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Wlodarczyk D, Amilusik M, Kosyl KM, Chrunik M, Lawniczak-Jablonska K, Przybylinska H, Kosmela P, Strankowski M, Bulyk LI, Tsiumra V, Islam R, Autieri C, Xue F, Zajac M, Lysak A, Minikayev R, Bockowski M, Suchocki A. Synthesis and Properties of the Ba 2PrWO 6 Double Perovskite. Inorg Chem 2024; 63:10194-10206. [PMID: 38767516 DOI: 10.1021/acs.inorgchem.4c00567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
We report details on the synthesis and properties of barium praseodymium tungstate, Ba2PrWO6, a double perovskite that has not been synthesized before. Room-temperature (RT) powder X-ray diffraction identified the most probable space group (SG) as monoclinic I2/m, but it was only slightly distorted from the cubic structure. X-ray photoelectron spectroscopy confirmed that the initial (postsynthesis) material contained praseodymium in both 3+ and 4+ charge states. The former (Pr3+) disappeared after exposure to UV light at RT. Photoluminescence studies of Pr3+ revealed that Ba2PrWO6 is an insulator with a band gap exceeding 4.93 eV. Pressure-dependent Raman spectroscopy excluded the possibility of a phase transition up to 20 GPa; however, measurements between 8 and 873 K signified that there might be a change toward the lower symmetry SG below 200 K. Electron paramagnetic resonance spectra revealed the presence of interstitial oxygen which acts as a deep electron trap.
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Affiliation(s)
- Damian Wlodarczyk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Mikolaj Amilusik
- Institute of High Pressure, Polish Academy of Sciences, Sokołowska 29/37, PL-01142 Warsaw, Poland
| | - Katarzyna M Kosyl
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Maciej Chrunik
- Military University of Technology, Gen. Sylwestra Kaliskiego 2, PL-00908 Warsaw, Poland
| | | | - Hanka Przybylinska
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Paulina Kosmela
- Gdansk University of Technology, G. Narutowicza 11/12, PL-80233 Gdansk, Poland
| | - Michal Strankowski
- Gdansk University of Technology, G. Narutowicza 11/12, PL-80233 Gdansk, Poland
| | - Lev-Ivan Bulyk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Volodymyr Tsiumra
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Rajibul Islam
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
- Department of Physics, University of Alabama at Birmingham, Second Avenue 1720, South Birmingham, 35294 Alabama, United States
| | - Carmine Autieri
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
- Consiglio Nazionale delle Ricerche CNR-SPIN, UOS Salerno, C. S. V. Ferreri 12, Fisciano, IT-84084 Salerno, Italy
| | - Fei Xue
- Department of Physics, University of Alabama at Birmingham, Second Avenue 1720, South Birmingham, 35294 Alabama, United States
| | - Marcin Zajac
- Solaris Synchrotron NSRC, Jagiellonian University, Czerwone Maki 98, PL-30392 Cracow, Poland
| | - Anastasiia Lysak
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Roman Minikayev
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Michal Bockowski
- Institute of High Pressure, Polish Academy of Sciences, Sokołowska 29/37, PL-01142 Warsaw, Poland
| | - Andrzej Suchocki
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
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Zaraq A, Orayech B, Igartua JM, El Bouari A, Gregory DH, Gesing TM. Crystallography at non-ambient conditions and physical properties of the synthesized double perovskites, Sr 2(Co 1-xFe x)TeO 6. Dalton Trans 2023; 52:4086-4102. [PMID: 36880967 DOI: 10.1039/d2dt03543j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Polycrystalline double perovskite-type Sr2(Co1-xFex)TeO6 with various stoichiometric compositions (x = 0, 0.25, 0.5, 0.75, and 1) were synthesized by solid-state reactions in air. The crystal structures and phase transitions of this series at different temperature intervals were determined by X-ray powder diffraction, and from the obtained data the crystal structures were refined. It has been proven that for the compositions x = 0.25, 0.50, and 0.75, the phases crystallize at room temperature in the monoclinic space group I2/m. Down to 100 K, depending on the composition, these structures experience a phase transition from I2/m to P21/n. At high temperatures up to 1100 K their crystal structures show two further phase transitions. The first one is a first-order phase transition, from monoclinic I2/m to tetragonal I4/m, followed by a second-order phase transition to cubic Fm3̄m. Therefore, the phase transition sequence of this series detected at temperatures ranging from 100 K to 1100 K is P21/n → I2/m → I4/m → Fm3̄m. The temperature-dependent vibrational features of the octahedral sites were investigated by Raman spectroscopy, which furthermore complements the XRD results. A decrease in the phase-transition temperature with increasing iron content has been observed for these compounds. This fact is explained by the progressive diminishing of the distortion of the double-perovskite structure in this series. Using room-temperature Mössbauer spectroscopy, the presence of two iron sites is confirmed. The two different transition metal cations Co and Fe at the B sites allow exploring their effect on the optical band-gap.
