Structural and Spectroscopic Investigation. Inorg Chem 2018; 57:9241-9250. [DOI: 10.1021/acs.inorgchem.8b01261] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabio Piccinelli
- Luminescent Materials Laboratory, DB and INSTM, UdR Verona, Università di Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Irene Carrasco
- Advanced Technology Institute, Department of Electrical and Electronic Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Chong-Geng Ma
- Luminescent Materials Laboratory, DB and INSTM, UdR Verona, Università di Verona, Strada Le Grazie 15, 37134 Verona, Italy
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Alok M. Srivastava
- GE Global Research, One Research Circle, Niskayuna, New York 12309, United States
| | - Marco Bettinelli
- Luminescent Materials Laboratory, DB and INSTM, UdR Verona, Università di Verona, Strada Le Grazie 15, 37134 Verona, Italy
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Sensitivity Tests of Pellets Made from Manganese Antimonate Nanoparticles in Carbon Monoxide and Propane Atmospheres. SENSORS 2018; 18:s18072299. [PMID: 30012964 PMCID: PMC6068886 DOI: 10.3390/s18072299] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/09/2018] [Accepted: 07/12/2018] [Indexed: 11/16/2022]
Abstract
Nanoparticles of manganese antimonate (MnSb₂O₆) were prepared using the microwave-assisted colloidal method for its potential application as a gas sensor. For the synthesis of the oxide, manganese nitrate, antimony chloride, ethylenediamine and ethyl alcohol (as a solvent) were used. The precursor material was calcined at 800 °C in air and analyzed by X-ray diffraction. The oxide crystallized into a hexagonal structure with spatial group P321 and cell parameters a = b = 8.8054 Å and c = 4.7229 Å. The microstructure of the material was analyzed by scanning electron microscopy (SEM), finding the growth of microrods with a size of around ~10.27 μm and some other particles with an average size of ~1.3 μm. Photoacoustic spectroscopy (PAS) studies showed that the optical energy band (Eg) of the oxide was of ~1.79 eV. Transmission electron microscopy (TEM) analyses indicated that the size of the nanoparticles was of ~29.5 nm on average. The surface area of the powders was estimated at 14.6 m²/g by the Brunauer⁻Emmett⁻Teller (BET) method. Pellets prepared from the nanoparticles were tested in carbon monoxide (CO) and propane (C₃H₈) atmospheres at different concentrations (0⁻500 ppm) and operating temperatures (100, 200 and 300 °C). The pellets were very sensitive to changes in gas concentration and temperature: the response of the material rose as the concentration and temperature increased. The results showed that the MnSb₂O₆ nanoparticles can be a good candidate to be used as a novel gas sensor.
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Balasubramaniam M, Balakumar S. Nanostructuring of a one-dimensional zinc antimonate electrode material through a precipitation strategy for use in supercapacitors. NEW J CHEM 2018. [DOI: 10.1039/c8nj00196k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrochemical properties of ZnSb2O6 nanorods consisting of two types of heterovalent metal cations, Zn2+ and Sb5+, have been investigated.
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Affiliation(s)
- M. Balasubramaniam
- National Centre for Nanoscience and Nanotechnology
- University of Madras
- Chennai – 600 025
- India
| | - S. Balakumar
- National Centre for Nanoscience and Nanotechnology
- University of Madras
- Chennai – 600 025
- India
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M. B, S. B. On the Development of Hierarchical Nanostructures of Graphene-Zinc antimonate as Inexpensive Electrode Materials for Supercapacitors. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Golubev A, Dinnebier RE, Schulz A, Kremer RK, Langbein H, Senyshyn A, Law JM, Hansen TC, Koo HJ, Whangbo MH. Structural and Magnetic Properties of the Trirutile-type 1D-Heisenberg Anti-Ferromagnet CuTa 2O 6. Inorg Chem 2017; 56:6318-6329. [PMID: 28481108 DOI: 10.1021/acs.inorgchem.7b00421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We prepared trirutile-type polycrystalline samples of CuTa2O6 by low-temperature decomposition of a Cu-Ta-oxalate precursor. Diffraction studies at room temperature identified a slight monoclinic distortion of the hitherto surmised tetragonal trirutile crystal structure. Detailed high-temperature X-ray and neutron powder diffraction investigations as well as Raman scattering spectroscopy revealed a structural phase transition at 503(3) K from the monoclinic structure to the tetragonal trirutile structure. GGA+U density functional calculations of the spin-exchange parameters as well as magnetic susceptibility and isothermal magnetization measurements reveal that CuTa2O6 is a new 1D Heisenberg magnet with predominant anti-ferromagnetic nearest-neighbor intrachain spin-exchange interaction of ∼50 K. Interchain exchange is a factor of ∼5 smaller. Heat capacity and low-temperature high-intensity neutron powder diffraction studies could not detect long-range order down to 0.45 K.
