Journal Article

PUBDB-2026-01858

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Novel combustion synthesis and spectroscopic investigation of $YInO_3:Cr^{3+}$ polymorphs

Bucur, R. A. ; Bucur, A. I. ; Ivanovici, M. ; Racu, A. V. (Corresponding author) ; Buryi, M. ; Brik, M. G. (Corresponding author) ; Smortsova, Y.DESY* ; Vanags, E. ; Kotomin, E. A. ; Pankratovs, V. (Corresponding author)Extern*

2026
Royal Society of Chemistry Cambridge

This record in other databases:  

Please use a persistent id in citations: doi:10.1039/D6MA00420B

Abstract: Identifying synthesis pathways for stabilizing metastable phases of materials and understanding the relationship between optical properties and local symmetry are important for advancing optical materials. In this work, we report a novel combustion synthesis route for two polymorphic structures of Cr3+-doped YInO3 perovskite, namely the hexagonal and cubic (C-type) phases, along with their structural and optical properties. The use of tryptophan enabled the stabilization of the less explored metastable C-type YInO3 compound. The structural differences between the polymorphs were identified using X-ray diffraction. Raman spectroscopy confirmed the hexagonal phase through characteristic vibrational bands with peaks at 379 and 611 cm−1, while the predominant band in the C-type phase appears at 386 cm−1. Scanning electron microscopy analysis revealed that the cubic YInO3 polymorph exhibits a smaller grain size compared with the hexagonal phase. Due to the limited crystallographic data available for the cubic phase, its structure was refined using HighScore software, and the corresponding local symmetry parameters were analyzed. Novel excitation and photoluminescence data for YInO3:Cr3+ were obtained in near-infrared (NIR) spectral regions. The Cr3+ NIR emission observed at 921 nm in the hexagonal phase is blue-shifted relative to the cubic phase, where the emission maximum occurs at 938 nm. This difference of 17 nm could be correlated with structural difference in local symmetry, such as polyhedral volume ΔCub-Hex 4.1926–5.1527 Å3. Supplementary visible absorption/excitation, emission, and theoretical calculations of Cr3+ energy levels, particularly for the hexagonal phase, were done, and excitation/emission mapping under VUV to elucidate the contribution of potential defects is discussed.

---

Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20250639 EC (I-20250639-EC) (I-20250639-EC)

Experiment(s):

1. PETRA Beamline P66 (PETRA III)

Appears in the scientific report 2026

---

Database coverage:
; ; Article Processing Charges ; Clarivate Analytics Master Journal List ; DOAJ Seal ; Emerging Sources Citation Index ; Fees ; IF >= 5 ; JCR ; SCOPUS ; Web of Science Core Collection

---