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Iron Oxychalcogenides and Their Photocurrent Responses. (2024)
Journal Article
Al Bacha, S., Saitzek, S., Kabbour, H., & McCabe, E. E. (2024). Iron Oxychalcogenides and Their Photocurrent Responses. Inorganic Chemistry, 63(7), 3292 - 3302. https://doi.org/10.1021/acs.inorgchem.3c03672

We report here the results of an experimental investigation of the electronic properties and photocurrent responses of the CaFeO and La O Fe O phases and a computational study of the electronic structure of polar CaFeOSe. We find that both CaFeO (... Read More about Iron Oxychalcogenides and Their Photocurrent Responses..

Low Carrier Effective Masses in Photoactive Sr 2 Sb 2 O 2 Q 3 ( Q = S, Se): The Role of the Lone Pair (2023)
Journal Article
Al Bacha, S., Saitzek, S., Roussel, P., Huvé, M., McCabe, E. E., & Kabbour, H. (2023). Low Carrier Effective Masses in Photoactive Sr 2 Sb 2 O 2 Q 3 ( Q = S, Se): The Role of the Lone Pair. Chemistry of Materials, 35(22), 9528-9541. https://doi.org/10.1021/acs.chemmater.3c01298

The crystal structure, electronic properties, photocatalytic activity, and photocurrent response of a new antimony oxysulfide Sr2Sb2O2S3 and its oxyselenide analogue Sr2Sb2O2Se3 are presented. Both oxychalcogenides contain heteroleptic SbOQ 4 units w... Read More about Low Carrier Effective Masses in Photoactive Sr 2 Sb 2 O 2 Q 3 ( Q = S, Se): The Role of the Lone Pair.

Bi2CoO2F4 – a polar, ferrimagnetic Aurivillius oxide-fluoride (2022)
Journal Article
Scott, E. A., Mitoudi Vagourdei, E., Johnsson, M., Cascos, V., John, F., Pickup, D., …McCabe, E. (2022). Bi2CoO2F4 – a polar, ferrimagnetic Aurivillius oxide-fluoride. Chemistry of Materials, 34(21), 9775-9785. https://doi.org/10.1021/acs.chemmater.2c02745

Aurivillius oxides have been a research focus due to their ferroelectric properties, but by replacing oxide ions by fluoride, divalent magnetic cations can be introduced, giving Bi2MO2F4 (M = Fe, Co, and Ni). Our combined experimental and computation... Read More about Bi2CoO2F4 – a polar, ferrimagnetic Aurivillius oxide-fluoride.

Joint machine learning analysis of muon spectroscopy data from different materials (2022)
Journal Article
Tula, T., Möller, G., Quintanilla, J., Giblin, S., Hillier, A., McCabe, E., …Gibson, S. (2022). Joint machine learning analysis of muon spectroscopy data from different materials. Journal of Physics: Conference Series, 2164, Article 012018. https://doi.org/10.1088/1742-6596/2164/1/012018

Machine learning (ML) methods have proved to be a very successful tool in physical sciences, especially when applied to experimental data analysis. Artificial intelligence is particularly good at recognizing patterns in high dimensional data, where i... Read More about Joint machine learning analysis of muon spectroscopy data from different materials.

Photocatalytic and Photocurrent Responses to Visible Light of the Lone-Pair-Based Oxysulfide Sr6Cd2Sb6S10O7 (2022)
Journal Article
Al Bacha, S., Saitzek, S., McCabe, E. E., & Kabbour, H. (2022). Photocatalytic and Photocurrent Responses to Visible Light of the Lone-Pair-Based Oxysulfide Sr6Cd2Sb6S10O7. Inorganic Chemistry, 61(46), 18611-18621. https://doi.org/10.1021/acs.inorgchem.2c03040

We present a combined experimental and computational study on the recently reported oxysulfide Sr6Cd2Sb6S10O7. Our spectroscopy and photoelectrochemical measurements and tests for photocatalytic activity indicate the potential of Sr6Cd2Sb6S10O7 for p... Read More about Photocatalytic and Photocurrent Responses to Visible Light of the Lone-Pair-Based Oxysulfide Sr6Cd2Sb6S10O7.

Fe3-xInSnxO6 (x = 0, 0.25, 0.5): A family of corundum derivatives with Sn-induced polarization and above room temperature antiferromagnetic ordering (2022)
Journal Article
Frank, C. E., McCabe, E. E., Orlandi, F., Manuel, P., Tan, X., Deng, Z., …Greenblatt, M. (2022). Fe3-xInSnxO6 (x = 0, 0.25, 0.5): A family of corundum derivatives with Sn-induced polarization and above room temperature antiferromagnetic ordering. Chemistry of Materials, 34(11), 5020-5029. https://doi.org/10.1021/acs.chemmater.2c00312

Three new double corundum derived compounds, Fe3-xInSnxO6, (x = 0. 0.25, 0.5) were synthesized at high pressure and temperature (6 GPa, 1400-1450 C) All the compounds order antiferromagnetically well above room temperature, TN = 608 K, 532K, and 432... Read More about Fe3-xInSnxO6 (x = 0, 0.25, 0.5): A family of corundum derivatives with Sn-induced polarization and above room temperature antiferromagnetic ordering.

