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The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder

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2016
4007.pdf (3.894Mb)
Authors
Kosanović, Darko
Obradović, N.
Pavlović, Vera P.
Marković, S.
Maricić, A.
Rasić, G.
Vlahović, Branislav
Pavlović, Vladimir
Ristić, M.M.
Article (Published version)
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Abstract
Crystal structure and morphology of mechanically activated nanocrystalline Fe/BaTiO3 was investigated using a combination of spectroscopic and microscopic methods. These show that mechanical activation led to the creation of new surfaces and the comminution of the initial powder particles. Prolonged milling resulted in formation of larger agglomerates of BaTiO3 and bimodal particle size distribution, where BaTiO3 particles were significantly larger than those of iron-containing phases. Milling times of 210 min and above lead to a significant decrease in temperature of the oxidation of iron in the sample, indicating abrupt change in reactivity. Raman spectroscopy analysis has revealed that activation had a pronounced influence on Fe/BaTiO3 lattice, thereby affecting both the stability of the crystal structure and the phase transition phenomena.
Keywords:
Mechanical alloying and milling / Microstructure / Scanning electron microscopy / Raman spectroscopy / Multiferroic
Source:
Materials Science and Engineering B-Advanced Functional Solid-State Materials, 2016, 212, 89-95
Publisher:
  • Elsevier, Amsterdam
Funding / projects:
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • Serbian Academy of Sciences and Arts [F/198]
  • NSFNational Science Foundation (NSF) [HRD-0833184]
  • NASANational Aeronautics & Space Administration (NASA) [NNX09AV07A]
  • NSF-PREMNational Science Foundation (NSF)NSF - Directorate for Mathematical & Physical Sciences (MPS) [1523617]

DOI: 10.1016/j.mseb.2016.07.016

ISSN: 0921-5107

WoS: 000383823800010

Scopus: 2-s2.0-84981187942
[ Google Scholar ]
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/4010
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  • Radovi istraživača / Researchers’ publications
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Poljoprivredni fakultet

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