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Affiliation(s)
- Asmaa Zaraq
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Bremen, Germany.
| | - Brahim Orayech
- Maxam, Technology Center Energetic Materials, Carretera N-623 km 28, 09141Quintanilla Sobresierra, Burgos, Spain
| | - Josu M Igartua
- Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU: Leioa, Bizkaia, España
| | - Abdeslam El Bouari
- Laboratory of Physical-Chemistry, Materials and Catalysis, Department of Chemistry, Faculty of Sciences Ben M'Sik, University Hassan II of Casablanca, Casablanca, Morocco
| | - Duncan H Gregory
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow G12 8QQ, UK
| | - Thorsten M Gesing
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Bremen, Germany. .,University of Bremen, MAPEX Center for Materials and Processes, Bremen, Germany
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Mohamed Saadon NAF, Taib NI, Loy CW, Mohamed Z. Role of Ca 2+ doping on the enhancement of dielectric properties of Sr 2-xCa xNiWO 6 for energy storage device application. Sci Rep 2023; 13:1246. [PMID: 36690692 PMCID: PMC9871018 DOI: 10.1038/s41598-023-28296-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
In this paper, Sr2-xCaxNiWO6 (x = 0.00, 0.02, 0.04, 0.06) were synthesized using a solid-state reaction method. The crystal structure, optical and dielectric properties of the compounds were examined using X-ray diffraction (XRD), scanning electron microscope (SEM) with energy dispersive (EDX) analysis, Ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy and electrochemical impedance spectroscopy respectively. The Rietveld refinement of XRD confirmed that the compounds crystallized in a tetragonal structure with a space group I4/m. According to the SEM images, the grain sizes of the compounds decreased as the dopant increased. The UV-vis analysis revealed that the band gap energy of the compounds decreased from 3.17 eV to 3.13 eV as the amount of doping increased from x = 0.00 to x = 0.06. A dielectric characterization showed that the dielectric constant (ε') and dielectric loss (tan δ) for all compounds possessed a similar trend where it was higher in low-frequency area (~ 1 Hz) and dropped instantaneously with the enhancement of frequency up to 1 MHz until it reached constant values.