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Affiliation(s)
- Aleksandr Golubev
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - Robert E Dinnebier
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - Armin Schulz
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - Reinhard K Kremer
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - Hubert Langbein
- Institut für Anorganische Chemie der Technischen, Universität Dresden , Mommsenstr. 13, D-01062 Dresden, Germany
| | - Anatoliy Senyshyn
- Forschungsneutronenquelle Heinz Maier-Leibnitz, Technische Universität München , Lichtenbergstrasse 1, D-85747 Garching, Germany
| | - Joseph M Law
- Dresden High Magnetic Field Laboratory, Helmholtz-Zentrum Dresden-Rossendorf , D-01314 Dresden, Germany
| | | | - Hyun-Joo Koo
- Department of Chemistry and Research Institute for Basic Sciences, Kyung Hee University , Seoul 130-701, Republic of Korea
| | - Myung-Hwan Whangbo
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
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Guillén-Bonilla H, Flores-Martínez M, Rodríguez-Betancourtt VM, Guillen-Bonilla A, Reyes-Gómez J, Gildo-Ortiz L, de la Luz Olvera Amador M, Santoyo-Salazar J. A Novel Gas Sensor Based on MgSb2O6 Nanorods to Indicate Variations in Carbon Monoxide and Propane Concentrations. SENSORS 2016; 16:177. [PMID: 26840318 PMCID: PMC4801554 DOI: 10.3390/s16020177] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 01/23/2016] [Accepted: 01/25/2016] [Indexed: 11/16/2022]
Abstract
Bystromite (MgSb2O6) nanorods were prepared using a colloidal method in the presence of ethylenediamine, after a calcination step at 800 °C in static air. From X-ray powder diffraction analyses, a trirutile-type structure with lattice parameters a = 4.64 Å and c = 9.25 Å and space group P42/mnm was identified. Using scanning electron microscopy (SEM), microrods with sizes from 0.2 to 1.6 μm were observed. Transmission electron microscopy (TEM) analyses revealed that the nanorods had a length of ~86 nm and a diameter ~23.8 nm. The gas-sensing properties of these nanostructures were tested using pellets elaborated with powders of the MgSb2O6 oxide (calcined at 800 °C) at temperatures 23, 150, 200, 250 and 300 °C. The pellets were exposed to different concentrations of carbon monoxide (CO) and propane (C3H8) at these temperatures. The results showed that the MgSb2O6 nanorods possess excellent stability and high sensitivity in these atmospheres.
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Affiliation(s)
- Héctor Guillén-Bonilla
- Departamento de Ingeniería de Proyectos, CUCEI, Universidad de Guadalajara, 44410 Guadalajara, JAL, Mexico.
| | - Martín Flores-Martínez
- Departamento de Ingeniería de Proyectos, CUCEI, Universidad de Guadalajara, 44410 Guadalajara, JAL, Mexico.
| | | | - Alex Guillen-Bonilla
- Departamento de Ciencias Computacionales e Ingenierías, CUVALLES, Universidad de Guadalajara, Carretera Guadalajara-Ameca Km 45.5, 46600 Ameca, JAL, Mexico.
| | - Juan Reyes-Gómez
- Facultad de Ciencias, Universidad de Colima, 28045 Colima, COL, Mexico.
| | - Lorenzo Gildo-Ortiz
- Facultad de Ciencias, Universidad de Colima, 28045 Colima, COL, Mexico.
- Nanociencias y Nanotecnología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360 México, DF, Mexico.
| | - María de la Luz Olvera Amador
- Departamento de Ingeniería Eléctrica-SEES, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360 México, DF, Mexico.
| | - Jaime Santoyo-Salazar
- Departamento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360 México, DF, Mexico.
