دورية أكاديمية
أعرض في EDS

Screening of Mono-, Di- and Trivalent Cationic Dopants for the Enhancement of Thermal Behavior, Kinetics, Structural, Morphological, Surface and Magnetic Properties of CoFe 2 O 4 -SiO 2 Nanocomposites.

التفاصيل البيبلوغرافية
العنوان: Screening of Mono-, Di- and Trivalent Cationic Dopants for the Enhancement of Thermal Behavior, Kinetics, Structural, Morphological, Surface and Magnetic Properties of CoFe 2 O 4 -SiO 2 Nanocomposites.
المؤلفون: Dippong T; Faculty of Science, Technical University of Cluj-Napoca, 76 Victoriei Street, 430122 Baia Mare, Romania., Levei EA; INCDO-INOE 2000, Research Institute for Analytical Instrumentation, 67 Donath Street, 400293 Cluj-Napoca, Romania., Petean I; Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 11 Arany Janos Street, 400084 Cluj-Napoca, Romania., Deac IG; Faculty of Physics, Babes-Bolyai University, 1 Kogalniceanu Street, 400084 Cluj-Napoca, Romania., Mereu RA; Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 11 Arany Janos Street, 400084 Cluj-Napoca, Romania., Cadar O; INCDO-INOE 2000, Research Institute for Analytical Instrumentation, 67 Donath Street, 400293 Cluj-Napoca, Romania.
المصدر: International journal of molecular sciences [Int J Mol Sci] 2023 Jun 02; Vol. 24 (11). Date of Electronic Publication: 2023 Jun 02.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101092791 Publication Model: Electronic Cited Medium: Internet ISSN: 1422-0067 (Electronic) Linking ISSN: 14220067 NLM ISO Abbreviation: Int J Mol Sci Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Basel, Switzerland : MDPI, [2000-
مواضيع طبية MeSH: Silicon Dioxide*/chemistry , Nanocomposites*, Kinetics ; Magnetic Phenomena ; Cations
مستخلص: CoFe 2 O 4 is a promising functional material for various applications. The impact of doping with different cations (Ag + , Na + , Ca 2+ , Cd 2+ , and La 3+ ) on the structural, thermal, kinetics, morphological, surface, and magnetic properties of CoFe 2 O 4 nanoparticles synthesized via the sol-gel method and calcined at 400, 700 and 1000 °C is investigated. The thermal behavior of reactants during the synthesis process reveals the formation of metallic succinates up to 200 °C and their decomposition into metal oxides that further react and form the ferrites. The rate constant of succinates' decomposition into ferrites calculated using the isotherms at 150, 200, 250, and 300 °C decrease with increasing temperature and depend on the doping cation. By calcination at low temperatures, single-phase ferrites with low crystallinity were observed, while at 1000 °C, the well-crystallized ferrites were accompanied by crystalline phases of the silica matrix (cristobalite and quartz). The atomic force microscopy images reveal spherical ferrite particles covered by an amorphous phase, the particle size, powder surface area, and coating thickness contingent on the doping ion and calcination temperature. The structural parameters estimated via X-ray diffraction (crystallite size, relative crystallinity, lattice parameter, unit cell volume, hopping length, density) and the magnetic parameters (saturation magnetization, remanent magnetization, magnetic moment per formula unit, coercivity, and anisotropy constant) depend on the doping ion and calcination temperature.
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فهرسة مساهمة: Keywords: calcination; cobalt ferrite; doping; magnetic behavior; silica matrix
المشرفين على المادة: 7631-86-9 (Silicon Dioxide)
0 (Cations)
تواريخ الأحداث: Date Created: 20230610 Date Completed: 20230612 Latest Revision: 20230612
رمز التحديث: 20230612
مُعرف محوري في PubMed: PMC10253878
DOI: 10.3390/ijms24119703
PMID: 37298654
قاعدة البيانات: MEDLINE
الوصف
تدمد:1422-0067
DOI:10.3390/ijms24119703