Synthesis, Characterization, and Magnetic Properties of A(2)Co(2)Fe(VO4)(3) (A = Ag or Na) Alluaudite-Type Vanadates - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Superconductivity and Novel Magnetism Année : 2019

Synthesis, Characterization, and Magnetic Properties of A(2)Co(2)Fe(VO4)(3) (A = Ag or Na) Alluaudite-Type Vanadates

(1) , (2) , (3) , (1) , (1) , (4) , (2)
1
2
3
4

Résumé

We successfully synthesized the polycrystalline form of vanadates A(2)Co(2)Fe(VO4)(3) (A = Ag or Na) using sol-gel method. Powder X-ray diffraction analysis allowed the identification of the alluaudite-type vanadate structure. The morphology and the elemental composition of the synthesized powders were analyzed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometer (EDS). The two vanadates A(2)Co(2)Fe(VO4)(3) (A = Ag or Na) were further characterized by infrared and Raman spectroscopies to get complementary structural information. The infrared and Raman spectroscopy-observed bands were assigned to VO43- vibration modes. The room temperature Fe-57 Mossbauer spectroscopy confirmed the +III oxidation state of iron. Magnetic properties of these vanadates were investigated. The magnetic susceptibility data reveal that the predominant interactions in these vanadates are antiferromagnetic with a Curie-Weiss constant of theta=-125.6K for Na2Co2Fe(VO4)(3) and theta=-104.5K for Ag2Co2Fe(VO4)(3). The magnetic interactions in these vanadates were discussed according to semiempirical Goodenough-Kanamori-Anderson rules (GKA).
Fichier non déposé

Dates et versions

hal-03627567 , version 1 (01-04-2022)

Identifiants

Citer

Mohammed Hadouchi, Abderrazzak Assani, Mohamed Saadi, Abdelilah Lahmar, Mimoun El Marssi, et al.. Synthesis, Characterization, and Magnetic Properties of A(2)Co(2)Fe(VO4)(3) (A = Ag or Na) Alluaudite-Type Vanadates. Journal of Superconductivity and Novel Magnetism, 2019, 32 (8), pp.2437-2446. ⟨10.1007/s10948-018-4964-5⟩. ⟨hal-03627567⟩
4 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More