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Guillén-Bonilla A, Rodríguez-Betancourtt VM, Flores-Martínez M, Blanco-Alonso O, Reyes-Gómez J, Gildo-Ortiz L, Guillén-Bonilla H. Dynamic response of CoSb2O6 trirutile-type oxides in a CO2 atmosphere at low-temperatures. SENSORS 2014; 14:15802-14. [PMID: 25162232 PMCID: PMC4208146 DOI: 10.3390/s140915802] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 08/17/2014] [Accepted: 08/20/2014] [Indexed: 11/25/2022]
Abstract
Experimental work on the synthesis of the CoSb2O6 oxide and its CO2 sensing properties is presented here. The oxide was synthesized by a microwave-assisted colloidal method in presence of ethylenediamine after calcination at 600 °C. This CoSb2O6 oxide crystallized in a tetragonal structure with cell parameters a = 4.6495 and c = 9.2763 Å, and space group P42/mnm. To prove its physical, chemical and sensing properties, the oxide was subjected to a series of tests: Raman spectroscopy, Scanning Electron Microscopy (SEM) and impedance (Z) measurements. Microstructures, like columns, bars and hollow hemispheres, were observed. For the CO2 sensing test, a thick film of CoSb2O6 was used, measuring the impedance variations on the presence of air/CO2 flows (0.100 sccm/0.100 sccm) using AC (alternating current) signals in the frequency-range 0.1–100 kHz and low relative temperatures (250 and 300 °C). The CO2 sensing results were quite good.
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Affiliation(s)
- Alex Guillén-Bonilla
- Materials Science Graduate School, CUCEI (Centro Universitario de Ciencias Exactas e Ingenierías), University of Guadalajara, Blvd. M. García Barragán 1421, Guadalajara, Jalisco 44410, Mexico; E-Mails: (V.-M.R.-B.); (M.F.-M.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +52-33-38-36-45-00 (ext. 27941); Fax: +52-33-38-36-45-02
| | - Verónica-María Rodríguez-Betancourtt
- Materials Science Graduate School, CUCEI (Centro Universitario de Ciencias Exactas e Ingenierías), University of Guadalajara, Blvd. M. García Barragán 1421, Guadalajara, Jalisco 44410, Mexico; E-Mails: (V.-M.R.-B.); (M.F.-M.)
| | - Martín Flores-Martínez
- Materials Science Graduate School, CUCEI (Centro Universitario de Ciencias Exactas e Ingenierías), University of Guadalajara, Blvd. M. García Barragán 1421, Guadalajara, Jalisco 44410, Mexico; E-Mails: (V.-M.R.-B.); (M.F.-M.)
| | - Oscar Blanco-Alonso
- Physics Department, CUCEI (Centro Universitario de Ciencias Exactas e Ingenierías), University of Guadalajara, Blvd. M. García Barragán 1421, Guadalajara, Jalisco 44410, Mexico; E-Mail:
| | - Juan Reyes-Gómez
- Faculty of Science, University of Colima, Bernal Díaz del Castillo 340, Colima, Colima 28045, Mexico; E-Mail:
| | - Lorenzo Gildo-Ortiz
- Faculty of Chemical Sciences, University of Colima, Km 9 Carretera Colima-Coquimatlán, Coquimatlán 28400, Colima, Mexico; E-Mails: (L.G.-O.); (H.G.-B.)
| | - Héctor Guillén-Bonilla
- Faculty of Chemical Sciences, University of Colima, Km 9 Carretera Colima-Coquimatlán, Coquimatlán 28400, Colima, Mexico; E-Mails: (L.G.-O.); (H.G.-B.)
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Arunkumar N, Vijayaraghavan R. Enhanced photocatalytic activity of nanocrystalline N-doped ZnSb2O6: role of N doping, cation ordering, particle size and crystallinity. RSC Adv 2014. [DOI: 10.1039/c4ra12612b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanocrystalline N-doped ZnSb2O6 is synthesized in a single step in single phasic form by a novel combustion method.
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Affiliation(s)
- Nagarajan Arunkumar
- Centre for Excellence in Nano Materials
- Materials Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore-632 014, India
| | - Rajagopalan Vijayaraghavan
- Centre for Excellence in Nano Materials
- Materials Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore-632 014, India
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Bahfenne S, Frost RL. Raman spectroscopic study of the antimonate mineral roméite. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:637-639. [PMID: 20034848 DOI: 10.1016/j.saa.2009.11.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Accepted: 11/11/2009] [Indexed: 05/28/2023]
Abstract
Raman spectroscopy has been sued to study the antimony containing mineral roméite Ca(2)Sb(2)O(6)(OH,F,O) from three different origins. Roméite is a calcium antimonate mineral of the pyrochlore group. An intense Raman band at approximately 518 cm(-1) for roméite is assigned to the SbO nu(1) symmetric stretching mode and the band at 466 cm(-1) to the SbO nu(3) antisymmetric stretching mode. The Raman band at 303 cm(-1) is attributed to the OSbO bending mode. Some variation in band positions is observed and is attributed to the variation in composition between the three mineral samples.
