Browsing School of Engineering and Materials Science by Author "Abrahams, I"
Now showing items 1-18 of 18
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Bi3.25La0.75Ti2.5Nb0.25(Fe0.5Co0.5)(0.25)O-12, a single phase room temperature multiferroic
Li, Z; Tao, K; Ma, J; Gao, Z; Koval, V; Jiang, C; Viola, G; Zhang, H; Mahajan, A; Cao, J (2018-03-21) -
Facile one-step synthesis and enhanced photocatalytic activity of WC/ferroelectric nanocomposite
Zhang, M; Wang, Y; Liu, J; Thangamuthu, M; Yue, Y; Yan, Z; Feng, J; Zhang, D; Zhang, H; Guan, S (Royal Society of Chemistry (RSC), 2021-08)The development of noble-metal-free co-catalysts is seen as a viable strategy for improving the performance of semiconductor photocatalysts. Although the photocatalytic efficiency of ferroelectrics is typically low, it can ... -
High Tunability and Low Loss in Layered Perovskite Dielectrics through Intrinsic Elimination of Oxygen Vacancies
Zhang, H; Gidden, H; Saunders, TG; Liu, N; Aurallo-Peters, V; Xu, X; Palma, M; Reece, MJ; Abrahams, I; Yan, H (American Chemical Society (ACS), 2020-11)Dielectric materials with moderate dielectric permittivity, high tunability, and low loss are critical in modern communication technology. However, high tunability is often associated with high loss and high dielectric ... -
Isolation of a ferroelectric intermediate phase in antiferroelectric dense sodium niobate ceramics
Zhang, H; Yang, B; Yan, H; Abrahams, I (2019-10-15) -
Microwave tunability in tin substituted barium titanate
Zhang, H; Giddens, H; Saunders, TG; Palma, M; Abrahams, I; Yan, H; Hao, Y (Elsevier, 2023-10)The relationship between low and high frequency tunabilities in tin substituted barium titanate (BaTi1-xSnxO3, Sn-BTOx, x = 0.12, 0.14 and 0.16) ceramics is investigated. Although X-ray powder diffraction reveals an average ... -
Phase evolution and electrical behaviour of samarium-substituted bismuth ferrite ceramics
Yu, C; Viola, G; Zhang, D; Zhou, K; Koval, V; Mahajan, A; Wilson, RM; Tarakina, NV; Abrahams, I; Yan, H (2018-04) -
Phase transformations in an Aurivillius layer structured ferroelectric designed using the high entropy concept
Zhang, M; Xu, X; Ahmed, S; Yue, Y; Palma, M; Svec, P; Gao, F; Abrahams, I; Reece, MJ; Yan, H (2022) -
Phase transitions in bismuth-modified silver niobate ceramics for high power energy storage
Tian, Y; Jin, L; Zhang, H; Xu, Z; Wei, X; Viola, G; Abrahams, I; Yan, H (Royal Society of Chemistry (RSC), 2017-07-31)<p>Ceramics of composition Ag<sub>1−3x</sub>Bi<sub>x</sub>NbO<sub>3</sub> (0.005 ≤ <italic>x</italic> ≤ 0.040) were prepared by solid state methods and their structure and electrical behavior were characterized with a view ... -
Phase transitions in RbPrNb<inf>2</inf>O<inf>7</inf>, a layer structured ferroelectric with a high Curie point
Yan, Z; Zhang, D; Zhou, X; Zhang, M; Yue, Y; Zhang, L; Xue, G; Luo, H; Abrahams, I; Yan, H (Elsevier, 2020-09-22)The development of lead-free ferroelectric ceramics exhibiting a high Curie point is regarded as a key aspect of improving the overall performance of high temperature sensing devices. Two-layer Dion-Jacobson phases have ... -
Significantly enhanced energy storage density of sandwich-structured (Na0.5Bi0.5)(0.93)Ba0.07TiO3/P(VDF-HFP) composites induced by PVP-modified two-dimensional platelets
Jiang, C; Zhang, D; Zhou, K; Zhou, X; Luo, H; Abrahams, I (2016) -
Silver niobate based lead-free ceramics with high energy storage density
Yan, Z; Zhang, D; Zhou, X; Qi, H; Luo, H; Zhou, K; Abrahams, I; Yan, H (Royal Society of Chemistry (RSC), 2019)<p>Electrical field dependence of permittivity in (1 − <italic>x</italic>)AN-<italic>x</italic>BZN ceramics. Arrow directions down, up and down then up are related to domain switching, field induced transition and domain ... -
Solution-Processed Epitaxial Growth of Arbitrary Surface Nanopatterns on Hybrid Perovskite Monocrystalline Thin Films.
