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The efficiency of glass ceramic sealants plays a crucial role in high temperature applications performance and durability, such as oxygen separation from air. In order to develop suitable sealants, operating at about 950C, several…

Materials Science · Physics 2015-07-14 A. I. Borhan , M. Gromada , G. G. Nedelcu , L. Leontie

Ferric Chloride-Bismaleimide (FeCl3-BMI) and Titania-Bismaleimide (TiO2-BMI) composite were synthesized using PVA as a binder. The composite systems were deposited on glass slide as a homogenous coating. XRD and FTIR studies of the…

Materials Science · Physics 2016-08-09 A. S. Bhattacharyya , Nitesh Rajak , Abhishek Sharma , P. Kommu

In this work we performed a detailed investigation about ordering in \bcn perovskite. The sintering temperature and time were changed to obtain samples with different ordering. The order parameters were probed by Raman spectroscopy based on…

The transparent Er, Nd co-doped Yttria ceramics with transparency around 78 percentage (in 500 - 2000 nm range without Fresnels correction) were fabricated successfully. It involved nanoparticle synthesis by coprecipitation method and…

Materials Science · Physics 2018-01-16 Pratik Deshmukh , S. Satapathy , Anju Ahlawat , M K Tiwari , A. K. Karnal

A mathematical model is presented for the Joule heating that occurs in a ceramic powder compact during the process of flash sintering. The ceramic is assumed to have an electrical conductivity that increases with temperature, and this leads…

Analysis of PDEs · Mathematics 2015-12-15 Andrew A. Lacey , Ian J. Hewitt , Richard I. Todd

Simultaneous occurrence of big ferroelectricity and strong ferromagnetism has been observed in Barium Hexaferrite ceramics. Barium hexaferrite (BaFe12O19) powders with hexagonal crystal structure have been successfully synthesized by…

Materials Science · Physics 2012-01-20 Xiuna Chen , Guolong Tan

The current controversies about the existence of an intermediate 'beta' phase of BiFeO_3 and the high temperature paraelectric 'gamma' phase are resolved by studying the sequence of ferroic transitions in 0.8BiFeO_3-0.2Pb(Fe_1/2Nb_1/2)O_3…

Materials Science · Physics 2009-06-08 Jay Prakash Patel , Anar Singh , Dhananjai Pandey

A detailed investigation using variable temperature powder neutron diffraction demonstrates that BiFeO3 undergoes a phase transition from the ferroelectric alpha phase (rhombohedral, R3c) to a paraelectric beta phase (orthorhombic, Pbnm)…

Materials Science · Physics 2009-08-21 Donna C. Arnold , Kevin S. Knight , Finlay D. Morrison , Philip Lightfoot

Infrared reflectance spectra of an epitaxial Bi2FeCrO6 thin film prepared by pulsed laser deposition on LaAlO3 substrate were recorded between 10 and 900 K. No evidence for a phase transition to the paraelectric phase was observed, but some…

Materials Science · Physics 2009-01-06 S. Kamba , D. Nuzhnyy , R. Nechache , K. Zaveta , D. Niznansky , E. Santava , C. Harnagea , A. Pignolet

Liquid water and vitreous B$_2$O$_3$ are the endpoints of a continuous range of random networks in which hydrogen bonds gradually replace covalent bonds. Previous work has shown that glasses can be obtained by quenching in the range $x \le$…

Disordered Systems and Neural Networks · Physics 2009-11-23 Ralf Bruning , Justine B. Galbraith , Katherine E. Braedley , Jonathan Johnstone , Jaqcues Robichaud , Subramanian Balaji , Yahia Djaoued

We demonstrate a strategy for simulating wide-range X-ray scattering patterns, which spans the small- and wide scattering angles as well as the scattering angles typically used for Pair Distribution Function (PDF) analysis. Such simulated…

We report an experimental study of the bimagnetic nanocomposites CoFe2/CoFe2O4.The precursor material, CoFe2O4 was prepared using the conventional stoichiometric combustion method. The nanocomposite CoFe2/CoFe2O4 was obtained by total…

The possibility of obtaining relatively high dielectric constant polymer-ceramic composite by incorporating the giant dielectric constant material, CaCu3Ti4O12 (CCTO) in a Poly(vinylidene fluoride) (PVDF) polymer matrix by melt mixing and…

Materials Science · Physics 2013-01-18 P. Thomasa , K. T. Varughese , K. Dwarakanath , K. B. R. Varma

Superlattices are materials created by the alternating growth of two chemically different materials. The direct consequence of creating a superlattice is the folding of the Brillouin zone which gives rise to additional electronic bands and…

Direct and hybrid microwave sintering of 3Y-ZrO 2 are comparatively studied at frequency of 2.45 GHz. Using the continuum theory of sintering, a fully coupled electromagnetic-thermalmechanical (EMTM) finite element simulation is carried out…

Materials Science · Physics 2020-12-01 Charles Manière , Tony Zahrah , Eugene A. Olevsky

A theoretically supported experimental study of the (1-x)LaFeO3.xLaMnO3 (LFO-LMO) solid solution is being reported for the first time which reveals a phase transformation from the Pbnm and R3-c phase at a chemical composition of x=0.625.…

Materials Science · Physics 2020-12-29 E. G. Rini , Mayanak. K. Gupta , R. Mittal , A. Mekki , Mohammed H. Al Saeed , Somaditya Sen

In this study, the effects of synthesis method and dopant Neodymium ion on the ferroelectric properties and photocatalytic activity of bismuth ferrite were studied. BiFeO3 (BFO) and Bi0.8Nd0.2FeO3 (BNFO) nanoparticles were prepared through…

Applied Physics · Physics 2018-09-05 Hamed Maleki

The lattice thermal conductivity ($\kappa$) of two ceramic materials, cerium dioxide (CeO$_2$) and magnesium oxide (MgO), is computed up to 1500 K using first principles and the phonon Boltzmann Transport Equation (PBTE) and compared to…

Three liquid crystalline equimolar mixtures are formulated, each containing the MHPOBC compound and the homolog from the 3FmHPhF6 series with m = 4, 5, and 6. The properties of the mixtures are investigated by differential scanning…

Soft Condensed Matter · Physics 2025-06-19 Aleksandra Deptuch , Anna Paliga , Anna Drzewicz , Michał Czerwiński , Ewa Juszyńska-Gałązka

Solid solutions of (1-x)LaFeO3-(x)PbTiO3 (0<x<1) have been prepared by conventional solid-state reaction. These complex perovskites have been studied by means of X-ray (XRPD) and neutron powder (NPD) diffraction, complemented with…