Magnetic diphase nanostructure of ZnFe2O4/γ-Fe2O3
- 1. State Key Structural Chemistry Laboratory and Fujian Institute of Research on the Structure of Matter, Graduate School of Chinese Academy of Sciences, Fuzhou 350002 (China)
- 2. Department of Physics, Jilin University, Changchun 130023 (China)
Description
Magnetic diphase nanostructures of ZnFe2O4/γ-Fe2O3 were synthesized by a solvothermal method. The formation reactions were optimized by tuning the initial molar ratios of Fe/Zn. All samples were characterized by X-ray diffraction, thermogravimetric analysis, infrared spectroscopy, and Raman spectra. It is found that when the initial molar ratio of Fe/Zn is larger than 2, a diphase magnetic nanostructure of ZnFe2O4/γ-Fe2O3 was formed, in which the presence of ZnFe2O4 enhanced the thermal stability of γ-Fe2O3. Further increasing the initial molar ratio of Fe/Zn larger than 6 destabilized the diphase nanostructure and yielded traces of secondary phase α-Fe2O3. The grain surfaces of diphase nanostructure exhibited a spin-glass-like structure. At room temperature, all diphase nanostructures are superparamagnetic with saturation magnetization being increased with γ-Fe2O3 content. - Graphical abstract: Spherical diphase nanostructure of ZnFe2O4/γ-Fe2O3 was obtained by varying the initial molar ratio of Fe/Zn
Additional details
Identifiers
- DOI
- 10.1016/j.jssc.2006.12.034;
- PII
- S0022-4596(07)00014-X;
Publishing Information
- Journal Title
- Journal of Solid State Chemistry
- Journal Volume
- 180
- Journal Issue
- 3
- Journal Page Range
- p. 1038-1044
- ISSN
- 0022-4596
- CODEN
- JSSCBI
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39037959
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; INFRARED SPECTRA; IRON OXIDES; MAGNETIZATION; NANOSTRUCTURES; RAMAN SPECTRA; SPIN GLASS STATE; SUPERPARAMAGNETISM; TEMPERATURE RANGE 0273-0400 K; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION; ZINC COMPOUNDS
- Descriptors DEC
- CHALCOGENIDES; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIFFRACTION; GRAVIMETRIC ANALYSIS; IRON COMPOUNDS; MAGNETISM; OXIDES; OXYGEN COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; SCATTERING; SPECTRA; SPECTROSCOPY; TEMPERATURE RANGE; THERMAL ANALYSIS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.