Structural Diversity of Rare-Earth Oxychalcogenides (2022)
Journal Article
Orr, M., Hebberd, G. R., McCabe, E. E., & Macaluso, R. T. (2022). Structural Diversity of Rare-Earth Oxychalcogenides. ACS Omega, 7(10), 8209-8218. https://doi.org/10.1021/acsomega.2c00186

Mixed-anion systems have garnered much attention in the past decade with attractive properties for diverse applications such as energy conversion, electronics, and catalysis. The discovery of new materials through mixed-cation and single-anion system... Read More about Structural Diversity of Rare-Earth Oxychalcogenides.

Disorder-Induced Structural Complexity in the Barlowite Family of S = 1/2 Kagomé Magnets (2021)
Journal Article
Tustain, K., McCabe, E. E., Arevalo-Lopez, A. M., Gibbs, A. S., Thompson, S. P., Murray, C. A., …Clark, L. (2021). Disorder-Induced Structural Complexity in the Barlowite Family of S = 1/2 Kagomé Magnets. Chemistry of Materials, 33(24), 9638-9651. https://doi.org/10.1021/acs.chemmater.1c03247

We present a comprehensive structural and magnetic characterization of the barlowite family of S = 1/2 kagomé magnets, Cu4(OH)6FX, where X = Cl, Br, or I. Through high-resolution synchrotron X-ray and neutron powder diffraction measurements, we revea... Read More about Disorder-Induced Structural Complexity in the Barlowite Family of S = 1/2 Kagomé Magnets.

Symmetry and the Role of the Anion Sublattice in Aurivillius Oxyfluoride Bi2TiO4F2 (2021)
Journal Article
Giddings, A. T., Scott, E. A., Stennett, M. C., Apperley, D. C., Greaves, C., Hyatt, N. C., & McCabe, E. E. (2021). Symmetry and the Role of the Anion Sublattice in Aurivillius Oxyfluoride Bi2TiO4F2. Inorganic Chemistry, 60(18), 14105-14115. https://doi.org/10.1021/acs.inorgchem.1c01933

The photocatalytic and dielectric behaviors of Aurivillius oxyfluorides such as Bi2TiO4F2 depend sensitively on their crystal structure and symmetry but these are not fully understood. Our experimental work combined with symmetry analysis demonstrate... Read More about Symmetry and the Role of the Anion Sublattice in Aurivillius Oxyfluoride Bi2TiO4F2.

Antiferromagnetic order breaks inversion symmetry in metallic double perovskite, Pb2NiOsO6 (2021)
Journal Article
Feng, H., Kang, C., Manuel, P., Orlandi, F., Su, Y., Chen, J., …Greenblatt, M. (2021). Antiferromagnetic order breaks inversion symmetry in metallic double perovskite, Pb2NiOsO6. Chemistry of Materials, 33(11), 4188-4195. https://doi.org/10.1021/acs.chemmater.1c01032

A Polycrystalline sample of Pb2NiOsO6 was synthesized by high-pressure (6 GPa) and high-temperature (1575 K) conditions. Pb2NiOsO6 crystallizes in a monoclinic double perovskite structure with a centrosymmetric space group P21/n at room temperature.... Read More about Antiferromagnetic order breaks inversion symmetry in metallic double perovskite, Pb2NiOsO6.

Machine learning approach to muon spectroscopy analysis (2021)
Journal Article
Tula, T., Möller, G., Quintanilla, J., Giblin, S., Hillier, A., McCabe, E., …Gibson, S. (2021). Machine learning approach to muon spectroscopy analysis. Journal of Physics: Condensed Matter, 33(19), Article 194002. https://doi.org/10.1088/1361-648x/abe39e

In recent years, articial intelligence techniques have proved to be very successful when applied to problems in physical sciences. Here we apply an unsupervised machine learning (ML) algorithm called principal component analysis (PCA) as a tool to an... Read More about Machine learning approach to muon spectroscopy analysis.

Tuning between Proper and Hybrid-Improper Mechanisms for Polar Behavior in CsLn2Ti2NbO10 Dion-Jacobson Phases (2020)
Journal Article
Cascos, V. A., Roberts-Watts, J., Skingle, C., Levin, I., Zhang, W., Halasyamani, P. S., …McCabe, E. E. (2020). Tuning between Proper and Hybrid-Improper Mechanisms for Polar Behavior in CsLn2Ti2NbO10 Dion-Jacobson Phases. Chemistry of Materials, 32(19), 8700-8712. https://doi.org/10.1021/acs.chemmater.0c03326

The Dion-Jacobson (DJ) family of perovskite-related materials have recently attracted interest due to their polar structures and properties, resulting from hybrid-improper mechanisms for ferroelectricity in n = 2 systems and from proper mechanisms in... Read More about Tuning between Proper and Hybrid-Improper Mechanisms for Polar Behavior in CsLn2Ti2NbO10 Dion-Jacobson Phases.