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Affiliation(s)
| | - Nurul Izza Taib
- grid.412259.90000 0001 2161 1343Faculty of Applied Sciences, Universiti Teknologi MARA, Perak Branch, Tapah Campus, 35400 Tapah Road, Perak Malaysia
| | - Chee Wah Loy
- grid.1005.40000 0004 4902 0432ARC Training Centre for Automated Manufacture of Advanced Composites, University of New South Wales, Sydney, NSW 2052 Australia
| | - Zakiah Mohamed
- grid.412259.90000 0001 2161 1343Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia
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Punga L, Abbassi A, Toma M, Alupului T, Doroftei C, Dobromir M, Timpu D, Doroftei F, Hrostea L, Rusu GG, Razouk A, Iacomi F. Studies of the Structure and Optical Properties of BaSrMgWO 6 Thin Films Deposited by a Spin-Coating Method. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2756. [PMID: 36014622 PMCID: PMC9414463 DOI: 10.3390/nano12162756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Highly transparent thin films with the chemical formula BaSrMgWO6 were deposited by spin coating using a solution of nitrates of Ba, Sr, and Mg and ammonium paratungstate in dimethylformamide with a Ba:Sr:Mg:W ratio = 1:1:1:1. XRD, SEM, EDX, and XPS investigations evidenced that annealing at 800 °C for 1 h results in an amorphous structure having a precipitate on its surface, and that supplementary annealing at 850 °C for 45 min forms a nanocrystalline structure and dissolves a portion of the precipitates. A textured double perovskite cubic structure (61.9%) was found, decorated with tetragonal and cubic impurity phases (12.7%), such as BaO2, SrO2, and MgO, and an under-stoichiometric phase (24.4%) with the chemical formula Ba2-(x+y) SrxMgyWO5. From transmittance measurements, the values of the optical band gap were estimated for the amorphous (Egdir = 5.21 eV, Egind = 3.85 eV) and nanocrystalline (Egdir = 4.69 eV, Egind = 3.77 eV) phases. The presence of a lattice disorder was indicated by the high Urbach energy values and weak absorption tail energies. A decrease in their values was observed and attributed to the crystallization process, lattice strain diminution, and cation redistribution.
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Affiliation(s)
- Luciana Punga
- Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - Abderrahman Abbassi
- LRPSI, Polydisciplinary Faculty of Beni-Mellal, Sultan Moulay Slimane University, Mghila BP 592, Beni-Mellal 23000, Morocco
| | - Mihaela Toma
- Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - Teodor Alupului
- Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - Corneliu Doroftei
- CERNESIM-ICI, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - Marius Dobromir
- Department of Exact and Natural Sciences, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - Daniel Timpu
- Petru Poni Institute of Macromolecular Chemistry, 1A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Florica Doroftei
- Petru Poni Institute of Macromolecular Chemistry, 1A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Laura Hrostea
- RAMTECH, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - George G. Rusu
- Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
| | - Abdelati Razouk
- LGEM, FST, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, Morocco
| | - Felicia Iacomi
- Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania
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Wlodarczyk D, Amilusik M, Kosyl KM, Chrunik M, Lawniczak-Jablonska K, Strankowski M, Zajac M, Tsiumra V, Grochot A, Reszka A, Suchocki A, Giela T, Iwanowski P, Bockowski M, Przybylinska H. Synthesis Attempt and Structural Studies of Novel A 2CeWO 6 Double Perovskites (A 2+ = Ba, Ca) in and outside of Ambient Conditions. ACS OMEGA 2022; 7:18382-18408. [PMID: 35694470 PMCID: PMC9178617 DOI: 10.1021/acsomega.2c00669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/21/2022] [Indexed: 05/25/2023]
Abstract
This comprehensive work showcases two novel, rock-salt-type minerals in the form of amphoteric cerium-tungstate double perovskite and ilmenite powders created via a high-temperature solid-state reaction in inert gases. The presented studies have fundamental meaning and will mainly focus on a detailed synthesis description of undoped structures, researching their possible polymorphism in various conditions and hinting at some nontrivial physicochemical properties like charge transfer for upcoming optical studies after eventual doping with selectively chosen rare-earth ions. The formerly mentioned, targeted A2BB'X6 group of compounds contains mainly divalent alkali cations in the form of XIIA = Ba2+, Ca2+ sharing, here, oxygen-arranged clusters (IIX = O2-) with purposely selected central ions from f-block VIB = Ce4/3+ and d-block VIB' = W4/5/6+ since together they often possess some exotic properties that could be tuned and implemented into futuristic equipment like sensors or energy converters. Techniques like powder XRD, XPS, XAS, EPR, Raman, and FTIR spectroscopies alongside DSC and TG were involved with an intent to thoroughly describe any possible changes within these materials. Mainly, to have a full prospect of any desirable or undesirable phenomena before diving into more complicated subjects like: energy or charge transfer in low temperatures; to reveal whether or not the huge angular tilting generates large enough dislocations within the material's unit cell to change its initial properties; or if temperature and pressure stimuli are responsible for any phase transitions and eventual, irreversible decomposition.
