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Optical properties of ferroic Fe2O(SeO3)2 and Fe2(SeO3)3·3H2O.
Yang, Shuai; Yu, Bing; Ge, Rui; Liu, Beituo; Qi, Ruijuan; Sun, Lin; Zhao, Qingbiao; Yue, Fangyu.
Afiliación
  • Yang S; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
  • Yu B; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
  • Ge R; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
  • Liu B; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
  • Qi R; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
  • Sun L; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
  • Zhao Q; School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China. 23031701@wit.edu.cn.
  • Yue F; Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China. fyyue@ee.ecnu.edu.cn.
Phys Chem Chem Phys ; 26(4): 3335-3341, 2024 Jan 24.
Article en En | MEDLINE | ID: mdl-38197880
ABSTRACT
Ferroic compounds Fe2O(SeO3)2 (FSO) and Fe2(SeO3)3·3H2O (FSOH) prepared by the hydrothermal method are characterized and their optical properties are investigated by combining with first-principles calculations. The results show that (i) FSO is antiferromagnetic below ∼110 K and becomes ferromagnetic at elevated temperatures, while FSOH is antiferromagnetic at low temperatures probably due to a change in the spin state from Fe3+ (S = 5/2) to Fe2+ (S = 2); (ii) the optical bandgap is determined to be ∼2.83 eV for FSO and ∼2.15 eV for FSOH, consistent with the theoretical calculation; and (iii) the angle-resolved polarized Raman spectroscopy results of both crystals demonstrate the strong anisotropic light absorption and birefringence effects, and the unconventional symmetricity of some Raman modes is observed, which can be interpreted from the variation of Raman scattering elements. This work can provide not only an understanding of the structure and physical properties of iron selenites, but also a strategy for exploring the anomalous Raman behaviors in anisotropic crystals, facilitating the design and engineering of novel functional devices with low-symmetry ferroic materials.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido