journal article·2025Open access

Structure–property coupling in lead-free halides Rb 3 Sb 2 Br 9 and Rb 3 Sb 2 Br 6 I 3 obtained by mechanochemistry

Yousra Chakroun, Wajdi Cherif, Brenda Martinelli, Carlos A. López, Javier Gainza, Romualdo S. Silva Jr., Federico Serrano-Sánchez, Mateus M. Ferrer, C. Pecharromán, João Elias F. S. Rodrigues, José A. Alonso

Journal of Materials Chemistry C· Volume 13· Issue 48

Abstract

Rb 3 Sb 2 X 9 (X = Br, I) halides show a temperature-driven phase transition from monoclinic ( P 2 1 / n ) to trigonal ( P 3̄ m 1). Distortion-mode analysis reveals octahedral rotations as primary drivers, with cation shifts and bond modulations stabilizing the low-symmetry phase.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Inorganic Chemistry and Materials · Solid-state spectroscopy and crystallography

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain

Laboratory Inorganic Chemistry, Faculty of Sciences of Sfax, University of Sfax, 3000 Sfax, Tunisia

National Engineering School of Sfax (ENIS), Laboratory of Electromechanical Systems (LASEM), B.P.W., 3038, Sfax, Tunisia

CCAF, PPGCEM/CDTec, Federal University of Pelotas, 96010-610 Pelotas, Rio Grande do Sul, Brazil

Instituto de Investigaciones en Tecnología Química (UNSL-CONICET) and Facultad de Química, Bioquímica y Farmacia, Almirante Brown 1455 (5700), San Luis, Argentina

ESRF – European Synchrotron Radiation Facility, 38000 Grenoble, France

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