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Affiliation(s)
- Silmarilly Bahfenne
- Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia
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Bahfenne S, Frost RL. Raman spectroscopic study of the antimony bearing mineral langbanite. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:710-712. [PMID: 20042366 DOI: 10.1016/j.saa.2009.11.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 11/16/2009] [Accepted: 11/18/2009] [Indexed: 05/28/2023]
Abstract
Raman spectroscopy has been used to characterise the antimonate mineral langbanite (Mn, Ca, Fe)(4)(2+)(Mn(3+), Fe(3+))(9)Sb(5+)Si(2)O(24). The mineral is characterised by a series of peaks in the 850-1200 cm(-1) region. Raman bands observed at 872 and 897cm(-1) are assigned to SbO antisymmetric and symmetric stretching vibrations, respectively. Associated with the SbO units are the bands at 330, 351 and 386 cm(-1) attributed to OSbO bending modes. Four Raman bands observed at 964, 986, 1012 and 1034 cm(-1) are assigned to SiO stretching vibrations. The observation of multiple SiO Raman bands provides evidence for the non-equivalence of the SiO units in the langbanite structure. Associated with the SiO units are the Raman bands at 542, 558, 646 and 671 cm(-1) attributed to OSiO bending modes. Low intensity bands are observed at 1130, 1200, 1432, 1718 and 1947 cm(-1) and are probably associated with delta SbOH deformation modes. Raman bands are observed at 3076 and 3476 cm(-1) and are assigned to strongly bonded water molecules involved in the langbanite structure. A sharp Raman band at 3680 cm(-1) are assigned to OH stretching vibrations. Raman spectroscopy provides evidence for water and OH units in the structure of langbanite and brings the formula of the mineral into question.
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Affiliation(s)
- Silmarilly Bahfenne
- Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia
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Bahfenne S, Frost RL. Vibrational spectroscopic study of the antimonate mineral bindheimite Pb2Sb2O6(O,OH). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 74:100-103. [PMID: 19505841 DOI: 10.1016/j.saa.2009.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 04/20/2009] [Accepted: 05/13/2009] [Indexed: 05/27/2023]
Abstract
Raman spectroscopy complimented with infrared spectroscopy has been used to characterise the antimonate mineral bindheimite Pb(2)Sb(2)O(6)(O,OH). The mineral is characterised by an intense Raman band at 656 cm(-1) assigned to SbO stretching vibrations. Other lower intensity bands at 664, 749 and 814 cm(-1) are also assigned to stretching vibrations. This observation suggests the non-equivalence of SbO units in the structure. Low intensity Raman bands at 293, 312 and 328c m(-1) are assigned to the OSbO bending vibrations. Infrared bands at 979, 1008, 1037 and 1058 cm(-1) may be assigned to deltaOH deformation modes of SbOH units. Infrared bands at 1603 and 1640 cm(-1) are assigned to water bending vibrations, suggesting that water is involved in the bindheimite structure. Broad infrared bands centred upon 3250 cm(-1) supports this concept. Thus the true formula of bindheimite is questioned and probably should be written as Pb(2)Sb(2)O(6)(O,OH,H(2)O).
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Affiliation(s)
- Silmarilly Bahfenne
- Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, Queensland 4001, Australia
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15
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Bates FE. Normal modes of tetragonal YBa2Cu3O6 and orthorhombic YBa2Cu3O7. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:322-327. [PMID: 9947156 DOI: 10.1103/physrevb.39.322] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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16
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M�ller-Buschbaum H, Halle G. Experimente zur Mischkristallbildung zwischen Zinktantalaten und -antimonaten: ZnTa2?xSbxO6 und Zn4Ta2?xSbxO9. Z Anorg Allg Chem 1989. [DOI: 10.1002/zaac.19895680104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Husson E, Repelin Y, Vandenborre M. Spectres de vibration et champ de force de l'antimoniate et de l'arseniate de calcium CaSb2O6 et CaAs2O6. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0584-8539(84)80128-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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