Zhang, J; Guo, Q; Li, X; Li, C; Wu, K; Abrahams, I; Yan, H; Knight, MM; Humphreys, CJ; Su, L (2020-09-22)Semiconductor surface patterning at the nanometer scale is crucial for high-performance optical, electronic, and photovoltaic devices. To date, surface nanostructures on organic-inorganic single-crystal perovskites have ... -
SrFe12O19 based ceramics with ultra-low dielectric loss in the millimetre-wave band
Yu, C; Zeng, Y; Yang, B; Wylde, R; Donnan, R; Wu, J; Xu, J; Gao, F; Abrahams, I; Reece, M (2018-04-02) -
Structural Evolution in BiNbO4.
Yu, C; Viola, G; Zhang, D; Stroscio, Z; Hu, Z; Eskilla, VR; Grasso, S; Wilson, RM; Zhou, K; Bonini, N (American Chemical Society, 2021-06-01)The sequence of transitions between different phases of BiNbO4 has been thoroughly investigated and clarified using thermal analysis, high-resolution neutron diffraction, and Raman spectroscopy. The theoretical optical ... -
Structure and dielectric properties in Mg/Nb co-substituted bismuth sodium titanate
Zhang, H; Yan, H; Abrahams, I (Elsevier, 2023-12-25)A systematic study of pseudo-isovalent B site co-substitution of Ti4+ by Mg2+ and Nb5+ in bismuth sodium titanate is presented. A complete solid solution in the Bi0.5Na0.5Ti1−x(Mg1/3Nb2/3)xO3 system is formed. With increasing ... -
Structure and dielectric properties of double A-site doped bismuth sodium titanate relaxor ferroelectrics for high power energy storage applications
Zhang, H; Yang, B; Fortes, AD; Yan, H; Abrahams, I (Royal Society of Chemistry, 2020-01-01)The structural and dielectric properties of barium/strontium substituted Bi0.5Na0.5TiO3 were examined in compositions of general formula (Ba0.4Sr0.6TiO3)x(Bi0.5Na0.5TiO3)1−x. An average classic cubic perovskite structure ... -
Terahertz Reading of Ferroelectric Domain Wall Dielectric Switching
Zhang, M; Chen, Z; Yue, Y; Chen, T; Yan, Z; Jiang, Q; Yang, B; Eriksson, M; Tang, J; Zhang, D (American Chemical Society (ACS), 2021-03)Ferroelectric domain walls (DWs) are important nanoscale interfaces between two domains. It is widely accepted that ferroelectric domain walls work idly at terahertz (THz) frequencies, consequently discouraging efforts to ... -
Ultrafast Electric Field-Induced Phase Transition in Bulk Bi0.5Na0.5TiO3 under High-Intensity Terahertz Irradiation
Zhang, M; McKinnon, RA; Viola, G; Yang, B; Zhang, D; Reece, MJ; Abrahams, I; Yan, H (American Chemical Society (ACS), 2020-12)Ultrafast polarization switching is being considered for the next generation of ferroelectric-based devices. Recently, the dynamics of the field-induced transitions associated with this switching have been difficult to ...