An efficient material search for room-temperature topological magnons

MJ Karaki, X Yang, AJ Williams, M Nawwar… - Science …, 2023‏ - science.org
Topologically protected magnon surface states are highly desirable as an ideal platform to
engineer low-dissipation spintronics devices. However, theoretical prediction of topological …

Unleashing the potential of coupled substituted 3D niobate perovskite oxides in cocatalyst-free photocatalytic hydrogen evolution

P Dahiya, M Goyal, S Kumar… - ACS Applied Energy …, 2024‏ - ACS Publications
Many 3D titanate and niobate perovskites are useful photocatalysts for hydrogen evolution
but are active only under UV-light. Various strategies, including the use of noble metal …

Intermediate-spin state of Co ions in magnetic and thermoelectric properties of double perovskite Ba2CoNbO6

DV Popov, RG Batulin, MA Cherosov, IV Yatsyk… - Journal of Alloys and …, 2024‏ - Elsevier
Abstract Double perovskite Ba 2 CoNbO 6, obtained by pyrolysis of nitrate-organic mixtures,
was studied by XRD, XRF, DFT, AC/DC-magnetization, specific-heat, thermoelectric, and …

Room-Temperature Mixed Spin State of Co3+ in Sr2Co0.02Ga0.98NbO6 Double Perovskites: Combined NMR and EPR Studies in a Potential Inorganic Pigment

M Varghese, S Simpson, G Lawrence… - The Journal of …, 2022‏ - ACS Publications
The structural and optical properties of the refractory oxides Sr2Co x Ga1–x NbO6 (x= 0 and
0.02) were investigated using powder X-ray diffraction; 93Nb, 71Ga, and 59Co magic-angle …

Enhanced photocatalytic hydrogen evolution from cation modified single perovskite niobates in the absence of noble metal cocatalysts

P Dahiya, TK Mandal - New Journal of Chemistry, 2024‏ - pubs.rsc.org
Meeting the growing demand for robust, earth-abundant and noble-metal-free
photocatalysts for practical hydrogen-evolution reaction systems is crucial. Herein, cation …

Optical and magnetic characterisation of Co3+ and Ni3+ in LaAlO3: interplay between the spin state and Jahn–Teller effect

MN Sanz-Ortiz, F Rodriguez, J Rodriguez… - Journal of Physics …, 2011‏ - iopscience.iop.org
The coordination, the electronic structures and the spin of the ground state of Ni 3+(3d 7)
and Co 3+(3d 6) introduced as impurities in LaAlO 3 are investigated through optical …

Optical absorption and Raman spectroscopy of CuWO4

J Ruiz-Fuertes, MN Sanz-Ortiz… - Journal of Physics …, 2010‏ - iopscience.iop.org
The electronic absorption and Raman spectra of CuWO 4 are studied as a function of
pressure in the 0–20 GPa range. The below-gap absorption bands at 1.15, 1.38 and 1.56 eV …

Photoluminescence properties of Jahn–Teller transition-metal ions

MN Sanz-Ortiz, F Rodríguez - The Journal of chemical physics, 2009‏ - pubs.aip.org
This work investigates the influence of electron-phonon coupling associated with E⊗ e and
T⊗ e Jahn–Teller (JT) effect in different transition-metal (TM) ions on de-excitation …

Characterization and application of the hetero-system LaCoO3/ZnO for degradation of Orange II under solar light

A Ouatizerga, G Rekhila, S Mirad, M Trari - Chemical Papers, 2023‏ - Springer
LaCoO3 elaborated by nitrate route was characterized physically and electrochemically to
be applied in the Orange II (OII) oxidation upon solar light. The X-ray diffraction (XRD), SEM …

[PDF][PDF] Characterization and application of the hetero‑system LaCoO

A Ouatizerga, G Rekhila, S Mirad, M Trari - 2023‏ - researchgate.net
LaCoO3 elaborated by nitrate route was characterized physically and electrochemically to
be applied in the Orange II (OII) oxidation upon solar light. The X-ray diffraction (XRD), SEM …