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.
Authors
- Damian Włodarczyk,
- Mikolaj Amilusik,
- Katarzyna M. Kosyl,
- Maciej Chrunik,
- Krystyna Ławniczak-Jabłońska,
- Hanka Przybylińska,
- dr inż. Paulina Kosmela link open in new tab ,
- dr hab. inż. Michał Strankowski link open in new tab ,
- Lev-Ivan Bulyk,
- Volodymyr Tsiumra,
- Rajibul Islam,
- Carmine Autieri,
- Fei Xue,
- dr inż, Marcin Zając,
- Anastasiia Lysak,
- Roman Minikayev,
- Michal Bockowski,
- Andrzej Suchocki
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1021/acs.inorgchem.4c00567
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2024
