Influence of calcination rate on morphologies and magnetic properties of MnFe2O4 nanofibers. Issue 16 (December 2016)

• Record Type: Journal Article
• Authors: Kurtan, U.; Dursun, D.; Aydın, H.; Toprak, M.S.; Baykal, A.; Bozkurt, A.
• Is Part Of: Ceramics international. Volume 42:Issue 16(2016)
• Page Start: 18189
• Page End: 18195
• Publication Date: 2016-12
• Subjects: Electrospinning -- MnFe2O4 nanofibers -- Magnetization -- TEM; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.08.135
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In the present study, we succesfully synthesized electrospun MnFe2 O4 nanofibers (NFs) from poly(N-vinylpyrrolidone)/manganese(II) nitrate composite by electrospinning and then as-spun NFs were calcined 450 °C for 2 h in air atmosphere to remove the polymer matrix and fabricate inorganic MnFe2 O4 nanofibers. In order to investigate the sintering behavior of MnFe2 O4 nanofibers in air atmosphere, the synthesized as-spun nanofibers were calcined with different calcination rates. Thus the effect of calcination rate on structure and morphology of nanofibers were discussed clearly. The structural, magnetic, morphological, spectroscopic and thermal characterizations were also done by XRD, VSM, TEM, SEM, FTIR and TG analysis. In the presence of slow calcination rate, only peaks of MnFe2 O4 could be observed on other hand in the presence of rapid calcination rate, formation of an impurity was observed. Scanning electron microscope images revealed that MnFe2 O4 nanorods possess a broader range size distribution with higher particle size. Also, magnetic properties were both size and shape dependent.