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Affiliation(s)
- Damian Wlodarczyk
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Mikolaj Amilusik
- Institute
of High Pressure, Polish Academy of Sciences, Sokolowska 29/37, PL-01142 Warsaw, Poland
| | - Katarzyna M. Kosyl
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Maciej Chrunik
- Military
University of Technology, Gen. Sylwestra Kaliskiego 2, PL-00908 Warsaw, Poland
| | | | - Michal Strankowski
- Chemical
Faculty, Gdansk University of Technology, G. Narutowicza 11/12, PL-80233 Gdansk, Poland
| | - Marcin Zajac
- Solaris
Synchrotron NSRC, Jagiellonian University, Czerwone Maki 98, PL-30392 Cracow, Poland
| | - Volodymyr Tsiumra
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Aneta Grochot
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Anna Reszka
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Andrzej Suchocki
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Tomasz Giela
- Solaris
Synchrotron NSRC, Jagiellonian University, Czerwone Maki 98, PL-30392 Cracow, Poland
| | - Przemyslaw Iwanowski
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Michal Bockowski
- Institute
of High Pressure, Polish Academy of Sciences, Sokolowska 29/37, PL-01142 Warsaw, Poland
| | - Hanka Przybylinska
- Institute
of Physics, Polish Academy of Sciences, Ave. Lotnikow 32/46, PL-02668 Warsaw, Poland
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6
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Alias FIH, Rajmi R, Maulud MF, Mohamed Z. Structural, optical and dielectric properties of tellurium-based double perovskite Sr 2Ni 1-x Zn x TeO 6. RSC Adv 2021; 11:31631-31640. [PMID: 35496881 PMCID: PMC9041436 DOI: 10.1039/d1ra03662a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 09/18/2021] [Indexed: 12/04/2022] Open
Abstract
In this paper, Sr2Ni1−xZnxTeO6 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) double perovskite compounds were synthesised by the conventional solid-state method, and the structural, optical and dielectric properties were investigated. The Rietveld refinement of X-ray diffraction data shows that all compounds were crystallised in monoclinic symmetry with the I2/m space group. Morphological scanning electron microscopy reported that the grain sizes decreased as the dopant increased. The UV-vis diffuse reflectance spectroscopy conducted for all samples found that the optical band gap energy, Eg, increased from 3.71 eV to 4.14 eV. The dielectric permittivity ε′ values increased for the highest Zn-doped composition, Sr2Ni0.2Zn0.8TeO6, being ∼1000 and ∼60 in the low- and high-frequency range, respectively. All samples exhibited low dielectric loss (tan δ ≤ 0.20) in the range of 104–105 Hz frequency. Impedance measurement revealed that grain resistance decreased with enhancement in Zn content in the Sr2NiTeO6 crystal lattice. In this paper, Sr2Ni1−xZnxTeO6 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) double perovskite compounds were synthesised by the conventional solid-state method, and the structural, optical and dielectric properties were investigated.![]()
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Affiliation(s)
| | - Rozilah Rajmi
- Faculty of Applied Sciences, Universiti Teknologi MARA, Perlis Branch, Arau Campus 02600 Arau Perlis Malaysia
| | - Mohd Fauzi Maulud
- Faculty of Applied Sciences, Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia
| | - Zakiah Mohamed
- Faculty of Applied Sciences, Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia
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